<!-- doc/src/sgml/release-13.sgml -->
<!-- See header comment in release.sgml about typical markup -->

 <sect1 id="release-13-23">
  <title>Release 13.23</title>

  <formalpara>
  <title>Release date:</title>
  <para>2025-11-13</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.22.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <para>
   This is expected to be the last <productname>PostgreSQL</productname>
   release in the 13.X series.  Users are encouraged to update to a newer
   release branch soon.
  </para>

  <sect2>
   <title>Migration to Version 13.23</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you are upgrading from a version earlier than 13.21,
    see <xref linkend="release-13-21"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Nathan Bossart <nathan@postgresql.org>
Branch: master [5e4fcbe53] 2025-11-10 09:00:00 -0600
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     <para>
      Check for <literal>CREATE</literal> privileges on the schema
      in <command>CREATE STATISTICS</command> (Jelte Fennema-Nio)
      <ulink url="&commit_baseurl;8a2530ebc">&sect;</ulink>
     </para>

     <para>
      This omission allowed table owners to create statistics in any
      schema, potentially leading to unexpected naming conflicts.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Jelte Fennema-Nio for reporting this problem.
      (CVE-2025-12817)
     </para>
    </listitem>

    <listitem>
<!--
Author: Jacob Champion <jchampion@postgresql.org>
Branch: master [600086f47] 2025-11-10 06:20:33 -0800
Branch: REL_18_STABLE [7eb8fcad8] 2025-11-10 06:03:01 -0800
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-->
     <para>
      Avoid integer overflow in allocation-size calculations
      within <application>libpq</application> (Jacob Champion)
      <ulink url="&commit_baseurl;d6f0c0d6d">&sect;</ulink>
     </para>

     <para>
      Several places in <application>libpq</application> were not
      sufficiently careful about computing the required size of a memory
      allocation.  Sufficiently large inputs could cause integer overflow,
      resulting in an undersized buffer, which would then lead to writing
      past the end of the buffer.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks Aleksey
      Solovev of Positive Technologies for reporting this problem.
      (CVE-2025-12818)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [cdf7feb96] 2025-09-13 16:55:51 -0400
Branch: REL_18_STABLE Release: REL_18_0 [802308693] 2025-09-13 16:55:51 -0400
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Branch: REL_13_STABLE [308773617] 2025-09-13 16:55:51 -0400
-->
     <para>
      Further fix processing of character classes within <literal>SIMILAR
      TO</literal> regular expressions (Laurenz Albe)
      <ulink url="&commit_baseurl;308773617">&sect;</ulink>
     </para>

     <para>
      The previous fix for translating <literal>SIMILAR TO</literal>
      pattern matching expressions to POSIX-style regular expressions
      broke a corner case that formerly worked: if there is an escape
      character right after the opening bracket and then a closing bracket
      right after the escape sequence (for
      example <literal>[\w]</literal>), the closing bracket was no longer
      seen as terminating the character class.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [b0cc0a71e] 2025-09-17 16:32:57 -0400
Branch: REL_18_STABLE Release: REL_18_0 [4eab45649] 2025-09-17 16:32:57 -0400
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-->
     <para>
      Fix parsing of aggregate functions whose arguments contain a
      sub-select with a <literal>FROM</literal> reference to a CTE outside
      the aggregate function (Tom Lane)
      <ulink url="&commit_baseurl;b649ef244">&sect;</ulink>
     </para>

     <para>
      Such a CTE reference must act like a outer-level column reference
      when determining the aggregate's semantic level; but it was not
      being accounted for, leading to obscure planner or executor errors.
     </para>
    </listitem>

    <listitem>
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Author: Richard Guo <rguo@postgresql.org>
Branch: master [aba8f61c3] 2025-09-03 16:00:38 +0900
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     <para>
      Fix <quote>no relation entry for relid</quote> errors in corner
      cases while estimating SubPlan costs (Richard Guo)
      <ulink url="&commit_baseurl;8c02d92c6">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
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Author: Peter Geoghegan <pg@bowt.ie>
Branch: master [843e50208] 2025-10-10 14:52:25 -0400
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     <para>
      Remove faulty assertion in btree index cleanup (Peter Geoghegan)
      <ulink url="&commit_baseurl;af302ff6b">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [327b7324d] 2025-08-26 12:08:57 -0400
Branch: REL_18_STABLE Release: REL_18_0 [3a7a3eaaf] 2025-08-26 12:08:57 -0400
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     <para>
      Fix possible infinite loop in GIN index scans with multiple scan
      conditions (Tom Lane)
      <ulink url="&commit_baseurl;3e0f5f00b">&sect;</ulink>
     </para>

     <para>
      GIN can handle scan conditions that can reject non-matching entries
      but are not useful for searching for relevant entries, for example
      a <type>tsquery</type> clause like <literal>!term</literal>.  But
      such a condition must not be first in the array of scan conditions.
      The code failed to ensure that in all cases, with the result that a
      query having a mix of such conditions with normal conditions might
      work or not depending on the order in which the conditions were
      given in the query.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [b55068236] 2025-08-26 11:38:41 -0400
Branch: REL_18_STABLE Release: REL_18_0 [44c2e5b76] 2025-08-26 11:38:41 -0400
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Branch: REL_13_STABLE [b2d71c455] 2025-08-26 11:38:41 -0400
-->
     <para>
      Ensure that GIN index scans can be canceled (Tom Lane)
      <ulink url="&commit_baseurl;b2d71c455">&sect;</ulink>
     </para>

     <para>
      Some code paths were capable of running for a long time without
      checking for interrupts.
     </para>
    </listitem>

    <listitem>
<!--
Author: Álvaro Herrera <alvherre@kurilemu.de>
Branch: master [a95e3d84c] 2025-11-04 13:23:26 +0100
Branch: REL_18_STABLE [419ffde23] 2025-11-04 13:23:26 +0100
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Branch: REL_13_STABLE [3c7b47974] 2025-11-04 13:23:26 +0100
Branch: master [0a3d27bfe] 2025-11-04 20:31:43 +0100
Branch: REL_18_STABLE [8733f0b54] 2025-11-04 20:31:43 +0100
Branch: REL_17_STABLE [3b5007347] 2025-11-04 20:31:43 +0100
Branch: REL_16_STABLE [20442cf50] 2025-11-04 20:31:43 +0100
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     <para>
      Ensure that BRIN autosummarization provides a snapshot for index
      expressions that need one (Álvaro Herrera)
      <ulink url="&commit_baseurl;3c7b47974">&sect;</ulink>
      <ulink url="&commit_baseurl;ef81697fe">&sect;</ulink>
     </para>

     <para>
      Previously, autosummarization would fail for such indexes, and then
      leave placeholder index tuples behind, causing the index to bloat
      over time.
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [9fd29d7ff] 2025-10-21 20:46:14 +1300
Branch: REL_18_STABLE [715983a81] 2025-10-21 20:46:49 +1300
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-->
     <para>
      Fix integer-overflow hazard in BRIN index scans when the table
      contains close to 2<superscript>32</superscript> pages (Sunil S)
      <ulink url="&commit_baseurl;c28f8ca29">&sect;</ulink>
     </para>

     <para>
      This oversight could result in an infinite loop or scanning of
      unneeded table pages.
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [6911f8037] 2025-10-23 13:11:02 +1300
Branch: REL_18_STABLE [ceb51d09b] 2025-10-23 13:12:03 +1300
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     <para>
      Fix incorrect zero-extension of stored values in JIT-generated tuple
      deforming code (David Rowley)
      <ulink url="&commit_baseurl;4afab175b">&sect;</ulink>
     </para>

     <para>
      When not using JIT, the equivalent code does sign-extension not
      zero-extension, leading to a different Datum representation of small
      integer data types.  This inconsistency was masked in most cases,
      but it is known to lead to <quote>could not find memoization table
      entry</quote> errors when using Memoize plan nodes, and there might
      be other symptoms.
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [ac06ea8f7] 2025-09-17 12:19:15 +1200
Branch: REL_18_STABLE Release: REL_18_0 [78e6047dc] 2025-09-17 12:19:51 +1200
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Branch: REL_18_STABLE Release: REL_18_0 [bae6c74ba] 2025-09-17 11:49:26 +1200
Branch: REL_17_STABLE [3d939a9b1] 2025-09-17 11:49:49 +1200
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-->
     <para>
      Add missing EvalPlanQual rechecks for TID Scan and TID Range Scan
      plan nodes (Sophie Alpert, David Rowley)
      <ulink url="&commit_baseurl;940f3cd5d">&sect;</ulink>
     </para>

     <para>
      This omission led to possibly not rechecking a condition
      on <structfield>ctid</structfield> during concurrent-update
      situations, causing the update's behavior to vary depending on which
      plan type had been selected.
     </para>
    </listitem>

    <listitem>
<!--
Author: Etsuro Fujita <efujita@postgresql.org>
Branch: master [12609fbac] 2025-10-15 17:15:00 +0900
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     <para>
      Fix EvalPlanQual handling of foreign or custom joins that do not
      have an alternative local-join plan prepared for EPQ (Masahiko
      Sawada, Etsuro Fujita)
      <ulink url="&commit_baseurl;12b0c0e51">&sect;</ulink>
     </para>

     <para>
      In such cases the foreign or custom access method should be invoked
      normally, but that did not happen, typically leading to a crash.
     </para>
    </listitem>

    <listitem>
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Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [040cc5f3c] 2025-11-04 14:46:58 +0100
Branch: REL_18_STABLE [ba99c9491] 2025-11-04 14:47:15 +0100
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     <para>
      Disallow generated columns in partition keys
      (Jian He, Ashutosh Bapat)
      <ulink url="&commit_baseurl;7f239c72a">&sect;</ulink>
     </para>

     <para>
      This was already not allowed, but the check missed some cases, such
      as where the column reference is implicit in a whole-row reference.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [aa606b931] 2025-11-06 13:54:42 +0100
Branch: REL_18_STABLE [0f9e0068b] 2025-11-06 13:55:08 +0100
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     <para>
      Disallow generated columns in <literal>COPY ... FROM
      ... WHERE</literal> clauses (Peter Eisentraut, Jian He)
      <ulink url="&commit_baseurl;3717849e6">&sect;</ulink>
     </para>

     <para>
      Previously, incorrect behavior or an obscure error message resulted
      from attempting to reference such a column, since generated columns
      have not yet been computed at the point
      where <literal>WHERE</literal> filtering is done.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [a95393ecd] 2025-09-29 11:15:44 -0700
Branch: REL_18_STABLE [d024160ff] 2025-09-29 11:15:47 -0700
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     <para>
      Fix visibility checking for statistics objects
      in <literal>pg_temp</literal> (Noah Misch)
      <ulink url="&commit_baseurl;afb2cce74">&sect;</ulink>
     </para>

     <para>
      A statistics object located in a temporary schema cannot be named
      without schema qualification,
      but <function>pg_statistics_obj_is_visible()</function> missed that
      memo and could return <quote>true</quote> regardless.  In turn,
      functions such as <function>pg_describe_object()</function> could
      fail to schema-qualify the object's name as expected.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [abdeacdb0] 2025-09-10 16:05:03 -0400
Branch: REL_18_STABLE Release: REL_18_0 [bc865ff6d] 2025-09-10 16:05:03 -0400
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-->
     <para>
      Fix memory leakage in hashed subplans (Haiyang Li)
      <ulink url="&commit_baseurl;8b6c29afd">&sect;</ulink>
     </para>

     <para>
      Any memory consumed by the hash functions used for hashing tuples
      constituted a query-lifespan memory leak.  One way that could happen
      is if the values being hashed require de-toasting.
     </para>
    </listitem>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [fc6600fc1] 2025-09-04 11:45:44 +0100
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-->
     <para>
      Add missing replica identity checks in <command>MERGE</command> and
      <command>INSERT ... ON CONFLICT DO UPDATE</command>
      (Zhijie Hou)
      <ulink url="&commit_baseurl;0610b843c">&sect;</ulink>
      <ulink url="&commit_baseurl;dbef9cbaa">&sect;</ulink>
     </para>

     <para>
      If <command>MERGE</command> may require update or delete actions,
      and the target table publishes updates or deletes, insist that it
      have a <literal>REPLICA IDENTITY</literal> defined.  Failing to
      require this can silently break replication.
      Likewise, <command>INSERT</command> with
      an <literal>UPDATE</literal> option must require <literal>REPLICA
      IDENTITY</literal> if the target table publishes either inserts or
      updates.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [aa21e4922] 2025-08-19 05:33:17 +0000
Branch: REL_18_STABLE Release: REL_18_0 [a5d4c0415] 2025-08-19 05:18:24 +0000
Branch: REL_17_STABLE [288a817bc] 2025-08-19 05:06:37 +0000
Branch: REL_16_STABLE [7ece76129] 2025-08-19 04:54:19 +0000
Branch: REL_15_STABLE [e41137155] 2025-08-19 04:41:14 +0000
Branch: REL_14_STABLE [ef7750274] 2025-08-19 04:28:19 +0000
Branch: REL_13_STABLE [0a98f24a6] 2025-08-19 04:17:03 +0000
-->
     <para>
      Avoid deadlock during <command>DROP SUBSCRIPTION</command> when
      publisher is on the same server as subscriber (Dilip Kumar)
      <ulink url="&commit_baseurl;0a98f24a6">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [883a95646] 2025-10-22 11:27:15 +0900
Branch: REL_18_STABLE [9670032cc] 2025-10-22 11:28:48 +0900
Branch: REL_17_STABLE [62d5ee75b] 2025-10-22 11:28:57 +0900
Branch: REL_16_STABLE [2e55cf4ef] 2025-10-22 11:29:02 +0900
Branch: REL_15_STABLE [59b215f72] 2025-10-22 11:29:07 +0900
Branch: REL_14_STABLE [a7ab6ce6a] 2025-10-22 11:29:13 +0900
Branch: REL_13_STABLE [7d7ebdb80] 2025-10-22 11:29:18 +0900
-->
     <para>
      Fix incorrect reporting of replication lag
      in <structname>pg_stat_replication</structname> view (Fujii Masao)
      <ulink url="&commit_baseurl;7d7ebdb80">&sect;</ulink>
     </para>

     <para>
      If any standby server's replay LSN stopped advancing,
      the <structfield>write_lag</structfield>
      and <structfield>flush_lag</structfield> columns would eventually
      stop updating.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [f33e60a53] 2025-10-22 20:09:43 +0900
Branch: REL_18_STABLE [6ff7ba9fe] 2025-10-22 20:10:58 +0900
Branch: REL_17_STABLE [1db2870bb] 2025-10-22 20:11:47 +0900
Branch: REL_16_STABLE [4fd916eab] 2025-10-22 20:12:36 +0900
Branch: REL_15_STABLE [caf529aba] 2025-10-22 20:13:15 +0900
Branch: REL_14_STABLE [f106f53df] 2025-10-22 20:14:02 +0900
Branch: REL_13_STABLE [b00a16bae] 2025-10-22 20:14:07 +0900
-->
     <para>
      Avoid duplicative log messages about
      invalid <varname>primary_slot_name</varname> settings (Fujii Masao)
      <ulink url="&commit_baseurl;b00a16bae">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [912af1c7e] 2025-10-10 09:23:59 +0900
Branch: REL_18_STABLE [9a6ea00ac] 2025-10-10 09:24:48 +0900
Branch: REL_17_STABLE [42348839d] 2025-10-10 09:24:50 +0900
Branch: REL_16_STABLE [bfdd1a12d] 2025-10-10 09:24:53 +0900
Branch: REL_15_STABLE [0adf424b4] 2025-10-10 09:24:54 +0900
Branch: REL_14_STABLE [f57f2760e] 2025-10-10 09:24:57 +0900
Branch: REL_13_STABLE [c878d9808] 2025-10-10 09:24:59 +0900
-->
     <para>
      Remove the unfinished slot state file after failing to write a
      replication slot's state to disk (Michael Paquier)
      <ulink url="&commit_baseurl;c878d9808">&sect;</ulink>
     </para>

     <para>
      Previously, a failure such as out-of-disk-space resulted in leaving
      a temporary <filename>state.tmp</filename> file behind.  That's
      problematic because it would block all subsequent attempts to
      write the state, requiring manual intervention to clean up.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [17b2d5ec7] 2025-11-04 10:47:38 +0900
Branch: REL_18_STABLE [a14201073] 2025-11-04 10:52:33 +0900
Branch: REL_17_STABLE [e7340b484] 2025-11-04 10:52:35 +0900
Branch: REL_16_STABLE [9b6109607] 2025-11-04 10:52:38 +0900
Branch: REL_15_STABLE [da5ea6c70] 2025-11-04 10:52:41 +0900
Branch: REL_14_STABLE [a1b8b3b2e] 2025-11-04 10:52:42 +0900
Branch: REL_13_STABLE [25b484080] 2025-11-04 10:52:44 +0900
-->
     <para>
      Avoid unwanted WAL receiver shutdown when switching from streaming
      to archive WAL source (Xuneng Zhou)
      <ulink url="&commit_baseurl;25b484080">&sect;</ulink>
     </para>

     <para>
      During a timeline change, a standby server's WAL receiver should
      remain alive, waiting for a new WAL streaming start point.  Instead
      it was repeatedly shutting down and immediately getting restarted,
      which could confuse status monitoring code.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [ef03ea01f] 2025-08-22 09:03:59 +0900
Branch: REL_18_STABLE Release: REL_18_0 [86831952a] 2025-08-22 09:06:34 +0900
Branch: REL_17_STABLE [dcdc95cb4] 2025-08-22 09:06:36 +0900
Branch: REL_16_STABLE [ab874faaa] 2025-08-22 09:06:37 +0900
Branch: REL_15_STABLE [ec471008c] 2025-08-22 09:06:38 +0900
Branch: REL_14_STABLE [222130edd] 2025-08-22 09:06:40 +0900
Branch: REL_13_STABLE [30b32b08c] 2025-08-22 09:06:42 +0900
-->
     <para>
      Avoid failures in logical replication due to chance collisions of
      file numbers between regular and temporary tables (Vignesh C)
      <ulink url="&commit_baseurl;30b32b08c">&sect;</ulink>
     </para>

     <para>
      This low-probability problem manifested as transient errors
      like <quote>unexpected duplicate for
      tablespace <replaceable>X</replaceable>,
      relfilenode <replaceable>Y</replaceable></quote>.
      <filename>contrib/autoprewarm</filename> was also affected.
      A side-effect of the fix is that the SQL
      function <function>pg_filenode_relation()</function> will now ignore
      temporary tables.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [1f2e51e3c] 2025-08-20 15:00:04 +0900
Branch: REL_18_STABLE Release: REL_18_0 [ea1c6b0b0] 2025-08-20 15:00:08 +0900
Branch: REL_17_STABLE [07a302387] 2025-08-20 15:00:10 +0900
Branch: REL_16_STABLE [fea1cc3f7] 2025-08-20 15:00:13 +0900
Branch: REL_15_STABLE [818be9b73] 2025-08-20 15:00:14 +0900
Branch: REL_14_STABLE [32d388d00] 2025-08-20 15:00:16 +0900
Branch: REL_13_STABLE [8ed079cad] 2025-08-20 15:00:17 +0900
-->
     <para>
      Avoid assertion failure when trying to release a replication slot in
      single-user mode (Hayato Kuroda)
      <ulink url="&commit_baseurl;8ed079cad">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [03bf7a12c] 2025-10-13 17:56:45 -0400
Branch: REL_18_STABLE [b48ae226e] 2025-10-13 17:56:45 -0400
Branch: REL_17_STABLE [4c53519e1] 2025-10-13 17:56:45 -0400
Branch: REL_16_STABLE [9883e3cd1] 2025-10-13 17:56:45 -0400
Branch: REL_15_STABLE [f91666c83] 2025-10-13 17:56:45 -0400
Branch: REL_14_STABLE [e91eb4ad6] 2025-10-13 17:56:45 -0400
Branch: REL_13_STABLE [75a555d61] 2025-10-13 17:56:45 -0400
-->
     <para>
      Fix incorrect printing of messages about failures in checking
      whether the user has Windows administrator privilege (Bryan Green)
      <ulink url="&commit_baseurl;75a555d61">&sect;</ulink>
     </para>

     <para>
      This code would have crashed or at least printed garbage.
      No such cases have been reported though, indicating that failure of
      these system calls is extremely rare.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [21fddb3d7] 2025-08-13 12:00:03 -0400
Branch: REL_18_STABLE Release: REL_18_0 [787cd2b7d] 2025-08-13 11:59:47 -0400
Branch: REL_17_STABLE [ab92f0e7f] 2025-08-13 11:59:47 -0400
Branch: REL_16_STABLE [e67d5f7ba] 2025-08-13 11:59:47 -0400
Branch: REL_15_STABLE [f4c088344] 2025-08-13 11:59:47 -0400
Branch: REL_14_STABLE [b3d6e8b63] 2025-08-13 11:59:47 -0400
Branch: REL_13_STABLE [e3b3fa863] 2025-08-13 11:59:47 -0400
-->
     <para>
      Avoid startup failure on macOS and BSD platforms when there is a
      collision with a pre-existing semaphore set (Tom Lane)
      <ulink url="&commit_baseurl;e3b3fa863">&sect;</ulink>
     </para>

     <para>
      If the pre-existing set has fewer semaphores than we asked for,
      these platforms return <systemitem>EINVAL</systemitem>
      not <systemitem>EEXIST</systemitem> as our code expected, resulting
      in failure to start the database.
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [50eb4e118] 2025-10-30 14:48:10 +1300
Branch: REL_18_STABLE [af3a79e08] 2025-10-30 14:49:07 +1300
Branch: REL_17_STABLE [bd6f986c9] 2025-10-30 14:49:42 +1300
Branch: REL_16_STABLE [cdc04a6c3] 2025-10-30 14:50:05 +1300
Branch: REL_15_STABLE [f3420e006] 2025-10-30 14:50:26 +1300
Branch: REL_14_STABLE [86bd9497f] 2025-10-30 14:50:46 +1300
Branch: REL_13_STABLE [7b955c227] 2025-10-30 14:51:08 +1300
-->
     <para>
      Fix false memory-context-checking warnings in debug builds
      on 64-bit Windows (David Rowley)
      <ulink url="&commit_baseurl;7b955c227">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [798b19d27] 2025-10-23 11:47:46 -0400
Branch: REL_18_STABLE [447a794f6] 2025-10-23 11:47:46 -0400
Branch: REL_17_STABLE [fbc41a145] 2025-10-23 11:47:46 -0400
Branch: REL_16_STABLE [cbfd4d0f8] 2025-10-23 11:47:46 -0400
Branch: REL_15_STABLE [4cde73259] 2025-10-23 11:47:46 -0400
Branch: REL_14_STABLE [7fb8c9240] 2025-10-23 11:47:46 -0400
Branch: REL_13_STABLE [d90c92d1c] 2025-10-23 11:47:46 -0400
-->
     <para>
      Avoid leaking memory when handling a SQL error within PL/Python
      (Tom Lane)
      <ulink url="&commit_baseurl;d90c92d1c">&sect;</ulink>
     </para>

     <para>
      This fixes a session-lifespan memory leak introduced in our previous
      minor releases.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ea78bd6d5] 2025-10-05 16:27:47 -0400
Branch: REL_18_STABLE [d83879a32] 2025-10-05 16:27:47 -0400
Branch: REL_17_STABLE [1c4671f7b] 2025-10-05 16:27:47 -0400
Branch: REL_16_STABLE [46c4478db] 2025-10-05 16:27:47 -0400
Branch: REL_15_STABLE [771b106d1] 2025-10-05 16:27:47 -0400
Branch: REL_14_STABLE [f46d77377] 2025-10-05 16:27:47 -0400
Branch: REL_13_STABLE [fc287cf3c] 2025-10-05 16:27:47 -0400
-->
     <para>
      Fix <application>libpq</application>'s handling of socket-related
      errors on Windows within its GSSAPI logic (Ning Wu, Tom Lane)
      <ulink url="&commit_baseurl;fc287cf3c">&sect;</ulink>
     </para>

     <para>
      The code for encrypting/decrypting transmitted data using GSSAPI did
      not correctly recognize error conditions on the connection socket,
      since Windows reports those differently than other platforms.  This
      led to failure to make such connections on Windows.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [8e5b92928] 2025-09-16 16:44:58 +0900
Branch: REL_18_STABLE Release: REL_18_0 [176002c5b] 2025-09-16 16:46:28 +0900
Branch: REL_17_STABLE [968141898] 2025-09-16 16:46:36 +0900
Branch: REL_16_STABLE [20b23784f] 2025-09-16 16:46:43 +0900
Branch: REL_15_STABLE [165b07efe] 2025-09-16 16:46:51 +0900
Branch: REL_14_STABLE [295c0a644] 2025-09-16 16:46:58 +0900
Branch: REL_13_STABLE [dff7591a7] 2025-09-16 16:47:05 +0900
-->
     <para>
      In <application>pg_dump</application>, dump security labels on
      subscriptions and event triggers (Jian He, Fujii Masao)
      <ulink url="&commit_baseurl;dff7591a7">&sect;</ulink>
     </para>

     <para>
      Labels on these types of objects were previously missed.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [b61a5c4be] 2025-08-22 20:50:28 -0700
Branch: REL_18_STABLE Release: REL_18_0 [7652142f4] 2025-08-22 20:50:31 -0700
Branch: REL_17_STABLE [e8d22095e] 2025-08-22 20:50:32 -0700
Branch: REL_16_STABLE [e68fa9a83] 2025-08-22 20:50:32 -0700
Branch: REL_15_STABLE [fbf967e99] 2025-08-22 20:50:32 -0700
Branch: REL_14_STABLE [4948bb9df] 2025-08-22 20:50:33 -0700
Branch: REL_13_STABLE [05341b2e9] 2025-08-22 20:50:33 -0700
Branch: master [ad4412480] 2025-08-23 16:46:20 -0700
Branch: REL_18_STABLE Release: REL_18_0 [c6dca7c3d] 2025-08-23 16:46:24 -0700
Branch: REL_17_STABLE [49a09c6c5] 2025-08-23 16:46:24 -0700
Branch: REL_16_STABLE [412d29fd2] 2025-08-23 16:46:24 -0700
Branch: REL_15_STABLE [090c9c960] 2025-08-23 16:46:25 -0700
Branch: REL_14_STABLE [22c6a44f0] 2025-08-23 16:46:25 -0700
Branch: REL_13_STABLE [fb75e1ef7] 2025-08-23 16:46:26 -0700
Author: Álvaro Herrera <alvherre@kurilemu.de>
Branch: master [4921a5972] 2025-10-18 17:50:10 +0200
Branch: REL_18_STABLE [162e70ea0] 2025-10-18 17:50:10 +0200
Branch: REL_17_STABLE [7419c99a2] 2025-10-18 17:50:10 +0200
Branch: REL_16_STABLE [06c1ee6b7] 2025-10-18 17:50:10 +0200
Branch: REL_15_STABLE [4cc3b4445] 2025-10-18 17:50:10 +0200
Branch: REL_14_STABLE [6062c3db3] 2025-10-18 17:50:10 +0200
Branch: REL_13_STABLE [d20df9590] 2025-10-18 17:50:10 +0200
-->
     <para>
      Fix <application>pg_dump</application>'s sorting of default ACLs and
      foreign key constraints (Kirill Reshke, Álvaro Herrera)
      <ulink url="&commit_baseurl;05341b2e9">&sect;</ulink>
      <ulink url="&commit_baseurl;fb75e1ef7">&sect;</ulink>
      <ulink url="&commit_baseurl;d20df9590">&sect;</ulink>
     </para>

     <para>
      Ensure consistent ordering of these database object types, as was
      already done for other object types.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [c044b50d1] 2025-09-16 09:40:44 -0700
Branch: REL_18_STABLE Release: REL_18_0 [4ad846445] 2025-09-16 09:40:48 -0700
Branch: REL_17_STABLE [e127764b6] 2025-09-16 09:40:48 -0700
Branch: REL_16_STABLE [3cf328eca] 2025-09-16 09:40:48 -0700
Branch: REL_15_STABLE [0773f3a87] 2025-09-16 09:40:49 -0700
Branch: REL_14_STABLE [85d6ed31f] 2025-09-16 09:40:49 -0700
Branch: REL_13_STABLE [a685c057a] 2025-09-16 09:40:50 -0700
-->
     <para>
      In <application>pg_dump</application>, label comments for
      separately-dumped domain constraints with the proper dependency
      (Noah Misch)
      <ulink url="&commit_baseurl;a685c057a">&sect;</ulink>
     </para>

     <para>
      This error could lead to
      parallel <application>pg_restore</application> attempting to create
      the comment before the constraint itself has been restored.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [b54e8dbfe] 2025-09-16 10:35:12 +0900
Branch: REL_18_STABLE Release: REL_18_0 [77d2b155c] 2025-09-16 10:36:20 +0900
Branch: REL_17_STABLE [f7f9c5d65] 2025-09-16 10:36:54 +0900
Branch: REL_16_STABLE [97527a5e6] 2025-09-16 10:37:38 +0900
Branch: REL_15_STABLE [c8ed16050] 2025-09-16 10:38:09 +0900
Branch: REL_14_STABLE [db900ec35] 2025-09-16 10:38:40 +0900
Branch: REL_13_STABLE [8fbd1f8ea] 2025-09-16 10:39:13 +0900
Branch: master [45f50c995] 2025-09-18 11:09:15 +0900
Branch: REL_18_STABLE Release: REL_18_0 [7aecc00b3] 2025-09-18 11:10:12 +0900
Branch: REL_17_STABLE [dc8aa2f58] 2025-09-18 11:10:18 +0900
Branch: REL_16_STABLE [0870397cc] 2025-09-18 11:10:24 +0900
Branch: REL_15_STABLE [5f42008f9] 2025-09-18 11:10:30 +0900
Branch: REL_14_STABLE [bc476f8b8] 2025-09-18 11:10:37 +0900
Branch: REL_13_STABLE [a4dbb11bb] 2025-09-18 11:10:43 +0900
-->
     <para>
      In <application>pg_restore</application>, skip comments and security
      labels for publications and subscriptions that are not being
      restored (Jian He, Fujii Masao)
      <ulink url="&commit_baseurl;8fbd1f8ea">&sect;</ulink>
      <ulink url="&commit_baseurl;a4dbb11bb">&sect;</ulink>
     </para>

     <para>
      Do not emit <command>COMMENT</command> or <command>SECURITY
      LABEL</command> commands for these objects
      when <option>--no-publications</option>
      or <option>--no-subscriptions</option> is specified.
     </para>
    </listitem>

    <listitem>
<!--
Author: Daniel Gustafsson <dgustafsson@postgresql.org>
Branch: master [e686010c5] 2025-08-29 19:28:46 +0200
Branch: REL_18_STABLE Release: REL_18_0 [8980c724b] 2025-08-29 19:28:46 +0200
Branch: REL_17_STABLE [92268b35d] 2025-08-29 19:28:46 +0200
Branch: REL_16_STABLE [ec017a305] 2025-08-29 19:28:46 +0200
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a239c4a0c] 2025-10-13 12:44:20 -0400
Branch: REL_18_STABLE [6a4009747] 2025-10-13 12:44:20 -0400
Branch: REL_17_STABLE [bf18e9bd7] 2025-10-13 12:44:20 -0400
Branch: REL_16_STABLE [1518b7d76] 2025-10-13 12:44:20 -0400
Branch: master [277dec651] 2025-10-19 14:36:58 -0400
Branch: REL_18_STABLE [aa1fcd087] 2025-10-19 14:36:58 -0400
Branch: REL_17_STABLE [2efca1633] 2025-10-19 14:36:58 -0400
Branch: REL_16_STABLE [c865f5b9f] 2025-10-19 14:36:58 -0400
Branch: REL_15_STABLE [8b9924bce] 2025-10-19 14:36:58 -0400
Branch: REL_14_STABLE [40dc710a6] 2025-10-19 14:36:58 -0400
Branch: REL_13_STABLE [33276cd02] 2025-10-19 14:36:58 -0400
-->
     <para>
      Fix assorted errors in the data compression logic
      in <application>pg_dump</application>
      and <application>pg_restore</application>
      (Daniel Gustafsson, Tom Lane)
      <ulink url="&commit_baseurl;33276cd02">&sect;</ulink>
     </para>

     <para>
      Error checking was missing or incorrect in several places, and there
      were also portability issues that would manifest on big-endian
      hardware.  These problems had been missed because this code is only
      used to read compressed TOC files within directory-format
      dumps.   <application>pg_dump</application> never produces such a
      dump; the case can be reached only by manually compressing the TOC
      file after the fact, which is a supported thing to do but very
      uncommon.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [902c08887] 2025-10-03 14:03:55 +0900
Branch: REL_18_STABLE [c00637b5f] 2025-10-03 14:04:00 +0900
Branch: REL_17_STABLE [de6de069d] 2025-10-03 14:04:01 +0900
Branch: REL_16_STABLE [640590bb4] 2025-10-03 14:04:03 +0900
Branch: REL_15_STABLE [b5cefc197] 2025-10-03 14:04:05 +0900
Branch: REL_14_STABLE [9b3beb7c6] 2025-10-03 14:04:06 +0900
Branch: REL_13_STABLE [f1a2f3a0c] 2025-10-03 14:04:08 +0900
-->
     <para>
      Fix <application>pgbench</application> to error out cleanly if
      a <literal>COPY</literal> operation is started (Anthonin Bonnefoy)
      <ulink url="&commit_baseurl;f1a2f3a0c">&sect;</ulink>
     </para>

     <para>
      <application>pgbench</application> doesn't intend to support this
      case, but previously it went into an infinite loop.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [19d4f9ffc] 2025-09-30 23:52:28 +0900
Branch: REL_18_STABLE [29aabbc43] 2025-09-30 23:53:32 +0900
Branch: REL_17_STABLE [a912118c6] 2025-09-30 23:53:46 +0900
Branch: REL_16_STABLE [36c4d30c8] 2025-09-30 23:53:53 +0900
Branch: REL_15_STABLE [bdccb6302] 2025-09-30 23:54:01 +0900
Branch: REL_14_STABLE [cb21e1f92] 2025-09-30 23:55:02 +0900
Branch: REL_13_STABLE [7d7e81d1e] 2025-09-30 23:55:33 +0900
-->
     <para>
      Fix <application>pgbench</application>'s reporting of multiple
      errors (Yugo Nagata)
      <ulink url="&commit_baseurl;7d7e81d1e">&sect;</ulink>
     </para>

     <para>
      In cases where two successive <function>PQgetResult</function> calls
      both fail, <application>pgbench</application> might report the wrong
      error message.
     </para>
    </listitem>

    <listitem>
<!--
Author: Masahiko Sawada <msawada@postgresql.org>
Branch: master [8ae0f6a0c] 2025-11-04 15:47:25 -0800
Branch: REL_18_STABLE [71aa2e114] 2025-11-04 15:47:22 -0800
Branch: master [eab9e4e27] 2025-08-19 12:11:42 -0700
Branch: REL_18_STABLE Release: REL_18_0 [0beb7e933] 2025-08-19 12:11:39 -0700
Branch: REL_17_STABLE [b6090ed96] 2025-08-19 12:11:37 -0700
Branch: REL_16_STABLE [815fcfb20] 2025-08-19 12:11:34 -0700
Branch: REL_15_STABLE [eb9ee4d18] 2025-08-19 12:11:32 -0700
Branch: REL_14_STABLE [79643105a] 2025-08-19 12:11:29 -0700
Branch: REL_13_STABLE [7d8d36289] 2025-08-19 12:11:25 -0700
-->
     <para>
      Ensure that <filename>contrib/pg_buffercache</filename> functions
      can be canceled (Satyanarayana Narlapuram, Yuhang Qiu)
      <ulink url="&commit_baseurl;7d8d36289">&sect;</ulink>
     </para>

     <para>
      Some code paths were capable of running for a long time without
      checking for interrupts.
     </para>
    </listitem>

    <listitem>
<!--
Author: Nathan Bossart <nathan@postgresql.org>
Branch: master [208927e65] 2025-10-17 11:36:50 -0500
Branch: REL_18_STABLE [3ccf8e9ac] 2025-10-17 11:36:50 -0500
Branch: REL_17_STABLE [a0551bc57] 2025-10-17 11:36:50 -0500
Branch: REL_16_STABLE [fae0ce5e3] 2025-10-17 11:36:50 -0500
Branch: REL_15_STABLE [6c03ae8d6] 2025-10-17 11:36:50 -0500
Branch: REL_14_STABLE [f146eb45c] 2025-10-17 11:36:50 -0500
Branch: REL_13_STABLE [19a64f567] 2025-10-17 11:36:50 -0500
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [da44d71e7] 2025-10-18 18:36:21 -0400
Branch: REL_18_STABLE [c29d32d27] 2025-10-18 18:36:21 -0400
Branch: REL_17_STABLE [d4e8c37cc] 2025-10-18 18:36:21 -0400
Branch: REL_16_STABLE [c26a8eaf6] 2025-10-18 18:36:21 -0400
-->
     <para>
      Fix <filename>contrib/pg_prewarm</filename>'s privilege checks for
      indexes (Ayush Vatsa, Nathan Bossart)
      <ulink url="&commit_baseurl;19a64f567">&sect;</ulink>
     </para>

     <para>
      <function>pg_prewarm()</function> requires <literal>SELECT</literal>
      privilege on relations to be prewarmed.  However, since indexes have
      no SQL privileges of their own, this resulted in non-superusers
      being unable to prewarm indexes.  Instead, check
      for <literal>SELECT</literal> privilege on the index's table.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [684a745f5] 2025-10-02 11:07:30 +0900
Branch: REL_18_STABLE [fc295beb7] 2025-10-02 11:09:10 +0900
Branch: REL_17_STABLE [036decbba] 2025-10-02 11:09:12 +0900
Branch: REL_16_STABLE [c0f9fe877] 2025-10-02 11:09:13 +0900
Branch: REL_15_STABLE [49b5f0b53] 2025-10-02 11:09:15 +0900
Branch: REL_14_STABLE [ee2dbcad0] 2025-10-02 11:09:17 +0900
Branch: REL_13_STABLE [c207bf473] 2025-10-02 11:09:19 +0900
-->
     <para>
      Make <filename>contrib/pgstattuple</filename> more robust about
      empty or invalid index pages (Nitin Motiani)
      <ulink url="&commit_baseurl;c207bf473">&sect;</ulink>
     </para>

     <para>
      Count all-zero pages as free space, and ignore pages that are
      invalid according to a check of the page's special-space size.
      The code for btree indexes already counted all-zero pages as free,
      but the hash and gist code would error out, which has been found to
      be much less user-friendly.  Similarly, make all three cases agree
      on ignoring corrupted pages rather than throwing errors.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [c5d34f4a5] 2025-11-08 12:26:43 +1300
Branch: REL_18_STABLE [f8ccab0e9] 2025-11-08 12:28:15 +1300
Branch: REL_17_STABLE [03d9140cb] 2025-11-08 12:28:52 +1300
Branch: REL_16_STABLE [2f76ffe5e] 2025-11-08 12:29:15 +1300
Branch: REL_15_STABLE [1c7cba4c5] 2025-11-08 12:30:08 +1300
Branch: REL_14_STABLE [d8ba910b0] 2025-11-08 12:32:42 +1300
Branch: REL_13_STABLE [77b5b2c6f] 2025-11-08 12:33:01 +1300
-->
     <para>
      Harden our read and write barrier macros to satisfy Clang
      (Thomas Munro)
      <ulink url="&commit_baseurl;77b5b2c6f">&sect;</ulink>
     </para>

     <para>
      We supposed that <function>__atomic_thread_fence()</function> is a
      sufficient barrier to prevent the C compiler from re-ordering memory
      accesses around it, but it appears that that's not true for Clang,
      allowing it to generate incorrect code for at least RISC-V, MIPS,
      and LoongArch machines.  Add explicit compiler barriers to fix that.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [282d0bdee] 2025-09-15 08:31:11 +0200
Branch: REL_18_STABLE Release: REL_18_0 [c11ac811a] 2025-09-15 08:31:36 +0200
Branch: REL_17_STABLE [755f01ad7] 2025-09-15 08:31:47 +0200
Branch: REL_16_STABLE [2670881af] 2025-09-15 08:31:53 +0200
Branch: REL_15_STABLE [72a24bebc] 2025-09-15 08:31:59 +0200
Branch: REL_14_STABLE [fbfc36e94] 2025-09-15 08:32:08 +0200
Branch: REL_13_STABLE [59d6e843e] 2025-09-15 08:32:14 +0200
-->
     <para>
      Fix building with LLVM version 21 and later (Holger Hoffstätte)
      <ulink url="&commit_baseurl;59d6e843e">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Álvaro Herrera <alvherre@kurilemu.de>
Branch: master [6ad9378c9] 2025-10-16 20:21:05 +0200
Branch: REL_18_STABLE [6aa04a60c] 2025-10-16 20:21:05 +0200
Branch: REL_17_STABLE [a8933194e] 2025-10-16 20:21:05 +0200
Branch: REL_16_STABLE [a506b0c0a] 2025-10-16 20:21:05 +0200
Branch: REL_15_STABLE [33202cba8] 2025-10-16 20:21:05 +0200
Branch: REL_14_STABLE [56cd332f8] 2025-10-16 20:21:05 +0200
Branch: REL_13_STABLE [f768f5a7d] 2025-10-16 20:21:05 +0200
-->
     <para>
      Fix PGXS build infrastructure to support building
      NLS <filename>po</filename> files for extensions (Ryo Matsumura)
      <ulink url="&commit_baseurl;f768f5a7d">&sect;</ulink>
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-22">
  <title>Release 13.22</title>

  <formalpara>
  <title>Release date:</title>
  <para>2025-08-14</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.21.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <para>
   The <productname>PostgreSQL</productname> community will stop
   releasing updates for the 13.X release series in November 2025.
   Users are encouraged to update to a newer release branch soon.
  </para>

  <sect2>
   <title>Migration to Version 13.22</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you are upgrading from a version earlier than 13.21,
    see <xref linkend="release-13-21"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [22424953c] 2025-08-11 09:03:11 +0100
Branch: REL_18_STABLE [64f77c6a6] 2025-08-11 09:07:36 +0100
Branch: REL_17_STABLE [a85eddab2] 2025-08-11 09:09:12 +0100
Branch: REL_16_STABLE [7e86da539] 2025-08-11 09:10:17 +0100
Branch: REL_15_STABLE [415badc13] 2025-08-11 09:11:02 +0100
Branch: REL_14_STABLE [afe38fb6a] 2025-08-11 09:12:09 +0100
Branch: REL_13_STABLE [533211ded] 2025-08-11 09:13:20 +0100
-->
     <para>
      Tighten security checks in planner estimation functions
      (Dean Rasheed)
      <ulink url="&commit_baseurl;533211ded">&sect;</ulink>
     </para>

     <para>
      The fix for CVE-2017-7484, plus followup fixes, intended to prevent
      leaky functions from being applied to statistics data for columns
      that the calling user does not have permission to read.  Two gaps in
      that protection have been found.  One gap applies to partitioning
      and inheritance hierarchies where RLS policies on the tables should
      restrict access to statistics data, but did not.
     </para>

     <para>
      The other gap applies to cases where the query accesses a table via
      a view, and the view owner has permissions to read the underlying
      table but the calling user does not have permissions on the view.
      The view owner's permissions satisfied the security checks, and the
      leaky function would get applied to the underlying table's
      statistics before we check the calling user's permissions on the
      view.  This has been fixed by making security checks on views occur
      at the start of planning.  That might cause permissions failures to
      occur earlier than before.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Dean Rasheed for reporting this problem.
      (CVE-2025-8713)
     </para>
    </listitem>

    <listitem>
<!--
Author: Nathan Bossart <nathan@postgresql.org>
Branch: master [71ea0d679] 2025-08-11 09:00:00 -0500
Branch: REL_18_STABLE [67a2fbb8f] 2025-08-11 09:00:00 -0500
Branch: REL_17_STABLE [575f54d4c] 2025-08-11 09:00:00 -0500
Branch: REL_16_STABLE [7ad8e7909] 2025-08-11 09:00:00 -0500
Branch: REL_15_STABLE [424040506] 2025-08-11 09:00:00 -0500
Branch: REL_14_STABLE [e4998d089] 2025-08-11 09:00:00 -0500
Branch: REL_13_STABLE [c204bd39f] 2025-08-11 09:00:00 -0500
Branch: REL_14_STABLE [8967c33c6] 2025-08-11 12:37:00 -0500
Branch: REL_13_STABLE [27d3dee68] 2025-08-11 12:37:00 -0500
-->
     <para>
      Prevent <application>pg_dump</application> scripts from being used
      to attack the user running the restore (Nathan Bossart)
      <ulink url="&commit_baseurl;c204bd39f">&sect;</ulink>
      <ulink url="&commit_baseurl;27d3dee68">&sect;</ulink>
     </para>

     <para>
      Since dump/restore operations typically involve running SQL commands
      as superuser, the target database installation must trust the source
      server.  However, it does not follow that the operating system user
      who executes <application>psql</application> to perform the restore
      should have to trust the source server.  The risk here is that an
      attacker who has gained superuser-level control over the source
      server might be able to cause it to emit text that would be
      interpreted as <application>psql</application> meta-commands.
      That would provide shell-level access to the restoring user's own
      account, independently of access to the target database.
     </para>

     <para>
      To provide a positive guarantee that this can't happen,
      extend <application>psql</application> with
      a <command>\restrict</command> command that prevents execution of
      further meta-commands, and teach <application>pg_dump</application>
      to issue that before any data coming from the source server.
     </para>

     <para>
      The PostgreSQL Project thanks Martin Rakhmanov, Matthieu Denais, and
      RyotaK for reporting this problem.
      (CVE-2025-8714)
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [70693c645] 2025-08-11 06:18:59 -0700
Branch: REL_18_STABLE [13a67ce60] 2025-08-11 06:19:03 -0700
Branch: REL_17_STABLE [9b92f115b] 2025-08-11 06:19:03 -0700
Branch: REL_16_STABLE [850caae60] 2025-08-11 06:19:03 -0700
Branch: REL_15_STABLE [9751f934a] 2025-08-11 06:19:04 -0700
Branch: REL_14_STABLE [0f5838438] 2025-08-11 06:19:04 -0700
Branch: REL_13_STABLE [2179e6005] 2025-08-11 06:19:05 -0700
-->
     <para>
      Convert newlines to spaces in names included in comments
      in <application>pg_dump</application> output
      (Noah Misch)
      <ulink url="&commit_baseurl;2179e6005">&sect;</ulink>
     </para>

     <para>
      Object names containing newlines offered the ability to inject
      arbitrary SQL commands into the output script.  (Without the
      preceding fix, injection of <application>psql</application>
      meta-commands would also be possible this way.)
      CVE-2012-0868 fixed this class of problem at the time, but later
      work reintroduced several cases.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Noah Misch for reporting this problem.
      (CVE-2025-8715)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [71c0921b6] 2025-07-28 16:50:41 -0400
Branch: REL_18_STABLE [637ead2e1] 2025-07-28 16:50:41 -0400
Branch: REL_17_STABLE [fd4ad33fe] 2025-07-28 16:50:41 -0400
Branch: REL_16_STABLE [6d5e493b4] 2025-07-28 16:50:42 -0400
Branch: REL_15_STABLE [0ffbd345e] 2025-07-28 16:50:42 -0400
Branch: REL_14_STABLE [0395464af] 2025-07-28 16:50:42 -0400
Branch: REL_13_STABLE [589d6e640] 2025-07-28 16:50:42 -0400
Branch: master [902f92221] 2025-07-29 12:47:38 -0400
Branch: REL_18_STABLE [d5f014d89] 2025-07-29 12:47:19 -0400
Branch: REL_17_STABLE [7571e0f6e] 2025-07-29 12:47:19 -0400
Branch: REL_16_STABLE [762c6d8d2] 2025-07-29 12:47:19 -0400
Branch: REL_15_STABLE [0928e18eb] 2025-07-29 12:47:20 -0400
Branch: REL_14_STABLE [cdcdabce5] 2025-07-29 12:47:20 -0400
Branch: REL_13_STABLE [0ae824704] 2025-07-29 12:47:20 -0400
-->
     <para>
      Avoid regression in the size of XML input that we will accept
      (Michael Paquier, Erik Wienhold)
      <ulink url="&commit_baseurl;589d6e640">&sect;</ulink>
      <ulink url="&commit_baseurl;0ae824704">&sect;</ulink>
     </para>

     <para>
      Our workaround for a bug in early 2.13.x releases
      of <application>libxml2</application> made use of a code path that
      rejects text chunks exceeding 10MB, whereas the previous coding did
      not.  Those early releases are presumably extinct in the wild by
      now, so revert to the previous coding.
     </para>
    </listitem>

    <listitem>
<!--
Author: Etsuro Fujita <efujita@postgresql.org>
Branch: master [9e63f83a7] 2025-08-08 17:35:00 +0900
Branch: REL_18_STABLE [bba6a6faf] 2025-08-08 17:35:00 +0900
Branch: REL_17_STABLE [e028ce911] 2025-08-08 17:35:01 +0900
Branch: REL_16_STABLE [3863c6fb6] 2025-08-08 17:35:02 +0900
Branch: REL_15_STABLE [f39a7f32a] 2025-08-08 17:35:02 +0900
Branch: REL_14_STABLE [73eb6afa1] 2025-08-08 17:35:03 +0900
Branch: REL_13_STABLE [afdb4cde1] 2025-08-08 17:35:04 +0900
-->
     <para>
      Allow tables with statement-level triggers to become partitions or
      inheritance children (Etsuro Fujita)
      <ulink url="&commit_baseurl;afdb4cde1">&sect;</ulink>
     </para>

     <para>
      We do not allow partitions or inheritance child tables to have
      row-level triggers with transition tables, because an operation on
      the whole inheritance tree would need to maintain a separate
      transition table for each such child table.  But that problem does
      not apply for statement-level triggers, because only the parent's
      statement-level triggers will be fired.  The code that checks
      whether an existing table can become a partition or inheritance
      child nonetheless rejected both kinds of trigger.
     </para>
    </listitem>

    <listitem>
<!--
Author: Etsuro Fujita <efujita@postgresql.org>
Branch: master [62a1211d3] 2025-08-08 10:50:00 +0900
Branch: REL_18_STABLE [ce8817022] 2025-08-08 10:50:01 +0900
Branch: REL_17_STABLE [9048a83c7] 2025-08-08 10:50:02 +0900
Branch: REL_16_STABLE [9cca445df] 2025-08-08 10:50:02 +0900
Branch: REL_15_STABLE [d642d2306] 2025-08-08 10:50:03 +0900
Branch: REL_14_STABLE [e94fc1a8a] 2025-08-08 10:50:04 +0900
Branch: REL_13_STABLE [b6641f7b0] 2025-08-08 10:50:05 +0900
-->
     <para>
      Disallow collecting transition tuples from child foreign tables
      (Etsuro Fujita)
      <ulink url="&commit_baseurl;b6641f7b0">&sect;</ulink>
     </para>

     <para>
      We do not support triggers with transition tables on foreign tables.
      However, the case of a partition or inheritance child that is a
      foreign table was overlooked.  If the parent has such a trigger,
      incorrect transition tuples were collected from the foreign child.
      Instead throw an error, reporting that the case is not supported.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_18_BR [5861b1f34] 2025-06-20 13:41:11 -0400
Branch: REL_17_STABLE [fdd826922] 2025-06-20 13:41:11 -0400
Branch: REL_16_STABLE [1e24ea160] 2025-06-20 13:41:11 -0400
Branch: REL_15_STABLE [75b8982ea] 2025-06-20 13:41:11 -0400
Branch: REL_14_STABLE [27af8b9be] 2025-06-20 13:41:11 -0400
Branch: REL_13_STABLE [4b66cb188] 2025-06-20 13:41:11 -0400
-->
     <para>
      Shorten the race condition window for creating indexes with
      conflicting names (Tom Lane)
      <ulink url="&commit_baseurl;4b66cb188">&sect;</ulink>
     </para>

     <para>
      When choosing an auto-generated name for an index, avoid conflicting
      with not-yet-committed <structname>pg_class</structname> rows as
      well as fully-valid ones.  This avoids possibly choosing the same
      name as some concurrent <command>CREATE INDEX</command> did,
      when that command is still in process of filling its index, or is
      done but is part of a not-yet-committed transaction.  There's still
      a window for trouble, but it's only as long as the time needed to
      validate a new index's parameters and insert
      its <structname>pg_class</structname> row.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master Release: REL_18_BR [661643ded] 2025-06-25 10:03:46 +0900
Branch: REL_17_STABLE [2e0b5d252] 2025-06-25 10:03:50 +0900
Branch: REL_16_STABLE [d187cabdd] 2025-06-25 10:03:52 +0900
Branch: REL_15_STABLE [354944663] 2025-06-25 10:03:53 +0900
Branch: REL_14_STABLE [c079ba3fc] 2025-06-25 10:03:54 +0900
Branch: REL_13_STABLE [65c3223f9] 2025-06-25 10:03:56 +0900
-->
     <para>
      Prevent usage of incorrect <command>VACUUM</command> options in some
      cases where multiple tables are vacuumed in a single command (Nathan
      Bossart, Michael Paquier)
      <ulink url="&commit_baseurl;65c3223f9">&sect;</ulink>
     </para>

     <para>
      The <literal>TRUNCATE</literal> and <literal>INDEX_CLEANUP</literal>
      options of one table could be applied to others.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master Release: REL_18_BR [d46911e58] 2025-05-28 08:58:40 +0900
Branch: REL_17_STABLE [e3ffc3e91] 2025-05-28 08:59:22 +0900
Branch: REL_16_STABLE [e9e535d61] 2025-05-28 08:59:24 +0900
Branch: REL_15_STABLE [b3e99115e] 2025-05-28 08:59:25 +0900
Branch: REL_14_STABLE [1fe15d25e] 2025-05-28 08:59:27 +0900
Branch: REL_13_STABLE [9481d1614] 2025-05-28 08:59:28 +0900
Branch: master Release: REL_18_BR [4fbb46f61] 2025-05-28 09:43:31 +0900
Branch: REL_17_STABLE [a3c6d92f3] 2025-05-28 09:43:45 +0900
Branch: REL_16_STABLE [52d08620e] 2025-05-28 09:43:46 +0900
Branch: REL_15_STABLE [4dc642e75] 2025-05-28 09:43:48 +0900
Branch: REL_14_STABLE [0c09922c0] 2025-05-28 09:43:50 +0900
Branch: REL_13_STABLE [31ee5ec69] 2025-05-28 09:43:51 +0900
-->
     <para>
      Fix processing of character classes within <literal>SIMILAR
      TO</literal> regular expressions (Laurenz Albe)
      <ulink url="&commit_baseurl;9481d1614">&sect;</ulink>
      <ulink url="&commit_baseurl;31ee5ec69">&sect;</ulink>
     </para>

     <para>
      The code that translates <literal>SIMILAR TO</literal> pattern
      matching expressions to POSIX-style regular expressions did not
      consider that square brackets can be nested.  For example, in a
      pattern like <literal>[[:alpha:]%_]</literal>, the code treated
      the <literal>%</literal> and <literal>_</literal> characters as
      metacharacters when they should be literals.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master Release: REL_18_BR [29f7ce6fe] 2025-05-19 18:50:26 +0300
Branch: REL_17_STABLE [54c05292b] 2025-05-19 18:50:47 +0300
Branch: REL_16_STABLE [92a9ba3b9] 2025-05-19 18:50:50 +0300
Branch: REL_15_STABLE [72fe74ca5] 2025-05-19 18:50:52 +0300
Branch: REL_14_STABLE [0420b24fe] 2025-05-19 18:50:54 +0300
Branch: REL_13_STABLE [7ee00918f] 2025-05-19 18:49:34 +0300
Branch: master Release: REL_18_BR [cbf53e2b8] 2025-05-20 10:39:14 +0300
Branch: REL_17_STABLE [a4da7b0cf] 2025-05-20 10:41:20 +0300
Branch: REL_16_STABLE [558ea446a] 2025-05-20 10:41:50 +0300
-->
     <para>
      When deparsing queries, always add parentheses around the expression
      in <literal>FETCH FIRST <replaceable>expression</replaceable> ROWS
      WITH TIES</literal> clauses (Heikki Linnakangas)
      <ulink url="&commit_baseurl;7ee00918f">&sect;</ulink>
     </para>

     <para>
      This avoids some cases where the deparsed result wasn't
      syntactically valid.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
Branch: REL_18_STABLE [bae507821] 2025-07-27 15:10:02 +0300
Branch: REL_17_STABLE [13559de95] 2025-07-27 15:10:24 +0300
Branch: REL_16_STABLE [f0cdc2afd] 2025-07-27 15:10:29 +0300
Branch: REL_15_STABLE [b248a3ba4] 2025-07-27 15:10:29 +0300
Branch: REL_14_STABLE [50026136c] 2025-07-27 15:10:31 +0300
Branch: REL_13_STABLE [f32a47161] 2025-07-27 15:10:32 +0300
Branch: master [466c5435f] 2025-08-07 14:29:02 +0300
Branch: REL_18_STABLE [5cfbff48a] 2025-08-07 14:31:18 +0300
Branch: REL_17_STABLE [605890034] 2025-08-07 14:59:54 +0300
Branch: REL_16_STABLE [2ac50f118] 2025-08-07 14:31:23 +0300
Branch: REL_15_STABLE [73f897ba5] 2025-08-07 14:31:24 +0300
Branch: REL_14_STABLE [c5d66fc12] 2025-08-07 14:31:25 +0300
Branch: REL_13_STABLE [7f872ae70] 2025-08-07 14:31:26 +0300
-->
     <para>
      Limit the checkpointer process's fsync request queue size (Alexander
      Korotkov, Xuneng Zhou)
      <ulink url="&commit_baseurl;f32a47161">&sect;</ulink>
      <ulink url="&commit_baseurl;7f872ae70">&sect;</ulink>
     </para>

     <para>
      With very large <varname>shared_buffers</varname> settings, it was
      possible for the checkpointer to attempt to allocate more than 1GB
      for fsync requests, leading to failure and an infinite loop.  Clamp
      the queue size to prevent this scenario.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
Branch: master [d3917d8f1] 2025-07-19 13:45:51 +0300
Branch: REL_18_STABLE [5449d5b7a] 2025-07-19 13:44:30 +0300
Branch: REL_17_STABLE [c9f4e7520] 2025-07-20 01:29:14 +0300
Branch: REL_16_STABLE [b485e1c89] 2025-07-19 13:46:02 +0300
Branch: REL_15_STABLE [9f270f48f] 2025-07-19 13:46:03 +0300
Branch: REL_14_STABLE [bedfdb85b] 2025-07-19 14:13:41 +0300
Branch: REL_13_STABLE [762f352ca] 2025-07-19 14:13:58 +0300
-->
     <para>
      Avoid infinite wait in logical decoding when reading a
      partially-written WAL record (Vignesh C)
      <ulink url="&commit_baseurl;762f352ca">&sect;</ulink>
     </para>

     <para>
      If the server crashes after writing the first part of a WAL record
      that would span multiple pages, subsequent logical decoding of the
      WAL stream would wait for data to arrive on the next WAL page.
      That might never happen if the server is now idle.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [64840e462] 2025-07-11 18:50:13 -0400
Branch: REL_18_STABLE [ccacaf4fa] 2025-07-11 18:50:13 -0400
Branch: REL_17_STABLE [50959f96e] 2025-07-11 18:50:13 -0400
Branch: REL_16_STABLE [53a936b61] 2025-07-11 18:50:13 -0400
Branch: REL_15_STABLE [de73cb3ed] 2025-07-11 18:50:13 -0400
Branch: REL_14_STABLE [ac8cdb249] 2025-07-11 18:50:13 -0400
Branch: REL_13_STABLE [093d3d745] 2025-07-11 18:50:13 -0400
-->
     <para>
      Fix inconsistent quoting of role names in ACL strings (Tom Lane)
      <ulink url="&commit_baseurl;093d3d745">&sect;</ulink>
     </para>

     <para>
      The previous quoting rule was locale-sensitive, which could lead to
      portability problems when transferring <type>aclitem</type> values
      across installations.  (<application>pg_dump</application> does not
      do that, but other tools might.)  To ensure consistency, always quote
      non-ASCII characters in <type>aclitem</type> output; but to preserve
      backward compatibility, never require that they be quoted
      during <type>aclitem</type> input.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_18_BR [aa87f69c0] 2025-06-02 15:22:44 -0400
Branch: REL_17_STABLE [d4046125d] 2025-06-02 15:22:44 -0400
Branch: REL_16_STABLE [ab758ec4d] 2025-06-02 15:22:44 -0400
Branch: REL_15_STABLE [e76097124] 2025-06-02 15:22:44 -0400
Branch: REL_14_STABLE [eb4234647] 2025-06-02 15:22:45 -0400
Branch: REL_13_STABLE [cd31eaaeb] 2025-06-02 15:22:45 -0400
-->
     <para>
      Reject equal signs (<literal>=</literal>) in the names of relation
      options and foreign-data options (Tom Lane)
      <ulink url="&commit_baseurl;cd31eaaeb">&sect;</ulink>
     </para>

     <para>
      There's no evident use-case for option names like this, and allowing
      them creates ambiguity in the stored representation.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Geoghegan <pg@bowt.ie>
Branch: master Release: REL_18_BR [7c319f549] 2025-06-11 09:17:35 -0400
Branch: REL_17_STABLE [40aa5ddea] 2025-06-11 09:17:33 -0400
Branch: REL_16_STABLE [c7f25feb3] 2025-06-11 09:17:31 -0400
Branch: REL_15_STABLE [d2ec67109] 2025-06-11 09:17:29 -0400
Branch: REL_14_STABLE [7c7c0a77d] 2025-06-11 09:17:27 -0400
Branch: REL_13_STABLE [38c8d2987] 2025-06-11 09:17:25 -0400
-->
     <para>
      Avoid a rare scenario where a btree index scan could mark the wrong
      index entries as dead (Peter Geoghegan)
      <ulink url="&commit_baseurl;38c8d2987">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Masahiko Sawada <msawada@postgresql.org>
Branch: master Release: REL_18_BR [d87d07b7a] 2025-06-16 17:36:01 -0700
Branch: REL_17_STABLE [45c357e0e] 2025-06-16 17:35:58 -0700
Branch: REL_16_STABLE [b2ae07720] 2025-06-16 17:35:55 -0700
Branch: REL_15_STABLE [fc0fb77c5] 2025-06-16 17:35:53 -0700
Branch: REL_14_STABLE [983b36362] 2025-06-16 17:35:50 -0700
Branch: REL_13_STABLE [1230be12f] 2025-06-16 17:35:48 -0700
Branch: REL_13_STABLE [87819f766] 2025-06-24 07:07:40 -0700
-->
     <para>
      Avoid re-distributing cache invalidation messages from other
      transactions during logical replication (vignesh C)
      <ulink url="&commit_baseurl;1230be12f">&sect;</ulink>
      <ulink url="&commit_baseurl;87819f766">&sect;</ulink>
     </para>

     <para>
      Our previous round of minor releases included a bug fix to ensure
      that replication receiver processes would respond to cross-process
      cache invalidation messages, preventing them from using stale
      catalog data while performing replication updates.  However, the fix
      unintentionally made them also redistribute those messages again,
      leading to an exponential increase in the number of invalidation
      messages, which would often end in a memory allocation failure.
      Fix by not redistributing received messages.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
Branch: REL_17_STABLE [2090edc6f] 2025-06-14 03:52:45 +0300
Branch: REL_16_STABLE [cea8f2c3e] 2025-06-14 03:53:18 +0300
Branch: REL_15_STABLE [dd9bc1a17] 2025-06-14 04:15:04 +0300
Branch: REL_14_STABLE [e2832bd96] 2025-06-14 04:15:24 +0300
Branch: REL_13_STABLE [dd3df0b85] 2025-06-14 04:15:29 +0300
-->
     <para>
      Avoid premature removal of old WAL during checkpoints (Vitaly Davydov)
      <ulink url="&commit_baseurl;dd3df0b85">&sect;</ulink>
     </para>

     <para>
      If a replication slot's restart point is advanced while a checkpoint
      is in progress, no-longer-needed WAL segments could get removed too
      soon, leading to recovery failure if the database crashes
      immediately afterwards.  Fix by keeping them for one additional
      checkpoint cycle.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master Release: REL_18_BR [ad5eaf390] 2025-05-19 12:13:06 +0530
Branch: REL_17_STABLE [7318f241d] 2025-05-19 11:55:55 +0530
Branch: REL_16_STABLE [c0f51fde5] 2025-05-19 11:41:22 +0530
Branch: REL_15_STABLE [9d1a62359] 2025-05-19 11:28:19 +0530
Branch: REL_14_STABLE [e68459489] 2025-05-19 11:15:09 +0530
Branch: REL_13_STABLE [e323d9df0] 2025-05-19 11:04:39 +0530
-->
     <para>
      Never move a replication slot's confirmed-flush position backwards
      (Shveta Malik)
      <ulink url="&commit_baseurl;e323d9df0">&sect;</ulink>
     </para>

     <para>
      In some cases a replication client could acknowledge an LSN that's
      past what it has stored persistently, and then perhaps send an older
      LSN after a restart.  We consider this not-a-bug so long as the
      client did not have anything it needed to do for the WAL between the
      two points.  However, we should not re-send that WAL for fear of
      data duplication, so make sure we always believe the latest
      confirmed LSN for a given slot.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master Release: REL_18_BR [961553daf] 2025-05-31 00:08:40 +0900
Branch: REL_17_STABLE [24c5ad5be] 2025-05-31 00:14:07 +0900
Branch: REL_16_STABLE [63fa7caa9] 2025-05-31 00:14:14 +0900
Branch: REL_15_STABLE [405cca9da] 2025-05-31 00:14:22 +0900
Branch: REL_14_STABLE [9130d8eee] 2025-05-31 00:14:29 +0900
Branch: REL_13_STABLE [706344f06] 2025-05-31 00:14:35 +0900
-->
     <para>
      Allow waiting for a transaction on a standby server to be
      interrupted (Kevin K Biju)
      <ulink url="&commit_baseurl;706344f06">&sect;</ulink>
     </para>

     <para>
      Creation of a replication slot on a standby server may require waiting
      for some active transaction(s) to finish on the primary and then be
      replayed on the standby.  Since that could be an indefinite wait,
      it's desirable to allow the operation to be cancelled, but there was
      no check for query cancel in the loop.
     </para>
    </listitem>

    <listitem>
<!--
Author: Nathan Bossart <nathan@postgresql.org>
Branch: master Release: REL_18_BR [706054b11] 2025-05-30 15:17:28 -0500
Branch: REL_17_STABLE [fe8ea7a2a] 2025-05-30 15:17:28 -0500
Branch: REL_16_STABLE [24135398f] 2025-05-30 15:17:28 -0500
Branch: REL_15_STABLE [ddfcfb7ce] 2025-05-30 15:17:28 -0500
Branch: REL_14_STABLE [b65be6ef0] 2025-05-30 15:17:28 -0500
Branch: REL_13_STABLE [b7ba2c030] 2025-05-30 15:17:28 -0500
-->
     <para>
      Fix some places that might try to fetch toasted fields of system
      catalogs without any snapshot (Nathan Bossart)
      <ulink url="&commit_baseurl;b7ba2c030">&sect;</ulink>
     </para>

     <para>
      This could result in an assertion failure or <quote>cannot fetch
      toast data without an active snapshot</quote> error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_18_BR [8319e5cb5] 2025-06-29 13:56:03 -0400
Branch: REL_17_STABLE [bbfcbc4cd] 2025-06-29 13:56:03 -0400
Branch: REL_16_STABLE [c15798cf9] 2025-06-29 13:56:03 -0400
Branch: REL_15_STABLE [614ffb26d] 2025-06-29 13:56:03 -0400
Branch: REL_14_STABLE [25cab4473] 2025-06-29 13:56:03 -0400
Branch: REL_13_STABLE [13f1e9f26] 2025-06-29 13:56:03 -0400
Branch: master [a10f21e6c] 2025-07-03 13:46:07 -0400
Branch: REL_18_STABLE [3d7a96871] 2025-07-03 13:46:07 -0400
Branch: REL_17_STABLE [6d4395b40] 2025-07-03 13:46:07 -0400
Branch: REL_16_STABLE [d36980b71] 2025-07-03 13:46:07 -0400
Branch: REL_15_STABLE [e6dd6e6ee] 2025-07-03 13:46:07 -0400
Branch: REL_14_STABLE [e902f8181] 2025-07-03 13:46:07 -0400
Branch: REL_13_STABLE [f9ba071cc] 2025-07-03 13:46:07 -0400
-->
     <para>
      Avoid assertion failure during cross-table constraint updates
      (Tom Lane, Jian He)
      <ulink url="&commit_baseurl;13f1e9f26">&sect;</ulink>
      <ulink url="&commit_baseurl;f9ba071cc">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Álvaro Herrera <alvherre@kurilemu.de>
Branch: master [b8926a5b4] 2025-07-17 17:40:22 +0200
Branch: REL_18_STABLE [e0d3f3cfb] 2025-07-17 17:40:22 +0200
Branch: REL_17_STABLE [0c466f5e0] 2025-07-17 17:40:22 +0200
Branch: REL_16_STABLE [4871c1e9c] 2025-07-17 17:40:22 +0200
Branch: REL_15_STABLE [c2720ac60] 2025-07-17 17:40:22 +0200
Branch: REL_14_STABLE [b9a896828] 2025-07-17 17:40:22 +0200
Branch: REL_13_STABLE [43cd85962] 2025-07-17 17:40:22 +0200
-->
     <para>
      Remove faulty assertion that a command tag must have been determined
      by the end of <function>PortalRunMulti()</function> (Álvaro Herrera)
      <ulink url="&commit_baseurl;43cd85962">&sect;</ulink>
     </para>

     <para>
      This failed in edge cases such as an empty prepared statement.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [87b05fdc7] 2025-07-07 14:33:20 -0400
Branch: REL_18_STABLE [440c5ee20] 2025-07-07 14:33:34 -0400
Branch: REL_17_STABLE [a553a2289] 2025-07-07 14:33:47 -0400
Branch: REL_16_STABLE [3bbc1c4a7] 2025-07-07 14:33:56 -0400
Branch: REL_15_STABLE [c65c36ab5] 2025-07-07 14:34:04 -0400
Branch: REL_14_STABLE [602c91cf2] 2025-07-07 14:34:12 -0400
Branch: REL_13_STABLE [ae693c0bf] 2025-07-07 14:34:19 -0400
-->
     <para>
      Restore the ability to run PL/pgSQL expressions in parallel
      (Dipesh Dhameliya)
      <ulink url="&commit_baseurl;ae693c0bf">&sect;</ulink>
     </para>

     <para>
      PL/pgSQL's notion of an <quote>expression</quote> is very broad,
      encompassing any SQL <command>SELECT</command> query that returns a
      single column and no more than one row.  So there are cases, for
      example evaluation of an aggregate function, where the query
      involves significant work and it'd be useful to run it with parallel
      workers.  This used to be possible, but a previous bug fix
      unintentionally disabled it.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_18_BR [c6f7f11d8] 2025-06-01 14:48:35 -0400
Branch: REL_17_STABLE [7559a16e2] 2025-06-01 14:48:35 -0400
Branch: REL_16_STABLE [5c7fd5976] 2025-06-01 14:48:35 -0400
Branch: REL_15_STABLE [b56a92651] 2025-06-01 14:48:35 -0400
Branch: REL_14_STABLE [31a3a15fa] 2025-06-01 14:48:35 -0400
Branch: REL_13_STABLE [1c78d5553] 2025-06-01 14:48:35 -0400
Branch: master Release: REL_18_BR [4672b6223] 2025-06-01 14:55:24 -0400
Branch: REL_17_STABLE [6f724fcf8] 2025-06-01 14:55:24 -0400
Branch: REL_16_STABLE [ecc8fd2b7] 2025-06-01 14:55:24 -0400
Branch: REL_15_STABLE [b898bb2a7] 2025-06-01 14:55:24 -0400
Branch: REL_14_STABLE [d4556f592] 2025-06-01 14:55:24 -0400
Branch: REL_13_STABLE [93aca1246] 2025-06-01 14:55:24 -0400
-->
     <para>
      Fix edge-case resource leaks in PL/Python error reporting (Tom Lane)
      <ulink url="&commit_baseurl;1c78d5553">&sect;</ulink>
      <ulink url="&commit_baseurl;93aca1246">&sect;</ulink>
     </para>

     <para>
      An out-of-memory failure while reporting an error from Python could
      result in failure to drop reference counts on Python objects,
      leading to session-lifespan memory leakage.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [daf9bdc47] 2025-07-17 12:46:57 -0400
Branch: REL_18_STABLE [bfa9b25c9] 2025-07-17 12:46:57 -0400
Branch: REL_17_STABLE [3f10d2b66] 2025-07-17 12:46:58 -0400
Branch: REL_16_STABLE [009c20a3d] 2025-07-17 12:46:58 -0400
Branch: REL_15_STABLE [a372a64db] 2025-07-17 12:46:58 -0400
Branch: REL_14_STABLE [d5cba7746] 2025-07-17 12:46:59 -0400
Branch: REL_13_STABLE [9dcd1aa81] 2025-07-17 12:46:59 -0400
-->
     <para>
      Fix <application>libpq</application>'s <function>PQport()</function>
      function to never return NULL unless the passed connection is NULL
      (Daniele Varrazzo)
      <ulink url="&commit_baseurl;9dcd1aa81">&sect;</ulink>
     </para>

     <para>
      This is the documented behavior, but
      recent <application>libpq</application> versions would return NULL
      in some cases where the user had not provided a port specification.
      Revert to our historical behavior of returning an empty string in
      such cases.  (v18 and later will return the compiled-in default port
      number, typically <literal>"5432"</literal>, instead.)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_18_BR [d98cefe11] 2025-05-30 12:55:15 -0400
Branch: REL_17_STABLE [8b0aa7a6b] 2025-05-30 12:55:15 -0400
Branch: REL_16_STABLE [ca70ee6ed] 2025-05-30 12:55:15 -0400
Branch: REL_15_STABLE [39b1d1907] 2025-05-30 12:55:15 -0400
Branch: REL_14_STABLE [a7da7914c] 2025-05-30 12:55:15 -0400
Branch: REL_13_STABLE [c81cdffa1] 2025-05-30 12:55:15 -0400
-->
     <para>
      Avoid failure when GSSAPI authentication requires packets larger
      than 16kB (Jacob Champion, Tom Lane)
      <ulink url="&commit_baseurl;c81cdffa1">&sect;</ulink>
     </para>

     <para>
      Larger authentication packets are needed for Active Directory users
      who belong to many AD groups.  This limitation manifested in
      connection failures with unintelligible error messages,
      typically <quote>GSSAPI context establishment error: The routine
      must be called again to complete its function: Unknown
      error</quote>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_18_BR [137935bd1] 2025-06-10 18:39:34 -0400
Branch: REL_17_STABLE [30e0d9ee9] 2025-06-10 18:39:34 -0400
Branch: REL_16_STABLE [3f37400cf] 2025-06-10 18:39:34 -0400
Branch: REL_15_STABLE [6a4d93eda] 2025-06-10 18:39:34 -0400
Branch: REL_14_STABLE [0703c9385] 2025-06-10 18:39:34 -0400
Branch: REL_13_STABLE [f09fea386] 2025-06-10 18:39:34 -0400
-->
     <para>
      Fix timing-dependent failures in SSL and GSSAPI data transmission
      (Tom Lane)
      <ulink url="&commit_baseurl;f09fea386">&sect;</ulink>
     </para>

     <para>
      When using SSL or GSSAPI encryption in non-blocking
      mode, <application>libpq</application> sometimes failed
      with <quote>SSL error: bad length</quote> or <quote>GSSAPI caller
      failed to retransmit all data needing to be retried</quote>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [1b8bbee05] 2025-07-22 14:00:00 +0900
Branch: REL_18_STABLE [0ded7615d] 2025-07-22 14:00:04 +0900
Branch: REL_17_STABLE [2805e1c1e] 2025-07-22 14:00:05 +0900
Branch: REL_16_STABLE [313d3102f] 2025-07-22 14:00:07 +0900
Branch: REL_15_STABLE [0123922f8] 2025-07-22 14:00:08 +0900
Branch: REL_14_STABLE [408fe659a] 2025-07-22 14:00:10 +0900
Branch: REL_13_STABLE [c934d5673] 2025-07-22 14:00:12 +0900
-->
     <para>
      Avoid null-pointer dereference during connection lookup
      in <application>ecpg</application> applications (Aleksander
      Alekseev)
      <ulink url="&commit_baseurl;c934d5673">&sect;</ulink>
     </para>

     <para>
      The case could occur only if the application has some connections
      that are named and some that are not.
     </para>
    </listitem>

    <listitem>
<!--
Author: Álvaro Herrera <alvherre@kurilemu.de>
Branch: master [0858f0f96] 2025-07-16 19:22:53 +0200
Branch: REL_18_STABLE [dca0e9693] 2025-07-16 19:22:53 +0200
Branch: REL_17_STABLE [d07bc7c2b] 2025-07-16 19:22:53 +0200
Branch: REL_16_STABLE [cef998ef8] 2025-07-16 19:22:53 +0200
Branch: REL_15_STABLE [5a261c135] 2025-07-16 19:22:53 +0200
Branch: REL_14_STABLE [e04aca1c4] 2025-07-16 19:22:53 +0200
Branch: REL_13_STABLE [57949cea5] 2025-07-16 19:22:53 +0200
-->
     <para>
      Ensure that <application>pg_dump</application> dumps comments on
      domain constraints in a valid order (Jian He)
      <ulink url="&commit_baseurl;57949cea5">&sect;</ulink>
     </para>

     <para>
      In some cases the comment command could appear before creation of
      the constraint.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [0decd5e89] 2025-07-31 06:37:56 -0700
Branch: REL_18_STABLE [c0ae03384] 2025-07-31 06:37:59 -0700
Branch: REL_17_STABLE [1ca1889ea] 2025-07-31 06:38:00 -0700
Branch: REL_16_STABLE [0ac1581c3] 2025-07-31 06:38:00 -0700
Branch: REL_15_STABLE [22f126da6] 2025-07-31 06:38:01 -0700
Branch: REL_14_STABLE [7ee7c1cd3] 2025-07-31 06:38:02 -0700
Branch: REL_13_STABLE [04bc2c42f] 2025-07-31 06:38:03 -0700
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_18_BR [350e6b8ea] 2024-11-04 13:31:12 -0500
Branch: REL_17_STABLE [5dd4957b2] 2025-07-31 06:38:00 -0700
Branch: REL_16_STABLE [9affed263] 2025-07-31 06:38:00 -0700
Branch: REL_15_STABLE [e99010cbd] 2025-07-31 06:38:01 -0700
Branch: REL_14_STABLE [25388fb2c] 2025-07-31 06:38:02 -0700
Branch: REL_13_STABLE [cc9a62c51] 2025-07-31 06:38:03 -0700
Author: Noah Misch <noah@leadboat.com>
Branch: REL_18_STABLE [0d2734eac] 2025-08-10 13:05:13 -0700
Branch: REL_17_STABLE [28e7252e4] 2025-08-10 13:05:16 -0700
Branch: REL_16_STABLE [216683296] 2025-08-10 13:05:16 -0700
Branch: REL_15_STABLE [70637d7ae] 2025-08-10 13:05:17 -0700
Branch: REL_14_STABLE [7846f4709] 2025-08-10 13:05:17 -0700
Branch: REL_13_STABLE [bc05590c7] 2025-08-10 13:05:17 -0700
-->
     <para>
      Ensure stable sort ordering in <application>pg_dump</application>
      for all types of database objects (Noah Misch, Andreas Karlsson)
      <ulink url="&commit_baseurl;04bc2c42f">&sect;</ulink>
      <ulink url="&commit_baseurl;cc9a62c51">&sect;</ulink>
      <ulink url="&commit_baseurl;bc05590c7">&sect;</ulink>
     </para>

     <para>
      <application>pg_dump</application> sorts objects by their logical
      names before performing dependency-driven reordering.  This sort did
      not account for the full unique key identifying certain object types
      such as rules and constraints, and thus it could produce dissimilar
      sort orders for logically-identical databases.  That made it
      difficult to compare databases by
      diff'ing <application>pg_dump</application> output, so improve the
      logic to ensure stable sort ordering in all cases.
     </para>
    </listitem>

    <listitem>
<!--
Author: Álvaro Herrera <alvherre@kurilemu.de>
Branch: master [f295494d3] 2025-07-04 18:05:43 +0200
Branch: REL_18_STABLE [07da2985d] 2025-07-04 18:05:43 +0200
Branch: REL_17_STABLE [b8b2e6052] 2025-07-04 18:05:43 +0200
Branch: REL_16_STABLE [f63e408e8] 2025-07-04 18:05:43 +0200
Branch: REL_15_STABLE [0f4958685] 2025-07-04 18:05:43 +0200
Branch: REL_14_STABLE [ea3386cc7] 2025-07-04 18:05:43 +0200
Branch: REL_13_STABLE [b0f0e2221] 2025-07-04 18:05:43 +0200
Branch: master [144ad723a] 2025-07-04 21:30:05 +0200
Branch: REL_18_STABLE [1e007722f] 2025-07-04 21:30:05 +0200
Branch: REL_17_STABLE [bcb8d47cd] 2025-07-04 21:30:05 +0200
Branch: REL_16_STABLE [f943e2339] 2025-07-04 21:30:05 +0200
Branch: REL_15_STABLE [bd48455d8] 2025-07-04 21:30:05 +0200
Branch: REL_14_STABLE [94dc2b37b] 2025-07-04 21:30:05 +0200
Branch: REL_13_STABLE [708469281] 2025-07-04 21:30:05 +0200
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [1beda2c3c] 2025-08-07 11:48:43 +0200
Branch: REL_18_STABLE [1084e76f3] 2025-08-07 11:59:14 +0200
Branch: REL_17_STABLE [930e1faec] 2025-08-07 11:59:20 +0200
Branch: REL_16_STABLE [05b367bea] 2025-08-07 11:59:26 +0200
Branch: REL_15_STABLE [63c79a6fc] 2025-08-07 11:59:32 +0200
Branch: REL_14_STABLE [a00eb374c] 2025-08-07 11:59:38 +0200
Branch: REL_13_STABLE [160131033] 2025-08-07 11:59:42 +0200
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: REL_15_STABLE [22d783350] 2025-08-08 00:18:19 +0200
Branch: REL_14_STABLE [f9f6595e3] 2025-08-08 00:18:15 +0200
Branch: REL_13_STABLE [7406a7d82] 2025-08-08 00:18:11 +0200
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: REL_16_STABLE [06f444816] 2025-08-08 00:27:14 +0200
Branch: REL_15_STABLE [a8b31b160] 2025-08-08 00:28:58 +0200
Branch: REL_14_STABLE [ed2bb0cdd] 2025-08-08 00:29:31 +0200
Branch: REL_13_STABLE [de7fd83cd] 2025-08-08 00:29:34 +0200
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: REL_15_STABLE [18d2d8ae4] 2025-08-08 08:47:10 +0200
Branch: REL_14_STABLE [bef2c2a4e] 2025-08-08 08:48:28 +0200
Branch: REL_13_STABLE [095e83d09] 2025-08-08 08:48:36 +0200
-->
     <para>
      In <application>pg_upgrade</application>, check for inconsistent
      inherited not-null constraints (Ali Akbar)
      <ulink url="&commit_baseurl;b0f0e2221">&sect;</ulink>
      <ulink url="&commit_baseurl;708469281">&sect;</ulink>
      <ulink url="&commit_baseurl;160131033">&sect;</ulink>
      <ulink url="&commit_baseurl;7406a7d82">&sect;</ulink>
      <ulink url="&commit_baseurl;de7fd83cd">&sect;</ulink>
      <ulink url="&commit_baseurl;095e83d09">&sect;</ulink>
     </para>

     <para>
      <productname>PostgreSQL</productname> versions before 18 allow an
      inherited column not-null constraint to be dropped.  However, this
      results in a schema that cannot be restored, leading to failure
      in <application>pg_upgrade</application>.  Detect such cases
      during <application>pg_upgrade</application>'s preflight checks to
      allow users to fix them before initiating the upgrade.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [5a6c39b6d] 2025-07-04 15:09:24 +0900
Branch: REL_18_STABLE [29a4b63c6] 2025-07-04 15:10:17 +0900
Branch: REL_17_STABLE [ae20c105f] 2025-07-04 15:10:19 +0900
Branch: REL_16_STABLE [7e7059abf] 2025-07-04 15:10:21 +0900
Branch: REL_15_STABLE [dcbbd4331] 2025-07-04 15:10:22 +0900
Branch: REL_14_STABLE [b61ddcaf4] 2025-07-04 15:10:24 +0900
Branch: REL_13_STABLE [8bca4476f] 2025-07-04 15:10:25 +0900
-->
     <para>
      Avoid assertion failure if <varname>track_commit_timestamp</varname>
      is enabled during <application>initdb</application> (Hayato Kuroda,
      Andy Fan)
      <ulink url="&commit_baseurl;8bca4476f">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_18_BR [470273da0] 2025-05-29 10:39:55 -0400
Branch: REL_17_STABLE [e20b3256a] 2025-05-29 10:39:55 -0400
Branch: REL_16_STABLE [8eef55db1] 2025-05-29 10:39:55 -0400
Branch: REL_15_STABLE [09c9ae8f6] 2025-05-29 10:39:55 -0400
Branch: REL_14_STABLE [2cd2222ca] 2025-05-29 10:39:55 -0400
Branch: REL_13_STABLE [e7d3d4ed4] 2025-05-29 10:39:55 -0400
-->
     <para>
      Avoid possible leak of the open connection
      during <filename>contrib/dblink</filename> connection establishment
      (Tom Lane)
      <ulink url="&commit_baseurl;e7d3d4ed4">&sect;</ulink>
     </para>

     <para>
      In the rare scenario where we hit out-of-memory while inserting the
      new connection object into dblink's hashtable, the open connection
      would be leaked until end of session, leaving an idle session
      sitting on the remote server.
     </para>
    </listitem>

    <listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master Release: REL_18_BR [016e407f4] 2025-06-06 08:18:27 -0400
Branch: REL_17_STABLE [e4b8f925a] 2025-06-06 08:18:26 -0400
Branch: REL_16_STABLE [169429264] 2025-06-06 08:18:23 -0400
Branch: REL_15_STABLE [d59ff3be2] 2025-06-06 08:18:22 -0400
Branch: REL_14_STABLE [a4b9707c4] 2025-06-06 08:18:20 -0400
Branch: REL_13_STABLE [4adbaa36c] 2025-06-06 08:18:15 -0400
-->
     <para>
      Make <filename>contrib/pg_prewarm</filename> cope with very
      large <varname>shared_buffers</varname> settings (Daria Shanina)
      <ulink url="&commit_baseurl;4adbaa36c">&sect;</ulink>
     </para>

     <para>
      Autoprewarm failed with a memory allocation error
      if <varname>shared_buffers</varname> was larger than about 50
      million buffers (400GB).
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master Release: REL_18_BR [35a428f30] 2025-05-29 11:26:03 +0900
Branch: REL_17_STABLE [290e8ab32] 2025-05-29 11:26:23 +0900
Branch: REL_16_STABLE [7e8b44f4e] 2025-05-29 11:26:27 +0900
Branch: REL_15_STABLE [130300a15] 2025-05-29 11:26:29 +0900
Branch: REL_14_STABLE [8a1459f62] 2025-05-29 11:26:31 +0900
Branch: REL_13_STABLE [3c03b8cd7] 2025-05-29 11:26:34 +0900
-->
     <para>
      In <filename>contrib/pg_stat_statements</filename>, avoid leaving
      gaps in the set of parameter numbers used in a normalized query
      (Sami Imseih)
      <ulink url="&commit_baseurl;3c03b8cd7">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_18_BR [232d8caea] 2025-05-30 13:45:41 -0400
Branch: REL_17_STABLE [9339c85af] 2025-05-30 13:45:41 -0400
Branch: REL_16_STABLE [2b92dc4ee] 2025-05-30 13:45:41 -0400
Branch: REL_15_STABLE [3c31594f5] 2025-05-30 13:45:41 -0400
Branch: REL_14_STABLE [4a07c0961] 2025-05-30 13:45:41 -0400
Branch: REL_13_STABLE [271cb7eaa] 2025-05-30 13:45:41 -0400
-->
     <para>
      Fix memory leakage in <filename>contrib/postgres_fdw</filename>'s
      DirectModify methods (Tom Lane)
      <ulink url="&commit_baseurl;271cb7eaa">&sect;</ulink>
     </para>

     <para>
      The <structname>PGresult</structname> holding the results of the
      remote modify command would be leaked for the rest of the session if
      the query fails between invocations of the DirectModify methods,
      which could happen when there's <literal>RETURNING</literal> data to
      process.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [4300d8b6a] 2025-07-29 15:17:40 -0400
Branch: REL_18_STABLE [8e5e3ff55] 2025-07-29 15:17:40 -0400
Branch: REL_17_STABLE [a644f5fc6] 2025-07-29 15:17:41 -0400
Branch: REL_16_STABLE [bbc20c8a9] 2025-07-29 15:17:41 -0400
Branch: REL_15_STABLE [19857437b] 2025-07-29 15:17:41 -0400
Branch: REL_14_STABLE [2dee95bd0] 2025-07-29 15:17:41 -0400
Branch: REL_13_STABLE [c5bd803e5] 2025-07-29 15:17:41 -0400
-->
     <para>
      Ensure that directories listed
      in <application>configure</application>'s
      <option>--with-includes</option>
      and <option>--with-libraries</option> options are searched before
      system-supplied directories (Tom Lane)
      <ulink url="&commit_baseurl;c5bd803e5">&sect;</ulink>
     </para>

     <para>
      A common reason for using these options is to allow a user-built
      version of some library to override the system-supplied version.
      However, that failed to work in some environments because of
      careless ordering of switches in the commands issued by the makefiles.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [1a5212775] 2025-07-30 11:55:42 +0900
Branch: REL_18_STABLE [cd2d52cc6] 2025-07-30 11:55:46 +0900
Branch: REL_17_STABLE [8de56323c] 2025-07-30 11:55:47 +0900
Branch: REL_16_STABLE [c1984be23] 2025-07-30 11:55:49 +0900
Branch: REL_15_STABLE [d6ffc43f9] 2025-07-30 11:55:51 +0900
Branch: REL_14_STABLE [60953d4cb] 2025-07-30 11:55:53 +0900
Branch: REL_13_STABLE [612f5b806] 2025-07-30 11:55:54 +0900
-->
     <para>
      Fix <application>configure</application>'s checks
      for <function>__cpuid()</function>
      and <function>__cpuidex()</function> (Lukas Fittl, Michael Paquier)
      <ulink url="&commit_baseurl;612f5b806">&sect;</ulink>
     </para>

     <para>
      <application>configure</application> failed to detect these
      Windows-specific functions, so that they would not be used,
      leading to slower-than-necessary CRC computations since the
      availability of hardware instructions could not be verified.
      The practical impact of this error was limited, because production
      builds for Windows typically do not use the Autoconf toolchain.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [e6dfd068e] 2025-07-23 15:44:29 -0400
Branch: REL_18_STABLE [3d039b53a] 2025-07-23 15:44:29 -0400
Branch: REL_17_STABLE [635a85627] 2025-07-23 15:44:29 -0400
Branch: REL_16_STABLE [e4d585455] 2025-07-23 15:44:29 -0400
Branch: REL_15_STABLE [b252ce311] 2025-07-23 15:44:29 -0400
Branch: REL_14_STABLE [868b39a54] 2025-07-23 15:44:29 -0400
Branch: REL_13_STABLE [1ccb3851d] 2025-07-23 15:44:29 -0400
-->
     <para>
      Fix build failure with <option>--with-pam</option> option on
      Solaris-based platforms (Tom Lane)
      <ulink url="&commit_baseurl;1ccb3851d">&sect;</ulink>
     </para>

     <para>
      Solaris is inconsistent with other Unix platforms about the API for
      PAM authentication.  This manifested as an <quote>inconsistent
      pointer</quote> compiler warning, which we never did anything about.
      But as of GCC 14 it's an error not warning by default, so fix it.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [1fd772d19] 2025-07-01 12:40:35 -0400
Branch: REL_18_STABLE [581305a46] 2025-07-01 12:40:35 -0400
Branch: REL_17_STABLE [0991249d7] 2025-07-01 12:40:35 -0400
Branch: REL_16_STABLE [d25d392e8] 2025-07-01 12:40:35 -0400
Branch: master [29213636e] 2025-07-01 12:08:20 -0400
Branch: REL_18_STABLE [45c527662] 2025-07-01 12:08:20 -0400
Branch: REL_17_STABLE [29c54ea7b] 2025-07-01 12:08:20 -0400
Branch: REL_16_STABLE [3a2617e4f] 2025-07-01 12:08:20 -0400
Branch: REL_15_STABLE [0fb496c70] 2025-07-01 12:08:57 -0400
Branch: REL_14_STABLE [71d71ac4d] 2025-07-01 12:08:57 -0400
Branch: REL_13_STABLE [d0a695cf4] 2025-07-01 12:08:58 -0400
-->
     <para>
      Make our code portable to GNU Hurd (Michael Banck, Christoph Berg,
      Samuel Thibault)
      <ulink url="&commit_baseurl;d0a695cf4">&sect;</ulink>
     </para>

     <para>
      Fix assumptions about <literal>IOV_MAX</literal>
      and <literal>O_RDONLY</literal> that don't hold on Hurd.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_18_BR [12eee85e5] 2025-05-18 12:45:55 -0400
Branch: REL_17_STABLE [5355a2400] 2025-05-18 12:45:55 -0400
Branch: REL_16_STABLE [253cf661c] 2025-05-18 12:45:55 -0400
Branch: REL_16_STABLE [4b53cb493] 2025-05-20 10:55:05 -0400
Branch: REL_15_STABLE [00652b3c9] 2025-05-18 12:45:55 -0400
Branch: REL_14_STABLE [a1e0e7076] 2025-05-18 12:45:55 -0400
Branch: REL_13_STABLE [9bc2d37cc] 2025-05-18 12:45:55 -0400
-->
     <para>
      Make our usage of <function>memset_s()</function> conform strictly
      to the C11 standard (Tom Lane)
      <ulink url="&commit_baseurl;9bc2d37cc">&sect;</ulink>
     </para>

     <para>
      This avoids compile failures on some platforms.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [aad1617b7] 2025-07-15 18:11:18 -0400
Branch: REL_18_STABLE [0b6dfce0c] 2025-07-15 18:11:18 -0400
Branch: REL_17_STABLE [5a2139a90] 2025-07-15 18:11:18 -0400
Branch: REL_16_STABLE [5db55e13f] 2025-07-15 18:11:18 -0400
Branch: REL_15_STABLE [f32e45641] 2025-07-15 18:11:18 -0400
Branch: REL_14_STABLE [8254b7e33] 2025-07-15 18:11:18 -0400
Branch: REL_13_STABLE [6c93bf735] 2025-07-15 18:11:18 -0400
-->
     <para>
      Prevent uninitialized-value compiler warnings in JSONB comparison
      code (Tom Lane)
      <ulink url="&commit_baseurl;6c93bf735">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [8aa54aa7e] 2025-07-07 08:53:57 +0900
Branch: REL_18_STABLE [8d1071e7d] 2025-07-07 08:54:30 +0900
Branch: REL_17_STABLE [c911e7802] 2025-07-07 08:54:37 +0900
Branch: REL_16_STABLE [d24a96ce2] 2025-07-07 08:54:39 +0900
Branch: REL_15_STABLE [75c1eb60b] 2025-07-07 08:54:41 +0900
Branch: REL_14_STABLE [ac166b19a] 2025-07-07 08:54:43 +0900
Branch: REL_13_STABLE [e688cfc2b] 2025-07-07 08:54:44 +0900
-->
     <para>
      Avoid deprecation warnings when building
      with <application>libxml2</application> 2.14 and later
      (Michael Paquier)
      <ulink url="&commit_baseurl;e688cfc2b">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: John Naylor <john.naylor@postgresql.org>
Branch: master [ed26c4e25] 2025-07-09 14:20:22 +0700
Branch: master [90bfae9f9] 2025-08-07 17:10:52 +0700
Branch: REL_18_STABLE [dd2926207] 2025-08-07 17:12:44 +0700
Branch: REL_17_STABLE [21ae8fc5f] 2025-08-07 17:13:55 +0700
Branch: REL_16_STABLE [aae9aad19] 2025-08-07 17:14:39 +0700
Branch: REL_15_STABLE [baacfb9e6] 2025-08-07 17:15:09 +0700
Branch: REL_14_STABLE [a4f891b96] 2025-08-07 17:16:00 +0700
Branch: REL_13_STABLE [9560c1ec1] 2025-08-07 17:16:33 +0700
-->
     <para>
      Avoid problems when compiling <filename>pg_locale.h</filename> under
      C++ (John Naylor)
      <ulink url="&commit_baseurl;9560c1ec1">&sect;</ulink>
     </para>

     <para>
      <productname>PostgreSQL</productname> header files generally need to
      be wrapped in <literal>extern "C" { ... }</literal> in order to be
      included in extensions written in C++.  This failed
      for <filename>pg_locale.h</filename> because of its use
      of <application>libicu</application> headers, but we can work around
      that by suppressing C++-only declarations in those headers.  C++
      extensions that want to use <application>libicu</application>'s C++
      APIs can do so by including the <application>libicu</application>
      headers ahead of <filename>pg_locale.h</filename>.
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-21">
  <title>Release 13.21</title>

  <formalpara>
  <title>Release date:</title>
  <para>2025-05-08</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.20.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <para>
   The <productname>PostgreSQL</productname> community will stop
   releasing updates for the 13.X release series in November 2025.
   Users are encouraged to update to a newer release branch soon.
  </para>

  <sect2>
   <title>Migration to Version 13.21</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you have any self-referential foreign key constraints on
    partitioned tables, it may be necessary to recreate those constraints
    to ensure that they are being enforced correctly.  See the second
    changelog entry below.
   </para>

   <para>
    Also, if you are upgrading from a version earlier than 13.17,
    see <xref linkend="release-13-17"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [627acc3ca] 2025-05-05 04:52:04 -0700
Branch: REL_17_STABLE [ec5f89e8a] 2025-05-05 04:52:07 -0700
Branch: REL_16_STABLE [d1264948f] 2025-05-05 04:52:07 -0700
Branch: REL_15_STABLE [44ba3f55f] 2025-05-05 04:52:08 -0700
Branch: REL_14_STABLE [3f2ab7393] 2025-05-05 04:52:08 -0700
Branch: REL_13_STABLE [cbadeaca9] 2025-05-05 04:52:08 -0700
Branch: master [5be213caa] 2025-05-05 04:52:04 -0700
Branch: REL_17_STABLE [617d34908] 2025-05-05 04:52:07 -0700
Branch: REL_16_STABLE [f3bb0b2c4] 2025-05-05 04:52:07 -0700
Branch: REL_15_STABLE [45fe7e08f] 2025-05-05 04:52:08 -0700
Branch: REL_14_STABLE [258cde839] 2025-05-05 04:52:08 -0700
Branch: REL_13_STABLE [7279e5820] 2025-05-05 04:52:08 -0700
-->
     <para>
      Avoid one-byte buffer overread when examining invalidly-encoded
      strings that are claimed to be in GB18030 encoding
      (Noah Misch, Andres Freund)
      <ulink url="&commit_baseurl;cbadeaca9">&sect;</ulink>
      <ulink url="&commit_baseurl;7279e5820">&sect;</ulink>
     </para>

     <para>
      While unlikely, a SIGSEGV crash could occur if an incomplete
      multibyte character appeared at the end of memory.  This was
      possible both in the server and
      in <application>libpq</application>-using applications.
      (CVE-2025-4207)
     </para>
    </listitem>

    <listitem>
<!--
Author: Álvaro Herrera <alvherre@kurilemu.de>
Branch: master [c83a38758] 2025-05-02 21:25:50 +0200
Branch: REL_17_STABLE [f51ae3187] 2025-05-02 21:25:50 +0200
Branch: REL_16_STABLE [1817d62ec] 2025-05-02 21:25:50 +0200
Branch: REL_15_STABLE [6ba979cf5] 2025-05-02 21:25:50 +0200
Branch: REL_14_STABLE [1649d153a] 2025-05-02 21:25:50 +0200
Branch: REL_13_STABLE [b3a9c536d] 2025-05-02 21:25:50 +0200
-->
     <para>
      Handle self-referential foreign keys on partitioned tables correctly
      (Álvaro Herrera)
      <ulink url="&commit_baseurl;b3a9c536d">&sect;</ulink>
     </para>

     <para>
      Creating or attaching partitions failed to make the required catalog
      entries for a foreign-key constraint, if the table referenced by the
      constraint was the same partitioned table.  This resulted in failure
      to enforce the constraint fully.
     </para>

     <para>
      To fix this, you should drop and recreate any self-referential
      foreign keys on partitioned tables, if partitions have been created
      or attached since the constraint was created.  Bear in mind that
      violating rows might already be present, in which case recreating
      the constraint will fail, and you'll need to fix up those rows
      before trying again.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [f4e7756ef] 2025-03-12 11:47:38 -0400
Branch: REL_17_STABLE [ca0830e5a] 2025-03-12 11:47:19 -0400
Branch: REL_16_STABLE [fec43428c] 2025-03-12 11:47:19 -0400
Branch: REL_15_STABLE [ae0be2f0b] 2025-03-12 11:47:19 -0400
Branch: REL_14_STABLE [d3a29ae6a] 2025-03-12 11:47:19 -0400
Branch: REL_13_STABLE [39af32f78] 2025-03-12 11:47:19 -0400
Branch: REL_15_STABLE [317aba70e] 2025-03-12 11:27:59 -0400
Branch: REL_14_STABLE [584f17a90] 2025-03-12 11:28:04 -0400
Branch: REL_13_STABLE [28a7e31d0] 2025-03-12 11:28:11 -0400
Branch: REL_15_STABLE [7713f4592] 2025-03-13 12:13:07 -0400
Branch: REL_14_STABLE [1a20bc946] 2025-03-13 12:13:07 -0400
Branch: REL_13_STABLE [b200180de] 2025-03-13 12:13:07 -0400
-->
     <para>
      Fix unexpected <quote>attribute has wrong type</quote> errors
      in <command>UPDATE</command>, <command>DELETE</command>,
      and <command>MERGE</command> queries that use whole-row table
      references to views or functions in <literal>FROM</literal>
      (Tom Lane)
      <ulink url="&commit_baseurl;39af32f78">&sect;</ulink>
      <ulink url="&commit_baseurl;28a7e31d0">&sect;</ulink>
      <ulink url="&commit_baseurl;b200180de">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [691836405] 2025-04-05 15:01:48 -0400
Branch: REL_17_STABLE [5e7be43f4] 2025-04-05 15:01:33 -0400
Branch: REL_16_STABLE [1980ec2bc] 2025-04-05 15:01:33 -0400
Branch: REL_15_STABLE [ede29a1e4] 2025-04-05 15:01:33 -0400
Branch: REL_14_STABLE [754a3d82d] 2025-04-05 15:01:33 -0400
Branch: REL_13_STABLE [e276b5829] 2025-04-05 15:01:33 -0400
-->
     <para>
      Correctly process references to outer CTE names that appear within
      a <literal>WITH</literal> clause attached to
      an <command>INSERT</command>/<command>UPDATE</command>/<command>DELETE</command>/<command>MERGE</command>
      command that's inside <literal>WITH</literal> (Tom Lane)
      <ulink url="&commit_baseurl;e276b5829">&sect;</ulink>
     </para>

     <para>
      The parser failed to detect disallowed recursion cases, nor did it
      account for such references when sorting CTEs into a usable order.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [4618045be] 2025-03-13 16:07:55 -0400
Branch: REL_17_STABLE [c826cd1b1] 2025-03-13 16:07:55 -0400
Branch: REL_16_STABLE [0405982c7] 2025-03-13 16:07:55 -0400
Branch: REL_15_STABLE [13dd6f772] 2025-03-13 16:07:55 -0400
Branch: REL_14_STABLE [f7ae51312] 2025-03-13 16:07:55 -0400
Branch: REL_13_STABLE [474aee3df] 2025-03-13 16:07:55 -0400
-->
     <para>
      Fix <literal>ARRAY(<replaceable>subquery</replaceable>)</literal>
      and <literal>ARRAY[<replaceable>expression, ...</replaceable>]</literal>
      constructs to produce sane results when the input is of
      type <type>int2vector</type> or <type>oidvector</type> (Tom Lane)
      <ulink url="&commit_baseurl;474aee3df">&sect;</ulink>
     </para>

     <para>
      This patch restores the behavior that existed
      before <productname>PostgreSQL</productname> 9.5: the result is of
      type <type>int2vector[]</type> or <type>oidvector[]</type>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [7fb880102] 2025-03-08 11:24:25 -0500
Branch: REL_17_STABLE [99c01aadf] 2025-03-08 11:24:42 -0500
Branch: REL_16_STABLE [61513da08] 2025-03-08 11:24:47 -0500
Branch: REL_15_STABLE [e2921c0e9] 2025-03-08 11:24:52 -0500
Branch: REL_14_STABLE [da85544ae] 2025-03-08 11:24:57 -0500
Branch: REL_13_STABLE [f1c1bafcd] 2025-03-08 11:25:01 -0500
-->
     <para>
      Fix possible erroneous reports of invalid affixes while parsing
      <application>Ispell</application> dictionaries (Jacob Brazeal)
      <ulink url="&commit_baseurl;f1c1bafcd">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [95f650674] 2025-03-03 12:43:44 -0500
Branch: REL_17_STABLE [d6dd2a02b] 2025-03-03 12:43:29 -0500
Branch: REL_16_STABLE [edc3bccd0] 2025-03-03 12:43:29 -0500
Branch: REL_15_STABLE [1d180931c] 2025-03-03 12:43:29 -0500
Branch: REL_14_STABLE [c75c830e2] 2025-03-03 12:43:29 -0500
Branch: REL_13_STABLE [aac07b562] 2025-03-03 12:43:29 -0500
Branch: master [bd178960c] 2025-04-02 11:13:01 -0400
Branch: REL_17_STABLE [0941aadcd] 2025-04-02 11:13:01 -0400
Branch: REL_16_STABLE [053222a97] 2025-04-02 11:13:01 -0400
Branch: REL_15_STABLE [2d6cfb0cd] 2025-04-02 11:13:01 -0400
Branch: REL_14_STABLE [d31d39cfe] 2025-04-02 11:13:01 -0400
Branch: REL_13_STABLE [dd34cbfce] 2025-04-02 11:13:01 -0400
-->
     <para>
      Fix <literal>ALTER TABLE ADD COLUMN</literal> to correctly handle
      the case of a domain type that has a default
      (Jian He, Tom Lane, Tender Wang)
      <ulink url="&commit_baseurl;aac07b562">&sect;</ulink>
      <ulink url="&commit_baseurl;dd34cbfce">&sect;</ulink>
     </para>

     <para>
      If a domain type has a default, adding a column of that type (without
      any explicit <literal>DEFAULT</literal>
      clause) failed to install the domain's default
      value in existing rows, instead leaving the new column null.
     </para>
    </listitem>

    <listitem>
<!--
Author: Álvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [7bbc46213] 2025-03-04 20:07:30 +0100
Branch: REL_17_STABLE [4e026be5f] 2025-03-04 20:07:30 +0100
Branch: REL_16_STABLE [9ea5fe5b6] 2025-03-04 20:07:30 +0100
Branch: REL_15_STABLE [bf1e2d2db] 2025-03-04 20:07:30 +0100
Branch: REL_14_STABLE [931a1c023] 2025-03-04 20:07:30 +0100
Branch: REL_13_STABLE [0f354e080] 2025-03-04 20:07:30 +0100
-->
     <para>
      Improve the error message for disallowed attempts to alter the
      properties of a foreign key constraint (Álvaro Herrera)
      <ulink url="&commit_baseurl;0f354e080">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [2d5350cfb] 2025-04-20 08:28:48 -0700
Branch: REL_17_STABLE [d0a049987] 2025-04-20 08:28:52 -0700
Branch: REL_16_STABLE [5905e9935] 2025-04-20 08:28:52 -0700
Branch: REL_15_STABLE [e0f53e669] 2025-04-20 08:28:52 -0700
Branch: REL_14_STABLE [a61b67cd0] 2025-04-20 08:28:53 -0700
Branch: REL_13_STABLE [d34b671a6] 2025-04-20 08:28:53 -0700
-->
     <para>
      Avoid error when resetting
      the <structfield>relhassubclass</structfield> flag of a temporary
      table that's marked <literal>ON COMMIT DELETE ROWS</literal>
      (Noah Misch)
      <ulink url="&commit_baseurl;d34b671a6">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [459e7bf8e] 2025-04-02 14:54:20 -0400
Branch: REL_17_STABLE [78cb2466f] 2025-04-02 14:42:03 -0400
Branch: REL_16_STABLE [980727b84] 2025-04-02 14:46:31 -0400
Branch: REL_15_STABLE [77d90d6d6] 2025-04-02 14:50:03 -0400
Branch: REL_14_STABLE [4934d3875] 2025-04-02 14:50:44 -0400
Branch: REL_13_STABLE [b9ec8125d] 2025-04-02 14:50:49 -0400
-->
     <para>
      Disable <quote>skip fetch</quote> optimization in bitmap heap scan
      (Matthias van de Meent)
      <ulink url="&commit_baseurl;b9ec8125d">&sect;</ulink>
     </para>

     <para>
      It turns out that this optimization can result in returning dead
      tuples when a concurrent vacuum marks a page all-visible.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [0f21db36d] 2025-03-06 11:54:31 -0500
Branch: REL_17_STABLE [9094eb25b] 2025-03-06 11:54:27 -0500
Branch: REL_16_STABLE [d52221cf0] 2025-03-06 11:54:27 -0500
Branch: REL_15_STABLE [2d313375c] 2025-03-06 11:54:27 -0500
Branch: REL_14_STABLE [e2a6934a8] 2025-03-06 11:54:27 -0500
Branch: REL_13_STABLE [308d0d443] 2025-03-06 11:54:27 -0500
Branch: master [e708ffe79] 2025-04-12 12:28:02 -0400
Branch: REL_17_STABLE [8c153fcfa] 2025-04-12 12:27:46 -0400
Branch: REL_16_STABLE [4b65b085a] 2025-04-12 12:27:46 -0400
Branch: REL_15_STABLE [9a8c16aec] 2025-04-12 12:27:46 -0400
Branch: REL_14_STABLE [1b47a112a] 2025-04-12 12:27:46 -0400
Branch: REL_13_STABLE [c7597a1d3] 2025-04-12 12:27:46 -0400
-->
     <para>
      Fix performance issues in GIN index search startup when there are
      many search keys (Tom Lane, Vinod Sridharan)
      <ulink url="&commit_baseurl;308d0d443">&sect;</ulink>
      <ulink url="&commit_baseurl;c7597a1d3">&sect;</ulink>
     </para>

     <para>
      An indexable clause with many keys (for example, <literal>jsonbcol
      ?| array[...]</literal> with tens of thousands of array elements)
      took O(N<superscript>2</superscript>) time to start up, and was
      uncancelable for that interval too.
     </para>
    </listitem>

    <listitem>
<!--
Author: Álvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [17ce344f8] 2025-03-11 12:50:35 +0100
Branch: REL_17_STABLE [ade976f8b] 2025-03-11 12:50:35 +0100
Branch: REL_16_STABLE [e0d8f49a3] 2025-03-11 12:50:35 +0100
Branch: REL_15_STABLE [5d8c58800] 2025-03-11 12:50:35 +0100
Branch: REL_14_STABLE [5144e1f8f] 2025-03-11 12:50:35 +0100
Branch: REL_13_STABLE [f5b4a0b49] 2025-03-11 12:50:35 +0100
-->
     <para>
      Detect missing support procedures in a BRIN index operator class,
      and report an error instead of crashing (Álvaro Herrera)
      <ulink url="&commit_baseurl;f5b4a0b49">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [2e5779083] 2025-04-11 10:00:21 +0900
Branch: REL_17_STABLE [3339847cc] 2025-04-11 10:02:15 +0900
Branch: REL_16_STABLE [c922ae2c4] 2025-04-11 10:02:17 +0900
Branch: REL_15_STABLE [ec59500a1] 2025-04-11 10:02:18 +0900
Branch: REL_14_STABLE [873aff945] 2025-04-11 10:02:20 +0900
Branch: REL_13_STABLE [e2f42f812] 2025-04-11 10:02:21 +0900
-->
     <para>
      Fix race condition in handling
      of <varname>synchronous_standby_names</varname> immediately after
      startup (Melnikov Maksim, Michael Paquier)
      <ulink url="&commit_baseurl;e2f42f812">&sect;</ulink>
     </para>

     <para>
      For a short period after system startup, backends might fail to wait
      for synchronous commit even
      though <varname>synchronous_standby_names</varname> is enabled.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [00d61a08c] 2025-03-01 14:22:56 -0500
Branch: REL_17_STABLE [d69c78108] 2025-03-01 14:22:56 -0500
Branch: REL_16_STABLE [5c64ece8a] 2025-03-01 14:22:56 -0500
Branch: REL_15_STABLE [c7303f01c] 2025-03-01 14:22:56 -0500
Branch: REL_14_STABLE [76fbb38ef] 2025-03-01 14:22:56 -0500
Branch: REL_13_STABLE [ebe919e95] 2025-03-01 14:22:56 -0500
-->
     <para>
      Fix <function>pg_strtof()</function> to not crash with null endptr
      (Alexander Lakhin, Tom Lane)
      <ulink url="&commit_baseurl;ebe919e95">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [b464e51ab] 2025-02-18 21:13:54 -0500
Branch: REL_17_STABLE [7edd2cbc5] 2025-02-18 21:23:59 -0500
Branch: REL_16_STABLE [c0c364fa1] 2025-02-18 21:23:59 -0500
Branch: REL_15_STABLE [9c46d902b] 2025-02-18 21:23:59 -0500
Branch: REL_14_STABLE [8388cae55] 2025-02-18 21:24:12 -0500
Branch: REL_13_STABLE [197427fb3] 2025-02-18 21:24:12 -0500
-->
     <para>
      Avoid crash when a Snowball stemmer encounters an out-of-memory
      condition (Maksim Korotkov)
      <ulink url="&commit_baseurl;197427fb3">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: REL_14_STABLE [3635a0a35] 2025-04-06 15:40:44 +0900
Branch: REL_13_STABLE [69a498eb6] 2025-04-06 15:42:30 +0900
Branch: REL_14_STABLE [014a50800] 2025-04-06 15:37:53 +0900
Branch: REL_13_STABLE [a5b0c06da] 2025-04-06 15:40:15 +0900
Branch: REL_14_STABLE [675b771ca] 2025-04-06 15:26:23 +0900
Branch: REL_13_STABLE [cbed472a9] 2025-04-06 15:27:34 +0900
Branch: REL_14_STABLE [b494640e8] 2025-04-06 14:46:31 +0900
Branch: REL_13_STABLE [d0b6acaf0] 2025-04-06 14:48:01 +0900
Branch: REL_14_STABLE [8967dddf0] 2025-04-06 14:36:08 +0900
Branch: REL_13_STABLE [20e5ef3ca] 2025-04-06 14:38:34 +0900
Branch: REL_14_STABLE [6b168c129] 2025-04-06 14:12:12 +0900
Branch: REL_13_STABLE [df8ec9634] 2025-04-06 14:22:46 +0900
Author: Michael Paquier <michael@paquier.xyz>
Branch: REL_14_STABLE [47d2d2982] 2025-04-06 15:14:52 +0900
Branch: REL_13_STABLE [e77d9cd4f] 2025-04-06 15:15:13 +0900
-->
     <para>
      Skip WAL recycling and preallocation during archive recovery, to
      avoid corruption of WAL files that were restored from the archive
      (Noah Misch, Arun Thirupathi)
      <ulink url="&commit_baseurl;69a498eb6">&sect;</ulink>
      <ulink url="&commit_baseurl;a5b0c06da">&sect;</ulink>
      <ulink url="&commit_baseurl;cbed472a9">&sect;</ulink>
      <ulink url="&commit_baseurl;d0b6acaf0">&sect;</ulink>
      <ulink url="&commit_baseurl;20e5ef3ca">&sect;</ulink>
      <ulink url="&commit_baseurl;df8ec9634">&sect;</ulink>
      <ulink url="&commit_baseurl;e77d9cd4f">&sect;</ulink>
     </para>

     <para>
      This change back-patches v15-era fixes that were considered largely
      cosmetic at the time, but turn out to prevent data corruption in the
      wake of subsequent fixes.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [aaf9e95e8] 2025-04-28 11:35:54 +0530
Branch: REL_17_STABLE [36148b22e] 2025-04-28 11:22:07 +0530
Branch: REL_16_STABLE [21a7caeeb] 2025-04-28 11:09:27 +0530
Branch: REL_15_STABLE [f6429bd7d] 2025-04-28 10:56:24 +0530
Branch: REL_14_STABLE [1f63b3626] 2025-04-28 10:34:45 +0530
Branch: REL_13_STABLE [d65485b02] 2025-04-28 11:55:00 +0530
-->
     <para>
      Prevent over-advancement of catalog xmin in <quote>fast
      forward</quote> mode of logical decoding (Zhijie Hou)
      <ulink url="&commit_baseurl;d65485b02">&sect;</ulink>
     </para>

     <para>
      This mistake could allow deleted catalog entries to be vacuumed away
      even though they were still potentially needed by the WAL-reading
      process.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [4909b38af] 2025-04-10 13:14:40 +0530
Branch: REL_17_STABLE [cadaf0ac4] 2025-04-10 12:57:10 +0530
Branch: REL_16_STABLE [9a2f8b4f0] 2025-04-10 12:44:11 +0530
Branch: REL_15_STABLE [9f21be08e] 2025-04-10 12:31:14 +0530
Branch: REL_14_STABLE [0434033e8] 2025-04-10 12:22:30 +0530
Branch: REL_13_STABLE [247ee9415] 2025-04-24 10:31:40 +0530
Branch: master [50b8ad30f] 2025-04-25 12:46:02 +0530
Branch: REL_17_STABLE [d96206f25] 2025-04-25 12:32:00 +0530
Branch: REL_16_STABLE [9987c9466] 2025-04-25 12:17:40 +0530
Branch: REL_15_STABLE [90bc4523f] 2025-04-25 12:05:52 +0530
Branch: REL_14_STABLE [bb1bc9fa9] 2025-04-25 11:53:27 +0530
Branch: REL_13_STABLE [4164d6976] 2025-04-25 11:45:40 +0530
-->
     <para>
      Avoid data loss when DDL operations that don't take a strong lock
      affect tables that are being logically replicated (Shlok Kyal,
      Hayato Kuroda)
      <ulink url="&commit_baseurl;247ee9415">&sect;</ulink>
      <ulink url="&commit_baseurl;4164d6976">&sect;</ulink>
     </para>

     <para>
      The catalog changes caused by the DDL command were not reflected
      into WAL-decoding processes, allowing them to decode subsequent
      changes using stale catalog data, probably resulting in data
      corruption.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [236750317] 2025-03-10 17:07:38 +0200
Branch: REL_17_STABLE [c1dd3a944] 2025-03-10 17:07:59 +0200
Branch: REL_16_STABLE [8171d2dae] 2025-03-10 17:08:02 +0200
Branch: REL_15_STABLE [50c589992] 2025-03-10 17:08:05 +0200
Branch: REL_14_STABLE [2ef048855] 2025-03-10 17:08:07 +0200
Branch: REL_13_STABLE [9b3914f18] 2025-03-10 17:08:10 +0200
Branch: master [f7c566a1a] 2025-03-10 18:58:10 +0200
Branch: REL_17_STABLE [f1ef111a0] 2025-03-10 19:00:08 +0200
Branch: REL_16_STABLE [324e0b656] 2025-03-10 19:01:51 +0200
Branch: REL_15_STABLE [d765226cb] 2025-03-10 19:01:58 +0200
Branch: REL_14_STABLE [136e68b46] 2025-03-10 19:02:02 +0200
Branch: REL_13_STABLE [6c1e79589] 2025-03-10 19:02:08 +0200
-->
     <para>
      Avoid duplicate snapshot creation in logical replication index
      lookups (Heikki Linnakangas)
      <ulink url="&commit_baseurl;9b3914f18">&sect;</ulink>
      <ulink url="&commit_baseurl;6c1e79589">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [7afca7ede] 2025-04-04 13:49:00 +0300
Branch: REL_17_STABLE [6526d0794] 2025-04-04 13:49:21 +0300
Branch: REL_16_STABLE [419321398] 2025-04-04 13:49:51 +0300
Branch: REL_15_STABLE [3c0fe75c4] 2025-04-04 13:50:00 +0300
Branch: REL_14_STABLE [a749c6f18] 2025-04-04 13:50:12 +0300
Branch: REL_13_STABLE [b92482dc3] 2025-04-04 13:50:52 +0300
-->
     <para>
      Fix overly-strict assertion
      in <function>gistFindCorrectParent()</function> (Heikki Linnakangas)
      <ulink url="&commit_baseurl;b92482dc3">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [7fe312f60] 2025-03-21 11:30:42 -0400
Branch: REL_17_STABLE [1353b1161] 2025-03-21 11:30:42 -0400
Branch: REL_16_STABLE [a28c1fb61] 2025-03-21 11:30:42 -0400
Branch: REL_15_STABLE [5e56efa7c] 2025-03-21 11:30:42 -0400
Branch: REL_14_STABLE [c196c610b] 2025-03-21 11:30:42 -0400
Branch: REL_13_STABLE [0f60e1fba] 2025-03-21 11:30:42 -0400
-->
     <para>
      In PL/pgSQL, avoid <quote>unexpected plan node type</quote> error
      when a scrollable cursor is defined on a
      simple <literal>SELECT <replaceable>expression</replaceable></literal>
      query (Andrei Lepikhov)
      <ulink url="&commit_baseurl;0f60e1fba">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [1fc340362] 2025-04-16 13:31:59 -0400
Branch: REL_17_STABLE [3424c1075] 2025-04-16 13:31:44 -0400
Branch: REL_16_STABLE [a25f21d99] 2025-04-16 13:31:44 -0400
Branch: REL_15_STABLE [7144cd538] 2025-04-16 13:31:44 -0400
Branch: REL_14_STABLE [148cc0105] 2025-04-16 13:31:44 -0400
Branch: REL_13_STABLE [6a3e57865] 2025-04-16 13:31:44 -0400
-->
     <para>
      Don't try to drop individual index partitions
      in <application>pg_dump</application>'s <option>--clean</option>
      mode (Jian He)
      <ulink url="&commit_baseurl;6a3e57865">&sect;</ulink>
     </para>

     <para>
      The server rejects such <command>DROP</command> commands.  That has
      no real consequences, since the partitions will go away anyway in
      the subsequent <command>DROP</command>s of either their parent
      tables or their partitioned index.  However, the error reported for
      the attempted drop causes problems when restoring
      in <option>--single-transaction</option> mode.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [29d75b25b] 2025-02-21 13:37:15 -0500
Branch: REL_17_STABLE [16eff4261] 2025-02-21 13:37:15 -0500
Branch: REL_16_STABLE [d850a6600] 2025-02-21 13:37:16 -0500
Branch: REL_15_STABLE [6df3be415] 2025-02-21 13:37:16 -0500
Branch: REL_14_STABLE [ce1475acd] 2025-02-21 13:37:16 -0500
Branch: REL_13_STABLE [5302ff95c] 2025-02-21 13:37:12 -0500
-->
     <para>
      In <application>pg_dumpall</application>, avoid emitting invalid
      role <command>GRANT</command> commands
      if <structname>pg_auth_members</structname> contains invalid role
      OIDs (Tom Lane)
      <ulink url="&commit_baseurl;5302ff95c">&sect;</ulink>
     </para>

     <para>
      Instead, print a warning and skip the entry.  This copes better with
      catalog corruption that has been seen to occur in back branches as a
      result of race conditions between <command>GRANT</command>
      and <command>DROP ROLE</command>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: REL_16_STABLE [82a8f0f46] 2025-04-03 09:33:58 -0700
Branch: REL_15_STABLE [63f6ecb6b] 2025-04-03 09:34:01 -0700
Branch: REL_14_STABLE [a8a918937] 2025-04-03 09:34:01 -0700
Branch: REL_13_STABLE [186c586c3] 2025-04-03 09:34:02 -0700
Author: Andres Freund <andres@anarazel.de>
Branch: REL_15_STABLE [9e129a224] 2025-04-03 09:34:01 -0700
Branch: REL_14_STABLE [aa435d7c4] 2025-04-03 09:34:01 -0700
Branch: REL_13_STABLE [5a3d5c083] 2025-04-03 09:34:02 -0700
-->
     <para>
      Allow <filename>contrib/dblink</filename> queries to be interrupted
      by query cancel (Noah Misch)
      <ulink url="&commit_baseurl;186c586c3">&sect;</ulink>
      <ulink url="&commit_baseurl;5a3d5c083">&sect;</ulink>
     </para>

     <para>
      This change back-patches a v17-era fix.  It prevents possible hangs
      in <command>CREATE DATABASE</command> and <command>DROP
      DATABASE</command> due to failure to detect deadlocks.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d05996340] 2025-04-19 16:37:42 -0400
Branch: REL_17_STABLE [ecb8e5641] 2025-04-19 16:37:42 -0400
Branch: REL_16_STABLE [2d33cf7b8] 2025-04-19 16:37:42 -0400
Branch: REL_15_STABLE [90a3fd811] 2025-04-19 16:37:42 -0400
Branch: REL_14_STABLE [3c2ea65bd] 2025-04-19 16:37:43 -0400
Branch: REL_13_STABLE [3f9132ed2] 2025-04-19 16:37:43 -0400
-->
     <para>
      Avoid crashing with corrupt input data
      in <filename>contrib/pageinspect</filename>'s
      <function>heap_page_items()</function> (Dmitry Kovalenko)
      <ulink url="&commit_baseurl;3f9132ed2">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [4623d7144] 2025-03-27 13:20:23 -0400
Branch: REL_17_STABLE [51d038da8] 2025-03-27 13:20:23 -0400
Branch: REL_16_STABLE [41ed749e4] 2025-03-27 13:20:23 -0400
Branch: REL_15_STABLE [0e86bad38] 2025-03-27 13:20:23 -0400
Branch: REL_14_STABLE [5ff827389] 2025-03-27 13:20:23 -0400
Branch: REL_13_STABLE [db8238da4] 2025-03-27 13:20:23 -0400
-->
     <para>
      Prevent assertion failure
      in <filename>contrib/pg_freespacemap</filename>'s
      <function>pg_freespacemap()</function> (Tender Wang)
      <ulink url="&commit_baseurl;db8238da4">&sect;</ulink>
     </para>

     <para>
      Applying <function>pg_freespacemap()</function> to a relation
      lacking storage (such as a view) caused an assertion failure,
      although there was no ill effect in non-assert builds.
      Add an error check to reject that case.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [6da2ba1d8] 2025-04-01 16:50:09 -0400
Branch: REL_17_STABLE [915e88968] 2025-04-01 16:49:51 -0400
Branch: REL_16_STABLE [a39eb9c77] 2025-04-01 16:49:51 -0400
Branch: REL_15_STABLE [0de9560ba] 2025-04-01 16:49:51 -0400
Branch: REL_14_STABLE [71790aef1] 2025-04-01 16:49:51 -0400
Branch: REL_13_STABLE [e4440a73c] 2025-04-01 16:49:51 -0400
-->
     <para>
      Fix build failure on macOS 15.4 (Tom Lane, Peter Eisentraut)
      <ulink url="&commit_baseurl;e4440a73c">&sect;</ulink>
     </para>

     <para>
      This macOS update broke our configuration probe
      for <function>strchrnul()</function>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [368c3fbf9] 2025-04-30 11:13:49 -0400
Branch: REL_17_STABLE [5d5970b9f] 2025-04-30 11:14:01 -0400
Branch: REL_16_STABLE [e076120d9] 2025-04-30 11:14:06 -0400
Branch: REL_15_STABLE [a144cf145] 2025-04-30 11:14:10 -0400
Branch: REL_14_STABLE [fa4244a43] 2025-04-30 11:14:15 -0400
Branch: REL_13_STABLE [9da548df3] 2025-04-30 11:14:19 -0400
-->
     <para>
      Update time zone data files to <application>tzdata</application>
      release 2025b for DST law changes in Chile, plus historical
      corrections for Iran (Tom Lane)
      <ulink url="&commit_baseurl;9da548df3">&sect;</ulink>
     </para>

     <para>
      There is a new time zone America/Coyhaique for Chile's Aysén Region,
      to account for it changing to UTC-03 year-round and thus diverging
      from America/Santiago.
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-20">
  <title>Release 13.20</title>

  <formalpara>
  <title>Release date:</title>
  <para>2025-02-20</para>
  </formalpara>

  <para>
   This release contains a few fixes from 13.19.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <para>
   The <productname>PostgreSQL</productname> community will stop
   releasing updates for the 13.X release series in November 2025.
   Users are encouraged to update to a newer release branch soon.
  </para>

  <sect2>
   <title>Migration to Version 13.20</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you are upgrading from a version earlier than 13.17,
    see <xref linkend="release-13-17"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [efdadeb22] 2025-02-14 18:09:19 -0500
Branch: REL_17_STABLE [a92db3d02] 2025-02-14 18:09:21 -0500
Branch: REL_16_STABLE [111f4dd27] 2025-02-14 18:09:23 -0500
Branch: REL_15_STABLE [22ffbbf24] 2025-02-14 18:09:24 -0500
Branch: REL_14_STABLE [985908df1] 2025-02-14 18:09:25 -0500
Branch: REL_13_STABLE [1f7a05324] 2025-02-14 18:09:27 -0500
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9f45e6a91] 2025-02-15 16:20:21 -0500
Branch: REL_17_STABLE [3abe6e04c] 2025-02-15 16:20:21 -0500
Branch: REL_16_STABLE [991a60a9f] 2025-02-15 16:20:21 -0500
Branch: REL_15_STABLE [e782a63cc] 2025-02-15 16:20:21 -0500
Branch: REL_14_STABLE [c08309584] 2025-02-15 16:20:21 -0500
Branch: REL_13_STABLE [d6d29b213] 2025-02-15 16:20:21 -0500
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a7f95859e] 2025-02-16 12:46:35 -0500
Branch: REL_17_STABLE [3977bd298] 2025-02-16 12:46:35 -0500
Branch: REL_16_STABLE [644b7d686] 2025-02-16 12:46:35 -0500
Branch: REL_15_STABLE [2226a2e26] 2025-02-16 12:46:35 -0500
Branch: REL_14_STABLE [f864a4cdf] 2025-02-16 12:46:35 -0500
Branch: REL_13_STABLE [9f052613e] 2025-02-16 12:46:35 -0500
-->
     <para>
      Improve behavior of <application>libpq</application>'s quoting
      functions (Andres Freund, Tom Lane)
      <ulink url="&commit_baseurl;1f7a05324">&sect;</ulink>
      <ulink url="&commit_baseurl;d6d29b213">&sect;</ulink>
      <ulink url="&commit_baseurl;9f052613e">&sect;</ulink>
     </para>

     <para>
      The changes made for CVE-2025-1094 had one serious oversight:
      <function>PQescapeLiteral()</function>
      and <function>PQescapeIdentifier()</function> failed to honor their
      string length parameter, instead always reading to the input
      string's trailing null.  This resulted in including unwanted text in
      the output, if the caller intended to truncate the string via the
      length parameter.  With very bad luck it could cause a crash due to
      reading off the end of memory.
     </para>

     <para>
      In addition, modify all these quoting functions so that when invalid
      encoding is detected, an invalid sequence is substituted for just
      the first byte of the presumed character, not all of it.  This
      reduces the risk of problems if a calling application performs
      additional processing on the quoted string.
     </para>
    </listitem>

    <listitem>
<!--
note: no actual bug in v15 and later
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [773c51dd3] 2025-02-13 16:30:58 +0900
Branch: REL_17_STABLE [6342d49d8] 2025-02-13 16:31:05 +0900
Branch: REL_16_STABLE [139beb035] 2025-02-13 16:31:08 +0900
Branch: REL_15_STABLE [a37c83d1e] 2025-02-13 16:31:10 +0900
Branch: REL_14_STABLE [8e58f8024] 2025-02-13 16:31:11 +0900
Branch: REL_13_STABLE [520905824] 2025-02-13 16:31:12 +0900
-->
     <para>
      Fix crash involving triggers on partitioned tables that make use of
      transition tables (Kyotaro Horiguchi)
      <ulink url="&commit_baseurl;520905824">&sect;</ulink>
     </para>

     <para>
      If there are both <literal>AFTER UPDATE</literal>
      and <literal>AFTER DELETE</literal> triggers, the need for
      transition tables was determined incorrectly, leading to a crash
      during cross-partition updates.
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-19">
  <title>Release 13.19</title>

  <formalpara>
  <title>Release date:</title>
  <para>2025-02-13</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.18.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <para>
   The <productname>PostgreSQL</productname> community will stop
   releasing updates for the 13.X release series in November 2025.
   Users are encouraged to update to a newer release branch soon.
  </para>

  <sect2>
   <title>Migration to Version 13.19</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you are upgrading from a version earlier than 13.17,
    see <xref linkend="release-13-17"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [5dc1e42b4] 2025-02-10 10:03:37 -0500
Branch: REL_17_STABLE [43a77239d] 2025-02-10 10:03:38 -0500
Branch: REL_16_STABLE [92e4170f4] 2025-02-10 10:03:39 -0500
Branch: REL_15_STABLE [370c94d4c] 2025-02-10 10:03:39 -0500
Branch: REL_14_STABLE [e0ef3d776] 2025-02-10 10:03:40 -0500
Branch: REL_13_STABLE [c906bfe1b] 2025-02-10 10:03:40 -0500
Branch: master [4dc289635] 2025-02-10 10:03:37 -0500
Branch: REL_17_STABLE [7d43ca6fe] 2025-02-10 10:03:38 -0500
Branch: REL_16_STABLE [6e05b195d] 2025-02-10 10:03:39 -0500
Branch: REL_15_STABLE [703b3fd5d] 2025-02-10 10:03:39 -0500
Branch: REL_14_STABLE [5bc33cbea] 2025-02-10 10:03:40 -0500
Branch: REL_13_STABLE [db3eb0e82] 2025-02-10 10:03:40 -0500
Branch: master [3e98c8ce5] 2025-02-10 10:03:37 -0500
Branch: REL_17_STABLE [61ad93cdd] 2025-02-10 10:03:38 -0500
Branch: REL_16_STABLE [56aa2dcdd] 2025-02-10 10:03:39 -0500
Branch: REL_15_STABLE [b1756da75] 2025-02-10 10:03:39 -0500
Branch: REL_14_STABLE [2ae54ae17] 2025-02-10 10:03:40 -0500
Branch: REL_13_STABLE [5df4e1632] 2025-02-10 10:03:40 -0500
Branch: master [ac00ff1c9] 2025-02-10 10:03:37 -0500
Branch: REL_17_STABLE [02d4d87ac] 2025-02-10 10:03:38 -0500
Branch: REL_16_STABLE [01784793f] 2025-02-10 10:03:39 -0500
Branch: REL_15_STABLE [de4b92f33] 2025-02-10 10:03:39 -0500
Branch: REL_14_STABLE [46ddf98df] 2025-02-10 10:03:40 -0500
Branch: REL_13_STABLE [4ea3f5ef3] 2025-02-10 10:03:40 -0500
Branch: master [979205e47] 2025-02-10 12:12:14 -0500
Branch: REL_17_STABLE [05abb0f83] 2025-02-10 12:12:53 -0500
Branch: REL_16_STABLE [41343f840] 2025-02-10 12:12:56 -0500
Branch: REL_15_STABLE [a085fa731] 2025-02-10 12:12:58 -0500
Branch: REL_14_STABLE [4a6825c76] 2025-02-10 12:12:59 -0500
Branch: REL_13_STABLE [7beb2af5e] 2025-02-10 12:13:02 -0500
Branch: REL_13_STABLE [00f1a1f66] 2025-02-10 10:03:40 -0500
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [5bf12323b] 2025-02-10 16:30:03 -0500
Branch: REL_17_STABLE [85c1fcc65] 2025-02-10 16:30:31 -0500
Branch: REL_16_STABLE [0075a5c6c] 2025-02-10 16:30:37 -0500
Branch: REL_15_STABLE [9862de917] 2025-02-10 16:30:54 -0500
Branch: REL_14_STABLE [e1f1b030d] 2025-02-10 16:31:01 -0500
Branch: REL_13_STABLE [f9fceef6e] 2025-02-10 16:31:09 -0500
-->
     <para>
      Harden <function>PQescapeString</function> and allied functions
      against invalidly-encoded input strings (Andres Freund, Noah Misch)
      <ulink url="&commit_baseurl;c906bfe1b">&sect;</ulink>
      <ulink url="&commit_baseurl;db3eb0e82">&sect;</ulink>
      <ulink url="&commit_baseurl;5df4e1632">&sect;</ulink>
      <ulink url="&commit_baseurl;4ea3f5ef3">&sect;</ulink>
      <ulink url="&commit_baseurl;7beb2af5e">&sect;</ulink>
      <ulink url="&commit_baseurl;00f1a1f66">&sect;</ulink>
      <ulink url="&commit_baseurl;f9fceef6e">&sect;</ulink>
     </para>

     <para>
      Data-quoting functions supplied by <application>libpq</application>
      now fully check the encoding validity of their input.  If invalid
      characters are detected, they report an error if possible.  For the
      ones that lack an error return convention, the output string is
      adjusted to ensure that the server will report invalid encoding and
      no intervening processing will be fooled by bytes that might happen
      to match single quote, backslash, etc.
     </para>

     <para>
      The purpose of this change is to guard against SQL-injection attacks
      that are possible if one of these functions is used to quote crafted
      input.  There is no hazard when the resulting string is sent
      directly to a <productname>PostgreSQL</productname> server (which
      would check its encoding anyway), but there is a risk when it is
      passed through <application>psql</application> or other client-side
      code.  Historically such code has not carefully vetted encoding, and
      in many cases it's not clear what it should do if it did detect such
      a problem.
     </para>

     <para>
      This fix is effective only if the data-quoting function, the server,
      and any intermediate processing agree on the character encoding
      that's being used.  Applications that insert untrusted input into
      SQL commands should take special care to ensure that that's true.
     </para>

     <para>
      Applications and drivers that quote untrusted input without using
      these <application>libpq</application> functions may be at risk of
      similar problems.  They should first confirm the data is valid in
      the encoding expected by the server.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Stephen Fewer for reporting this problem.
      (CVE-2025-1094)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [34486b609] 2024-12-28 16:08:50 -0500
Branch: REL_17_STABLE [15b4c46c3] 2024-12-28 16:08:50 -0500
Branch: REL_16_STABLE [41a252c2c] 2024-12-28 16:08:50 -0500
Branch: REL_15_STABLE [3d1ecc92a] 2024-12-28 16:08:50 -0500
Branch: REL_14_STABLE [c58b0c43d] 2024-12-28 16:08:50 -0500
Branch: REL_13_STABLE [70d067cec] 2024-12-28 16:08:50 -0500
-->
     <para>
      Exclude parallel workers from connection privilege checks and limits
      (Tom Lane)
      <ulink url="&commit_baseurl;70d067cec">&sect;</ulink>
     </para>

     <para>
      Do not
      check <literal>datallowconn</literal>, <literal>rolcanlogin</literal>,
      and <literal>ACL_CONNECT</literal> privileges when starting a
      parallel worker, instead assuming that it's enough for the leader
      process to have passed similar checks originally.  This avoids, for
      example, unexpected failures of parallelized queries when the leader
      is running as a role that lacks login privilege.  In the same vein,
      enforce <literal>ReservedConnections</literal>,
      <literal>datconnlimit</literal>, and <literal>rolconnlimit</literal>
      limits only against regular backends, and count only regular
      backends while checking if the limits were already reached.  Those
      limits are meant to prevent excessive consumption of process slots
      for regular backends --- but parallel workers and other special
      processes have their own pools of process slots with their own limit
      checks.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [578a7fe7b] 2024-12-21 23:42:39 +0200
Branch: REL_17_STABLE [7cfdb4d1e] 2024-12-21 23:42:52 +0200
Branch: REL_16_STABLE [9d8ab2c46] 2024-12-21 23:42:55 +0200
Branch: REL_15_STABLE [acd5c28db] 2024-12-21 23:42:57 +0200
Branch: REL_14_STABLE [41eafbb49] 2024-12-21 23:42:59 +0200
Branch: REL_13_STABLE [9c1afd344] 2024-12-21 23:45:56 +0200
-->
     <para>
      Keep <varname>TransactionXmin</varname> in sync
      with <varname>MyProc-&gt;xmin</varname> (Heikki Linnakangas)
      <ulink url="&commit_baseurl;9c1afd344">&sect;</ulink>
     </para>

     <para>
      This oversight could permit a process to try to access data that had
      already been vacuumed away.  One known consequence is
      transient <quote>could not access status of transaction</quote>
      errors.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [af8cd1639] 2025-01-14 14:28:49 +0200
Branch: REL_17_STABLE [96e61b279] 2025-01-14 14:35:11 +0200
Branch: REL_16_STABLE [91fc447c2] 2025-01-14 14:41:01 +0200
Branch: REL_15_STABLE [ce7c406f0] 2025-01-14 14:29:11 +0200
Branch: REL_14_STABLE [fce17c3a5] 2025-01-14 14:29:13 +0200
Branch: REL_13_STABLE [f217c4105] 2025-01-14 18:54:56 +0200
-->
     <para>
      Fix race condition that could cause failure to add a newly-inserted
      catalog entry to a catalog cache list (Heikki Linnakangas)
      <ulink url="&commit_baseurl;f217c4105">&sect;</ulink>
     </para>

     <para>
      This could result, for example, in failure to use a newly-created
      function within an existing session.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [81772a495] 2025-01-25 11:28:14 -0800
Branch: REL_17_STABLE [1587f7b9f] 2025-01-25 11:28:18 -0800
Branch: master [d28cd3e7b] 2025-01-25 11:28:14 -0800
Branch: REL_17_STABLE [f4af4515b] 2025-01-25 11:28:18 -0800
Branch: REL_16_STABLE [9311fcb86] 2025-01-25 11:28:18 -0800
Branch: REL_15_STABLE [dc02b98bd] 2025-01-25 11:28:19 -0800
Branch: REL_14_STABLE [25e99483c] 2025-01-25 11:28:19 -0800
Branch: REL_13_STABLE [8bfd2ceba] 2025-01-25 11:28:19 -0800
-->
     <para>
      Prevent possible catalog corruption when a system catalog is
      vacuumed concurrently with an update (Noah Misch)
      <ulink url="&commit_baseurl;8bfd2ceba">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [38c579b08] 2024-12-20 23:57:02 +1300
Branch: REL_17_STABLE [0350b876b] 2024-12-20 23:57:18 +1300
Branch: REL_16_STABLE [ba02d24ba] 2024-12-20 23:57:26 +1300
Branch: REL_15_STABLE [fb540b6aa] 2024-12-20 23:57:34 +1300
Branch: REL_14_STABLE [23c743b64] 2024-12-20 23:57:53 +1300
Branch: REL_13_STABLE [228091216] 2024-12-20 23:58:08 +1300
Branch: REL_17_STABLE [66aaabe7a] 2025-01-08 10:43:40 +1300
Branch: REL_16_STABLE [c957d7444] 2025-01-08 10:46:45 +1300
Branch: REL_15_STABLE [3181befdc] 2025-01-08 10:47:43 +1300
Branch: REL_14_STABLE [f154f028d] 2025-01-08 10:48:01 +1300
Branch: REL_13_STABLE [a1d17a894] 2025-01-08 10:48:57 +1300
Branch: REL_17_STABLE [45aef9f6b] 2025-01-08 17:02:30 +1300
Branch: REL_16_STABLE [9defaaa1d] 2025-01-08 17:03:25 +1300
Branch: REL_15_STABLE [190054e61] 2025-01-08 17:03:45 +1300
Branch: REL_14_STABLE [049c8cb9a] 2025-01-08 17:04:26 +1300
Branch: REL_13_STABLE [417d41c65] 2025-01-08 17:14:15 +1300
-->
     <para>
      Fix data corruption when relation truncation fails (Thomas Munro)
      <ulink url="&commit_baseurl;228091216">&sect;</ulink>
      <ulink url="&commit_baseurl;a1d17a894">&sect;</ulink>
      <ulink url="&commit_baseurl;417d41c65">&sect;</ulink>
     </para>

     <para>
      The filesystem calls needed to perform relation truncation could
      fail, leaving inconsistent state on disk (for example, effectively
      reviving deleted data).  We can't really prevent that, but we can
      recover by dint of making such failures into PANICs, so that
      consistency is restored by replaying from WAL up to just before the
      attempted truncation.  This isn't a hugely desirable behavior, but
      such failures are rare enough that it seems an acceptable solution.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [75818b3af] 2024-12-03 10:12:05 +1300
Branch: REL_17_STABLE [d4ffbf47b] 2024-12-03 10:19:47 +1300
Branch: REL_16_STABLE [ad5aa7bfd] 2024-12-03 10:20:10 +1300
Branch: REL_15_STABLE [a501fe5a9] 2024-12-03 10:20:22 +1300
Branch: REL_14_STABLE [7d0b91a28] 2024-12-03 10:12:56 +1300
Branch: REL_13_STABLE [1168acbca] 2024-12-03 10:13:49 +1300
-->
     <para>
      Prevent checkpoints from starting during relation truncation
      (Robert Haas)
      <ulink url="&commit_baseurl;1168acbca">&sect;</ulink>
     </para>

     <para>
      This avoids a race condition wherein the modified file might not get
      fsync'd before completing the checkpoint, creating a risk of data
      corruption if the operating system crashes soon after.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master Release: REL_16_BR [dac1ff309] 2022-07-05 10:16:12 +0900
Branch: REL_15_STABLE [c1c9df315] 2024-12-20 09:11:03 +0900
Branch: REL_14_STABLE [1f95181b4] 2024-12-20 09:11:08 +0900
Branch: REL_13_STABLE [26a79cbbd] 2024-12-20 09:11:11 +0900
-->
     <para>
      Use <function>rename()</function>
      not <function>link()</function>/<function>unlink()</function> to
      rename files (Nathan Bossart)
      <ulink url="&commit_baseurl;26a79cbbd">&sect;</ulink>
     </para>

     <para>
      The previous coding was intended to assure that the operation could
      not accidentally overwrite an existing file.  However a failure
      could leave two links to the same file in existence, confusing
      subsequent operations and creating a risk of data corruption.
      In practice we do not use this functionality in places where the
      target filename could already exist, so it seems better to give up
      the no-overwrite guarantee to remove the multiple-link hazard.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [ff90ee614] 2024-12-28 07:16:22 -0800
Branch: REL_17_STABLE [fa6131377] 2024-12-28 07:16:26 -0800
Branch: REL_16_STABLE [5d94aa4dc] 2024-12-28 07:16:26 -0800
Branch: REL_15_STABLE [83bb52375] 2024-12-28 07:16:26 -0800
Branch: REL_14_STABLE [536acda0b] 2024-12-28 07:16:27 -0800
Branch: REL_13_STABLE [102546322] 2024-12-28 07:16:27 -0800
-->
     <para>
      Avoid possibly losing an update of
      <structname>pg_database</structname>.<structfield>datfrozenxid</structfield>
      when <command>VACUUM</command> runs concurrently with
      a <command>REASSIGN OWNED</command> that changes that database's
      owner (Kirill Reshke)
      <ulink url="&commit_baseurl;102546322">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ea68ea632] 2025-01-22 11:58:20 -0500
Branch: REL_17_STABLE [2b72fed2d] 2025-01-22 11:58:20 -0500
Branch: REL_16_STABLE [8c57f5485] 2025-01-22 11:58:20 -0500
Branch: REL_15_STABLE [cdeed4de7] 2025-01-22 11:58:20 -0500
Branch: REL_14_STABLE [308599305] 2025-01-22 11:58:20 -0500
Branch: REL_13_STABLE [001c09d8b] 2025-01-22 11:58:20 -0500
-->
     <para>
      Fix incorrect <structfield>tg_updatedcols</structfield> values
      passed to <literal>AFTER UPDATE</literal> triggers (Tom Lane)
      <ulink url="&commit_baseurl;001c09d8b">&sect;</ulink>
     </para>

     <para>
      In some cases the <structfield>tg_updatedcols</structfield> bitmap
      could describe the set of columns updated by an earlier command in
      the same transaction, fooling the trigger into doing the wrong
      thing.
     </para>

     <para>
      Also, prevent memory bloat caused by making too many copies of
      the <structfield>tg_updatedcols</structfield> bitmap.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [3220ceaf7] 2024-12-07 13:12:32 -0500
Branch: REL_17_STABLE [765f76d8c] 2024-12-07 13:12:32 -0500
Branch: REL_16_STABLE [26c233b8b] 2024-12-07 13:12:32 -0500
Branch: REL_15_STABLE [d2f59497a] 2024-12-07 13:12:32 -0500
Branch: REL_14_STABLE [5882a4ba0] 2024-12-07 13:12:32 -0500
Branch: REL_13_STABLE [f2eba400b] 2024-12-07 13:12:32 -0500
-->
     <para>
      Fix mis-processing of <function>to_timestamp</function>'s
      <literal>FF<replaceable>n</replaceable></literal> format codes
      (Tom Lane)
      <ulink url="&commit_baseurl;f2eba400b">&sect;</ulink>
     </para>

     <para>
      An integer format code immediately
      preceding <literal>FF<replaceable>n</replaceable></literal> would
      consume all available digits, leaving none
      for <literal>FF<replaceable>n</replaceable></literal>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [d673eefd4] 2025-01-12 12:54:32 +0000
Branch: REL_17_STABLE [61b12135f] 2025-01-12 12:56:52 +0000
Branch: REL_16_STABLE [77763f3be] 2025-01-12 12:58:14 +0000
Branch: REL_15_STABLE [7c0379516] 2025-01-12 12:59:40 +0000
Branch: REL_14_STABLE [dc8cd9cd0] 2025-01-12 13:01:22 +0000
Branch: REL_13_STABLE [8f137f038] 2025-01-12 13:02:56 +0000
-->
     <para>
      When deparsing an <literal>XMLTABLE()</literal> expression, ensure
      that XML namespace names are double-quoted when necessary (Dean
      Rasheed)
      <ulink url="&commit_baseurl;8f137f038">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Daniel Gustafsson <dgustafsson@postgresql.org>
Branch: master [27a1f8d10] 2025-01-10 22:02:58 +0100
Branch: REL_17_STABLE [8ed9bf0a3] 2025-01-10 22:02:58 +0100
Branch: REL_16_STABLE [c35bbdfbc] 2025-01-10 22:02:58 +0100
Branch: REL_15_STABLE [830215a4c] 2025-01-10 22:02:58 +0100
Branch: REL_14_STABLE [83ffb9f20] 2025-01-10 22:02:58 +0100
Branch: REL_13_STABLE [84b8f6d9f] 2025-01-10 22:02:58 +0100
Branch: master [97698cc51] 2025-01-12 23:44:39 +0100
Branch: REL_17_STABLE [dc24c9ad5] 2025-01-12 23:44:39 +0100
Branch: REL_16_STABLE [116036d81] 2025-01-12 23:44:39 +0100
Branch: REL_15_STABLE [9ad7a32b2] 2025-01-12 23:44:39 +0100
Branch: REL_14_STABLE [9e596a099] 2025-01-12 23:44:39 +0100
Branch: REL_13_STABLE [7b1f50d8c] 2025-01-12 23:44:39 +0100
-->
     <para>
      Include the <literal>ldapscheme</literal> option
      in <function>pg_hba_file_rules()</function> output (Laurenz Albe)
      <ulink url="&commit_baseurl;84b8f6d9f">&sect;</ulink>
      <ulink url="&commit_baseurl;7b1f50d8c">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a43d7a8c7] 2024-11-19 18:26:19 -0500
Branch: REL_17_STABLE [c1ebef3c1] 2024-11-19 18:26:19 -0500
Branch: REL_16_STABLE [f286f64bc] 2024-11-19 18:26:19 -0500
Branch: REL_15_STABLE [fd3383ff1] 2024-11-19 18:26:19 -0500
Branch: REL_14_STABLE [44a4a521d] 2024-11-19 18:26:19 -0500
Branch: REL_13_STABLE [6b66dba3f] 2024-11-19 18:26:19 -0500
-->
     <para>
      Don't merge <literal>UNION</literal> operations if their column
      collations aren't consistent (Tom Lane)
      <ulink url="&commit_baseurl;6b66dba3f">&sect;</ulink>
     </para>

     <para>
      Previously we ignored collations when deciding if it's safe to
      merge <literal>UNION</literal> steps into a single
      N-way <literal>UNION</literal> operation.  This was arguably valid
      before the introduction of nondeterministic collations, but it's not
      anymore, since the collation in use can affect the definition of
      uniqueness.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [bf826ea06] 2025-01-16 20:40:07 -0500
Branch: REL_17_STABLE [0671a71e0] 2025-01-16 20:40:07 -0500
Branch: REL_16_STABLE [94c02bd33] 2025-01-16 20:40:07 -0500
Branch: REL_15_STABLE [724ebebb1] 2025-01-16 20:40:07 -0500
Branch: REL_14_STABLE [5f725648f] 2025-01-16 20:40:07 -0500
Branch: REL_13_STABLE [45004f527] 2025-01-16 20:40:07 -0500
-->
     <para>
      Fix missed expression processing for partition pruning steps
      (Tom Lane)
      <ulink url="&commit_baseurl;45004f527">&sect;</ulink>
     </para>

     <para>
      This oversight could lead to <quote>unrecognized node type</quote>
      errors, and perhaps other problems, in queries accessing partitioned
      tables.
     </para>
    </listitem>

    <listitem>
<!--
Author: Nathan Bossart <nathan@postgresql.org>
Branch: master [84f1b0b03] 2024-12-17 15:24:45 -0600
Branch: REL_17_STABLE [18452b70a] 2024-12-17 15:24:45 -0600
Branch: REL_16_STABLE [2a7402322] 2024-12-17 15:24:45 -0600
Branch: REL_15_STABLE [9f7b7d516] 2024-12-17 15:24:45 -0600
Branch: REL_14_STABLE [84dc1303c] 2024-12-17 15:24:45 -0600
Branch: REL_13_STABLE [853cef097] 2024-12-17 15:24:45 -0600
-->
     <para>
      Allow dshash tables to grow past 1GB (Matthias van de Meent)
      <ulink url="&commit_baseurl;853cef097">&sect;</ulink>
     </para>

     <para>
      This avoids errors like <quote>invalid DSA memory alloc request
      size</quote>.  The case can occur for example in transactions that
      process several million tables.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [720e52984] 2025-01-14 15:12:56 +0900
Branch: REL_17_STABLE [e027ee990] 2025-01-14 15:13:14 +0900
Branch: REL_16_STABLE [bfda7d8dd] 2025-01-14 15:13:15 +0900
Branch: REL_15_STABLE [9e9f30139] 2025-01-14 15:13:17 +0900
Branch: REL_14_STABLE [e35ff6520] 2025-01-14 15:13:19 +0900
Branch: REL_13_STABLE [332023e2d] 2025-01-14 15:13:20 +0900
-->
     <para>
      Avoid possible integer overflow
      in <function>bringetbitmap()</function> (James Hunter, Evgeniy
      Gorbanyov)
      <ulink url="&commit_baseurl;332023e2d">&sect;</ulink>
     </para>

     <para>
      Since the result is only used for statistical purposes, the effects
      of this error were mostly cosmetic.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [6cf1647d8] 2025-01-20 09:29:42 +0900
Branch: REL_17_STABLE [e6767c0ed] 2025-01-20 09:30:33 +0900
Branch: REL_16_STABLE [2c2e1d4f4] 2025-01-20 09:30:36 +0900
Branch: REL_15_STABLE [26554facc] 2025-01-20 09:30:37 +0900
Branch: REL_14_STABLE [a2d4f806c] 2025-01-20 09:30:39 +0900
Branch: REL_13_STABLE [0f0431e91] 2025-01-20 09:30:40 +0900
-->
     <para>
      Prevent streaming standby servers from looping infinitely when
      reading a WAL record that crosses pages (Kyotaro Horiguchi,
      Alexander Kukushkin)
      <ulink url="&commit_baseurl;0f0431e91">&sect;</ulink>
     </para>

     <para>
      This would happen when the record's continuation is on a page that
      needs to be read from a different WAL source.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [8b9cbf492] 2024-12-10 13:51:59 -0800
Branch: REL_17_STABLE [4bd9de3f4] 2024-12-10 13:52:02 -0800
Branch: REL_16_STABLE [ac4a2b403] 2024-12-10 13:52:02 -0800
Branch: REL_15_STABLE [839da50bd] 2024-12-10 13:52:02 -0800
Branch: REL_14_STABLE [315264d70] 2024-12-10 13:52:02 -0800
Branch: REL_13_STABLE [6151769f6] 2024-12-10 13:52:02 -0800
-->
     <para>
      Fix unintended promotion of FATAL errors to PANIC during early
      process startup (Noah Misch)
      <ulink url="&commit_baseurl;6151769f6">&sect;</ulink>
     </para>

     <para>
      This fixes some unlikely cases that would result in <quote>PANIC:
      proc_exit() called in child process</quote>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [3f9b96217] 2024-12-07 15:56:28 -0500
Branch: REL_17_STABLE [ec7b89cc5] 2024-12-07 15:56:28 -0500
Branch: REL_16_STABLE [be5db08ed] 2024-12-07 15:56:28 -0500
Branch: REL_15_STABLE [0e4fa06ba] 2024-12-07 15:56:28 -0500
Branch: REL_14_STABLE [1a34cf0f4] 2024-12-07 15:56:28 -0500
Branch: REL_13_STABLE [725d98102] 2024-12-07 15:56:28 -0500
Branch: master [c82003760] 2024-12-07 14:28:16 -0500
Branch: REL_17_STABLE [5b44a317a] 2024-12-07 14:28:16 -0500
Branch: REL_16_STABLE [faad01835] 2024-12-07 14:28:16 -0500
Branch: REL_15_STABLE [d40191467] 2024-12-07 14:28:16 -0500
Branch: REL_14_STABLE [d9d5e1b48] 2024-12-07 14:28:16 -0500
Branch: REL_13_STABLE [531cbd8b7] 2024-12-07 14:28:16 -0500
-->
     <para>
      Fix cases where an operator family member operator or support
      procedure could become a dangling reference (Tom Lane)
      <ulink url="&commit_baseurl;725d98102">&sect;</ulink>
      <ulink url="&commit_baseurl;531cbd8b7">&sect;</ulink>
     </para>

     <para>
      In some cases a data type could be dropped while references to its
      OID still remain in <structname>pg_amop</structname>
      or <structname>pg_amproc</structname>.  While that caused no
      immediate issues, an attempt to drop the owning operator family
      would fail, and <application>pg_dump</application> would produce
      bogus output when dumping the operator family.  This fix causes
      creation and modification of operator families/classes to add
      needed dependency entries so that dropping a data type will also
      drop any dependent operator family elements.  That does not help
      vulnerable pre-existing operator families, though, so a band-aid has
      also been added to <command>DROP OPERATOR FAMILY</command> to
      prevent failure when dropping a family that has dangling members.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [c9b3d4909] 2024-12-30 13:33:09 +0900
Branch: REL_17_STABLE [836435424] 2024-12-30 13:33:58 +0900
Branch: REL_16_STABLE [e3a27fd06] 2024-12-30 13:33:59 +0900
Branch: REL_15_STABLE [da8bd5d42] 2024-12-30 13:34:01 +0900
Branch: REL_14_STABLE [c53d90bb4] 2025-01-08 08:47:19 +0900
Branch: REL_13_STABLE [a786cf04d] 2025-01-08 08:47:24 +0900
Author: Michael Paquier <michael@paquier.xyz>
Branch: REL_17_STABLE [bbe68c13a] 2024-12-23 12:48:06 +0900
Branch: REL_16_STABLE [4d45e7490] 2024-12-23 12:48:08 +0900
Branch: REL_15_STABLE [6c9b39754] 2024-12-23 12:48:09 +0900
Branch: REL_14_STABLE [cfd6cbcf9] 2024-12-23 12:48:10 +0900
Branch: REL_13_STABLE [ba230ce40] 2024-12-23 12:48:12 +0900
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [ea792bfd9] 2024-11-21 15:14:02 +0900
Branch: REL_17_STABLE [afe9b0d9f] 2024-11-21 15:14:11 +0900
Branch: REL_16_STABLE [e749eaf46] 2024-11-21 15:14:13 +0900
Branch: REL_15_STABLE [6fc30c24c] 2024-11-21 15:14:15 +0900
-->
     <para>
      Fix multiple memory leaks in logical decoding output (Vignesh C,
      Masahiko Sawada, Boyu Yang)
      <ulink url="&commit_baseurl;a786cf04d">&sect;</ulink>
      <ulink url="&commit_baseurl;ba230ce40">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL_15_STABLE [4398507df] 2024-12-05 12:54:41 -0500
Branch: REL_14_STABLE [d24eb0e91] 2024-12-05 12:54:41 -0500
Branch: REL_13_STABLE [cd1c8b992] 2024-12-05 12:54:41 -0500
-->
     <para>
      Avoid low-probability crash on out-of-memory, due to missing check
      for failure return from <function>malloc()</function>
      (Karina Litskevich)
      <ulink url="&commit_baseurl;cd1c8b992">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [b9aa4166f] 2025-01-30 15:36:44 -0500
Branch: REL_17_STABLE [1e25cdb21] 2025-01-30 15:36:07 -0500
Branch: REL_16_STABLE [f7a08b6e9] 2025-01-30 15:36:07 -0500
Branch: REL_15_STABLE [b296e55b4] 2025-01-30 15:36:07 -0500
Branch: REL_14_STABLE [6a33bb35c] 2025-01-30 15:36:07 -0500
Branch: REL_13_STABLE [49a38238e] 2025-01-30 15:36:07 -0500
-->
     <para>
      Avoid integer overflow while
      testing <varname>wal_skip_threshold</varname> condition (Tom Lane)
      <ulink url="&commit_baseurl;49a38238e">&sect;</ulink>
     </para>

     <para>
      A transaction that created a very large relation could mistakenly
      decide to ensure durability by copying the relation into WAL instead
      of fsync'ing it, thereby negating the point
      of <varname>wal_skip_threshold</varname>.  (This only matters
      when <varname>wal_level</varname> is set
      to <literal>minimal</literal>, else a WAL copy is required anyway.)
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [4ba84de45] 2024-11-25 14:42:35 -0800
Branch: REL_17_STABLE [718af10da] 2024-11-25 14:42:38 -0800
Branch: REL_16_STABLE [c1285bbeb] 2024-11-25 14:42:39 -0800
Branch: REL_15_STABLE [941e0c0df] 2024-11-25 14:42:39 -0800
Branch: REL_14_STABLE [2690a4f5d] 2024-11-25 14:42:40 -0800
Branch: REL_13_STABLE [01745fb04] 2024-11-25 14:42:40 -0800
-->
     <para>
      Fix unsafe order of operations during cache lookups (Noah Misch)
      <ulink url="&commit_baseurl;01745fb04">&sect;</ulink>
     </para>

     <para>
      The only known consequence was a usually-harmless <quote>you don't
      own a lock of type ExclusiveLock</quote> warning
      during <command>GRANT TABLESPACE</command>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [78c09bd9f] 2024-11-22 15:29:47 +1300
Branch: REL_17_STABLE [8a9a51518] 2024-11-22 15:29:28 +1300
Branch: REL_16_STABLE [6de14dbb3] 2024-11-22 15:29:18 +1300
Branch: REL_15_STABLE [15ab513fe] 2024-11-22 15:29:00 +1300
Branch: REL_14_STABLE [7ca388fd0] 2024-11-22 15:30:37 +1300
Branch: REL_13_STABLE [8aefd8b6f] 2024-11-22 15:32:02 +1300
-->
     <para>
      Fix possible <quote>failed to resolve name</quote> failures when
      using JIT on older ARM platforms (Thomas Munro)
      <ulink url="&commit_baseurl;8aefd8b6f">&sect;</ulink>
     </para>

     <para>
      This could occur as a consequence of inconsistency about the default
      setting of <option>-moutline-atomics</option> between gcc and clang.
      At least Debian and Ubuntu are known to ship gcc and clang compilers
      that target armv8-a but differ on the use of outline atomics by
      default.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: REL_15_STABLE [9b136b0f2] 2025-01-18 09:31:39 -0500
Branch: REL_14_STABLE [f4fd5325c] 2025-01-18 09:33:30 -0500
Branch: REL_13_STABLE [2c4a532c9] 2025-01-18 09:33:49 -0500
Branch: REL_15_STABLE [e708f3188] 2025-01-18 09:30:10 -0500
Branch: REL_14_STABLE [9f1c67488] 2025-01-18 09:33:16 -0500
Branch: REL_13_STABLE [fbf8efbda] 2025-01-18 09:33:43 -0500
-->
     <para>
      Fix handling of Windows junction points that are not
      of <productname>PostgreSQL</productname> origin (Thomas Munro)
      <ulink url="&commit_baseurl;2c4a532c9">&sect;</ulink>
      <ulink url="&commit_baseurl;fbf8efbda">&sect;</ulink>
     </para>

     <para>
      Previously, <application>initdb</application> would fail if the path
      to the data directory included junction points whose expansion isn't
      in <quote>drive absolute</quote> format, or whose expansion points
      to another junction point.
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [8f4ee9626] 2024-12-19 13:11:39 +1300
Branch: REL_17_STABLE [7b8d45d27] 2024-12-19 13:12:18 +1300
Branch: REL_16_STABLE [093fc156b] 2024-12-19 13:12:41 +1300
Branch: REL_15_STABLE [ef178d38b] 2024-12-19 13:13:01 +1300
Branch: REL_14_STABLE [bdb07d241] 2024-12-19 13:13:31 +1300
Branch: REL_13_STABLE [2c7887c9d] 2024-12-19 13:13:51 +1300
-->
     <para>
      Fix assertion failure in <literal>WITH RECURSIVE ... UNION</literal>
      queries (David Rowley)
      <ulink url="&commit_baseurl;2c7887c9d">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [94131cd53] 2024-11-20 12:03:47 -0500
Branch: REL_17_STABLE [fea81aee8] 2024-11-20 12:03:47 -0500
Branch: REL_16_STABLE [fe084039e] 2024-11-20 12:03:47 -0500
Branch: REL_15_STABLE [9b9689e26] 2024-11-20 12:03:47 -0500
Branch: REL_14_STABLE [3eb26524c] 2024-11-20 12:03:47 -0500
Branch: REL_13_STABLE [630520c22] 2024-11-20 12:03:47 -0500
-->
     <para>
      Avoid assertion failure in rule deparsing if a set operation leaf
      query contains set operations (Man Zeng, Tom Lane)
      <ulink url="&commit_baseurl;630520c22">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [3eea7a0c9] 2024-12-09 14:38:19 -0500
Branch: REL_17_STABLE [556f7b7bc] 2024-12-09 14:38:19 -0500
Branch: REL_16_STABLE [bb649b553] 2024-12-09 14:38:19 -0500
Branch: REL_15_STABLE [4089b9bd6] 2024-12-09 14:38:19 -0500
Branch: REL_14_STABLE [8a95ad3b2] 2024-12-09 14:38:19 -0500
Branch: REL_13_STABLE [4d20bad5e] 2024-12-09 14:38:19 -0500
-->
     <para>
      Avoid edge-case assertion failure in parallel query startup (Tom Lane)
      <ulink url="&commit_baseurl;4d20bad5e">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: REL_13_STABLE [a722252ef] 2025-01-09 10:14:11 +1300
-->
     <para>
      Avoid rare assertion failure during relation truncation (Heikki
      Linnakangas)
      <ulink url="&commit_baseurl;a722252ef">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [5b8728cd7] 2024-11-25 18:09:09 -0500
Branch: REL_17_STABLE [97be02ad0] 2024-11-25 18:09:10 -0500
Branch: REL_16_STABLE [4aba56adc] 2024-11-25 18:09:10 -0500
Branch: REL_15_STABLE [80cd33bad] 2024-11-25 18:09:10 -0500
Branch: REL_14_STABLE [a1168855e] 2024-11-25 18:09:10 -0500
Branch: REL_13_STABLE [48a6cd1ae] 2024-11-25 18:09:11 -0500
-->
     <para>
      In <function>NULLIF()</function>, avoid passing a read-write
      expanded object pointer to the data type's equality function
      (Tom Lane)
      <ulink url="&commit_baseurl;48a6cd1ae">&sect;</ulink>
     </para>

     <para>
      The equality function could modify or delete the object if it's
      given a read-write pointer, which would be bad if we decide to
      return it as the <function>NULLIF()</function> result.  There is
      probably no problem with any built-in equality function, but it's
      easy to demonstrate a failure with one coded in PL/pgSQL.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [29dfffae0] 2025-01-11 11:45:56 -0500
Branch: REL_17_STABLE [e98df02df] 2025-01-11 11:45:56 -0500
Branch: REL_16_STABLE [33a4e656d] 2025-01-11 11:45:56 -0500
Branch: REL_15_STABLE [71bb9c4b2] 2025-01-11 11:45:56 -0500
Branch: REL_14_STABLE [bcb4db0d3] 2025-01-11 11:45:56 -0500
Branch: REL_13_STABLE [02a38bc84] 2025-01-11 11:45:56 -0500
-->
     <para>
      Repair memory leaks in PL/Python (Mat Arye, Tom Lane)
      <ulink url="&commit_baseurl;02a38bc84">&sect;</ulink>
     </para>

     <para>
      Repeated use of <function>PLyPlan.execute</function>
      or <function>plpy.cursor</function> resulted in memory leakage for
      the duration of the calling PL/Python function.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [32a2aa77e] 2024-11-25 11:44:29 +0100
Branch: REL_17_STABLE [f979197eb] 2024-11-25 12:27:10 +0100
Branch: REL_16_STABLE [07c77803c] 2024-11-25 12:27:19 +0100
Branch: REL_15_STABLE [a5f9cbde9] 2024-11-25 12:27:26 +0100
Branch: REL_14_STABLE [17d081a6f] 2024-11-25 13:11:18 +0100
Branch: REL_13_STABLE [f230e27a2] 2024-11-25 13:11:49 +0100
-->
     <para>
      Fix PL/Tcl to compile with Tcl 9 (Peter Eisentraut)
      <ulink url="&commit_baseurl;f230e27a2">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [2f696453d] 2024-12-01 14:15:37 -0500
Branch: REL_17_STABLE [a963abd54] 2024-12-01 14:15:37 -0500
Branch: REL_16_STABLE [cca34f68c] 2024-12-01 14:15:37 -0500
Branch: REL_15_STABLE [60b47525c] 2024-12-01 14:15:37 -0500
Branch: REL_14_STABLE [52c7a44e9] 2024-12-01 14:15:37 -0500
Branch: REL_13_STABLE [e359cbb84] 2024-12-01 14:15:37 -0500
-->
     <para>
      In the <application>ecpg</application> preprocessor, fix possible
      misprocessing of cursors that reference out-of-scope variables
      (Tom Lane)
      <ulink url="&commit_baseurl;e359cbb84">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [94b914f60] 2025-01-15 01:23:02 +0900
Branch: REL_17_STABLE [ba2dbedd5] 2025-01-15 01:24:24 +0900
Branch: REL_16_STABLE [5c7c34db2] 2025-01-15 01:25:05 +0900
Branch: REL_15_STABLE [71ef47cf0] 2025-01-15 01:25:19 +0900
Branch: REL_14_STABLE [d06ab3c0c] 2025-01-15 01:25:31 +0900
Branch: REL_13_STABLE [226c9048d] 2025-01-15 01:25:52 +0900
-->
     <para>
      In <application>ecpg</application>, fix compile-time warnings about
      unsupported use of <literal>COPY ... FROM STDIN</literal> (Ryo
      Kanbayashi)
      <ulink url="&commit_baseurl;226c9048d">&sect;</ulink>
     </para>

     <para>
      Previously, the intended warning was not issued due to a typo.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [6cddecdfb] 2025-01-29 14:24:36 -0500
Branch: REL_17_STABLE [0b713b94b] 2025-01-29 14:24:36 -0500
Branch: REL_16_STABLE [998c4fc7c] 2025-01-29 14:24:36 -0500
Branch: REL_15_STABLE [b17e3970c] 2025-01-29 14:24:36 -0500
Branch: REL_14_STABLE [54f9afea7] 2025-01-29 14:24:36 -0500
Branch: REL_13_STABLE [98df8bace] 2025-01-29 14:24:36 -0500
-->
     <para>
      Fix <application>psql</application> to safely handle file path names
      that are encoded in SJIS (Tom Lane)
      <ulink url="&commit_baseurl;98df8bace">&sect;</ulink>
     </para>

     <para>
      Some two-byte characters in SJIS have a second byte that is equal to
      ASCII backslash (<literal>\</literal>).  These characters were
      corrupted by path name normalization, preventing access to files
      whose names include such characters.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9a45a89c3] 2025-01-14 18:50:24 -0500
Branch: REL_17_STABLE [a0dfeae0d] 2025-01-14 18:50:24 -0500
Branch: REL_16_STABLE [b935691b8] 2025-01-14 18:50:24 -0500
Branch: REL_15_STABLE [a3b709cf7] 2025-01-14 18:50:24 -0500
Branch: REL_14_STABLE [02e69313a] 2025-01-14 18:50:24 -0500
Branch: REL_13_STABLE [cfd7aadeb] 2025-01-14 18:50:24 -0500
-->
     <para>
      Fix use of wrong version of <function>pqsignal()</function>
      in <application>pgbench</application>
      and <application>psql</application> (Fujii Masao, Tom Lane)
      <ulink url="&commit_baseurl;cfd7aadeb">&sect;</ulink>
     </para>

     <para>
      This error could lead to misbehavior when using
      the <option>-T</option> option in <application>pgbench</application>
      or the <command>\watch</command> command
      in <application>psql</application>, due to interrupted system calls
      not being resumed as expected.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [530f89e64] 2024-12-15 14:14:14 -0500
Branch: REL_17_STABLE [ff9dc96f3] 2024-12-15 14:14:15 -0500
Branch: REL_16_STABLE [076b09123] 2024-12-15 14:14:15 -0500
Branch: REL_15_STABLE [ff88db910] 2024-12-15 14:14:15 -0500
Branch: REL_14_STABLE [2a23dbcf3] 2024-12-15 14:14:15 -0500
Branch: REL_13_STABLE [ec0dc2c59] 2024-12-15 14:14:15 -0500
-->
     <para>
      Fix misexecution of some nested <command>\if</command> constructs
      in <application>pgbench</application> (Michail Nikolaev)
      <ulink url="&commit_baseurl;ec0dc2c59">&sect;</ulink>
     </para>

     <para>
      An <command>\if</command> command appearing within a false
      (not-being-executed) <command>\if</command> branch was incorrectly
      treated the same as <command>\elif</command>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [af35fe501] 2024-11-27 23:01:53 +0900
Branch: REL_17_STABLE [adb103fca] 2024-11-27 23:03:04 +0900
Branch: REL_16_STABLE [1cf646957] 2024-11-27 23:03:44 +0900
Branch: REL_15_STABLE [1e46f7351] 2024-11-27 23:04:29 +0900
Branch: REL_14_STABLE [0f13e1a78] 2024-11-27 23:04:55 +0900
Branch: REL_13_STABLE [f1cb5e51f] 2024-11-27 23:05:24 +0900
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [fb056564e] 2025-02-07 13:41:42 -0500
Branch: REL_17_STABLE [e35d396ec] 2025-02-07 13:41:42 -0500
Branch: REL_16_STABLE [21b815f92] 2025-02-07 13:41:42 -0500
Branch: REL_15_STABLE [499d1cf55] 2025-02-07 13:41:43 -0500
Branch: REL_14_STABLE [5addea71c] 2025-02-07 13:41:43 -0500
Branch: REL_13_STABLE [b6decfc1d] 2025-02-07 13:41:43 -0500
-->
     <para>
      In <application>pgbench</application>, fix possible misdisplay of
      progress messages during table initialization (Yushi Ogiwara, Tatsuo
      Ishii, Fujii Masao)
      <ulink url="&commit_baseurl;f1cb5e51f">&sect;</ulink>
      <ulink url="&commit_baseurl;b6decfc1d">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
Branch: master [ff1975ddd] 2025-02-05 00:45:49 +0200
Branch: REL_17_STABLE [1b8a9533f] 2025-02-05 00:45:43 +0200
Branch: REL_16_STABLE [d54d5668b] 2025-02-05 00:45:37 +0200
Branch: REL_15_STABLE [f1e0b078b] 2025-02-05 00:45:29 +0200
Branch: REL_14_STABLE [f2205448b] 2025-02-05 00:45:16 +0200
Branch: REL_13_STABLE [c24311c1f] 2025-02-05 00:46:06 +0200
-->
     <para>
      Make <application>pg_controldata</application> more robust against
      corrupted <filename>pg_control</filename> files (Ilyasov Ian, Anton
      Voloshin)
      <ulink url="&commit_baseurl;c24311c1f">&sect;</ulink>
     </para>

     <para>
      Since <application>pg_controldata</application> will attempt to
      print the contents of <filename>pg_control</filename> even if the
      CRC check fails, it must take care not to misbehave for invalid
      field values.  This patch fixes some issues triggered by invalid
      timestamps and apparently-negative WAL segment sizes.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [7b8cb9cd6] 2024-12-13 14:21:36 -0500
Branch: REL_17_STABLE [ad950ea98] 2024-12-13 14:21:36 -0500
Branch: REL_16_STABLE [782cc1aa3] 2024-12-13 14:21:36 -0500
Branch: REL_15_STABLE [6978129b4] 2024-12-13 14:21:36 -0500
Branch: REL_14_STABLE [c7f3c414f] 2024-12-13 14:21:36 -0500
Branch: REL_13_STABLE [b6df2d6e5] 2024-12-13 14:21:36 -0500
-->
     <para>
      Fix possible crash in <application>pg_dump</application> with
      identity sequences attached to tables that are extension members
      (Tom Lane)
      <ulink url="&commit_baseurl;b6df2d6e5">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [970b97eeb] 2025-01-09 16:04:23 +1300
Branch: REL_17_STABLE [faee3185a] 2025-01-09 16:05:01 +1300
Branch: REL_16_STABLE [be7489662] 2025-01-09 16:05:08 +1300
Branch: REL_15_STABLE [6b6901a26] 2025-01-09 16:05:16 +1300
Branch: REL_14_STABLE [8f40d4612] 2025-01-09 16:05:25 +1300
Branch: REL_13_STABLE [bd0564f61] 2025-01-09 16:05:36 +1300
Branch: master [026762dae] 2025-01-09 15:00:58 +1300
Branch: REL_17_STABLE [af109e339] 2025-01-09 15:00:23 +1300
Branch: REL_16_STABLE [0bff6f1da] 2025-01-09 14:59:47 +1300
Branch: REL_15_STABLE [70a7a3761] 2025-01-09 14:58:18 +1300
Branch: REL_14_STABLE [1636c5e56] 2025-01-09 14:57:52 +1300
Branch: REL_13_STABLE [d02486cc8] 2025-01-09 14:57:02 +1300
-->
     <para>
      Fix <application>pg_basebackup</application> to correctly
      handle <filename>pg_wal.tar</filename> files exceeding 2GB on
      Windows (Davinder Singh, Thomas Munro)
      <ulink url="&commit_baseurl;bd0564f61">&sect;</ulink>
      <ulink url="&commit_baseurl;d02486cc8">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [5980f1884] 2024-11-25 12:50:17 -0500
Branch: REL_17_STABLE [e266a0ed6] 2024-11-25 12:50:17 -0500
Branch: REL_16_STABLE [1f4aadec4] 2024-11-25 12:50:17 -0500
Branch: REL_15_STABLE [851c6ff18] 2024-11-25 12:50:17 -0500
Branch: REL_14_STABLE [2fc0199a5] 2024-11-25 12:50:17 -0500
Branch: REL_13_STABLE [32057a0f7] 2024-11-25 12:50:17 -0500
-->
     <para>
      Update configuration probes that determine the compiler switches
      needed to access ARM CRC instructions (Tom Lane)
      <ulink url="&commit_baseurl;32057a0f7">&sect;</ulink>
     </para>

     <para>
      On ARM platforms where the baseline CPU target lacks CRC
      instructions, we need to supply a <option>-march</option> switch to
      persuade the compiler to compile such instructions.  Recent versions
      of gcc reject the value we were trying, leading to silently falling
      back to software CRC.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: REL_15_STABLE [f00c401c6] 2024-11-27 15:43:18 +1300
Branch: REL_14_STABLE [1fd57e5bb] 2024-11-27 15:48:13 +1300
Branch: REL_13_STABLE [59ea17c43] 2024-11-27 15:52:15 +1300
Branch: REL_12_STABLE [3f302f0ed] 2024-11-27 15:57:32 +1300
Branch: REL_11_STABLE [170e41603] 2024-11-27 16:04:22 +1300
Branch: REL_10_STABLE [f4e8f137b] 2024-11-27 16:47:29 +1300
Branch: REL9_6_STABLE [70cf253d1] 2024-11-27 16:13:59 +1300
Branch: REL9_5_STABLE [5b40ce749] 2024-11-27 16:17:20 +1300
Branch: REL9_4_STABLE [b1b8b8e6f] 2024-11-27 16:19:42 +1300
Branch: REL9_3_STABLE [102be6634] 2024-11-27 16:28:34 +1300
Branch: REL9_2_STABLE [0c7171b32] 2024-11-27 16:31:41 +1300
-->
     <para>
      During <application>configure</application>, if a C23 compiler is
      detected, try asking for C17 (Thomas Munro)
      <ulink url="&commit_baseurl;59ea17c43">&sect;</ulink>
     </para>

     <para>
      <productname>PostgreSQL</productname> versions before v16 will not
      compile under C23 rules.  If the chosen compiler defaults to C23 or
      later, try adding a <literal>-std=gnu17</literal> switch to change
      that.  (If this won't work for your compiler, manually
      specify <varname>CFLAGS</varname> with a suitable switch.)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [60c513f8f] 2025-01-20 16:49:15 -0500
Branch: REL_17_STABLE [e292ba333] 2025-01-20 16:49:15 -0500
Branch: REL_16_STABLE [d62403c51] 2025-01-20 16:49:15 -0500
Branch: REL_15_STABLE [48bc95d0d] 2025-01-20 16:49:15 -0500
Branch: REL_14_STABLE [20b4819d0] 2025-01-20 16:49:15 -0500
Branch: REL_13_STABLE [6397819c8] 2025-01-20 16:49:15 -0500
-->
     <para>
      Update time zone data files to <application>tzdata</application>
      release 2025a for DST law changes in Paraguay, plus historical
      corrections for the Philippines (Tom Lane)
      <ulink url="&commit_baseurl;6397819c8">&sect;</ulink>
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-18">
  <title>Release 13.18</title>

  <formalpara>
  <title>Release date:</title>
  <para>2024-11-21</para>
  </formalpara>

  <para>
   This release contains a few fixes from 13.17.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.18</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you are upgrading from a version earlier than 13.17,
    see <xref linkend="release-13-17"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [7b88529f4] 2024-11-15 20:39:56 -0800
Branch: REL_17_STABLE [1c05004a8] 2024-11-15 20:39:59 -0800
Branch: REL_16_STABLE [b0918c128] 2024-11-15 20:39:59 -0800
Branch: REL_15_STABLE [edf80895f] 2024-11-15 20:39:59 -0800
Branch: REL_14_STABLE [be062bfa5] 2024-11-15 20:40:00 -0800
Branch: REL_13_STABLE [07c6e0f61] 2024-11-15 20:40:00 -0800
Branch: REL_12_STABLE [c46333865] 2024-11-15 20:40:00 -0800
-->
     <para>
      Restore functionality of <command>ALTER {ROLE|DATABASE} SET
      role</command> (Tom Lane, Noah Misch)
      <ulink url="&commit_baseurl;07c6e0f61">&sect;</ulink>
     </para>

     <para>
      The fix for CVE-2024-10978 accidentally caused settings
      for <varname>role</varname> to not be applied if they come from
      non-interactive sources, including previous <command>ALTER
      {ROLE|DATABASE}</command> commands and
      the <varname>PGOPTIONS</varname> environment variable.
     </para>
    </listitem>

    <listitem>
<!--
Author: Masahiko Sawada <msawada@postgresql.org>
Branch: master [e5ed873b1] 2024-11-15 17:06:11 -0800
Branch: REL_17_STABLE [568e78a65] 2024-11-15 17:06:08 -0800
Branch: REL_16_STABLE [f35391133] 2024-11-15 17:06:05 -0800
Branch: REL_15_STABLE [91771b3fb] 2024-11-15 17:06:02 -0800
Branch: REL_14_STABLE [26c4e8968] 2024-11-15 17:06:00 -0800
Branch: REL_13_STABLE [15dc1abb1] 2024-11-15 17:05:57 -0800
-->
     <para>
      Fix cases where a logical replication
      slot's <structfield>restart_lsn</structfield> could go backwards
      (Masahiko Sawada)
      <ulink url="&commit_baseurl;15dc1abb1">&sect;</ulink>
     </para>

     <para>
      Previously, restarting logical replication could sometimes cause the
      slot's restart point to be recomputed as an older value than had
      previously been advertised
      in <structname>pg_replication_slots</structname>.  This is bad,
      since for example WAL files might have been removed on the basis of
      the later <structfield>restart_lsn</structfield> value, in which
      case replication would fail to restart.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Geoghegan <pg@bowt.ie>
Branch: master [93063e2e4] 2024-11-12 20:57:45 -0500
Branch: REL_17_STABLE [7af6d1306] 2024-11-12 20:57:43 -0500
Branch: REL_16_STABLE [05aac2e83] 2024-11-12 20:57:41 -0500
Branch: REL_15_STABLE [16a2bb079] 2024-11-12 20:57:39 -0500
Branch: REL_14_STABLE [2a30b6836] 2024-11-12 20:57:37 -0500
Branch: REL_13_STABLE [e493ea866] 2024-11-12 20:57:35 -0500
-->
     <para>
      Count index scans in <filename>contrib/bloom</filename> indexes in
      the statistics views, such as the
      <structname>pg_stat_user_indexes</structname>.<structfield>idx_scan</structfield>
      counter (Masahiro Ikeda)
      <ulink url="&commit_baseurl;e493ea866">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
Branch: master [db22b9002] 2024-11-12 01:44:20 +0200
Branch: REL_17_STABLE [a6fa869cf] 2024-11-12 01:51:20 +0200
Branch: REL_16_STABLE [b242aba02] 2024-11-12 01:53:40 +0200
Branch: REL_15_STABLE [713b8546a] 2024-11-12 01:54:30 +0200
Branch: REL_14_STABLE [247e7647f] 2024-11-12 01:54:35 +0200
Branch: REL_13_STABLE [5411e8213] 2024-11-12 01:54:38 +0200
-->
     <para>
      Fix crash when checking to see if an index's opclass options have
      changed (Alexander Korotkov)
      <ulink url="&commit_baseurl;5411e8213">&sect;</ulink>
     </para>

     <para>
      Some forms of <command>ALTER TABLE</command> would fail if the
      table has an index with non-default operator class options.
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-17">
  <title>Release 13.17</title>

  <formalpara>
  <title>Release date:</title>
  <para>2024-11-14</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.16.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.17</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you have ever detached a partition from a partitioned
    table that has a foreign-key reference to another partitioned table,
    and not dropped the former partition, then you may have catalog and/or
    data corruption to repair, as detailed in the fifth changelog entry
    below.
   </para>

   <para>
    Also, if you are upgrading from a version earlier than 13.14,
    see <xref linkend="release-13-14"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Nathan Bossart <nathan@postgresql.org>
Branch: master [cd7ab5753] 2024-11-11 09:00:00 -0600
Branch: REL_17_STABLE [edcda9bb4] 2024-11-11 09:00:00 -0600
Branch: REL_16_STABLE [562289460] 2024-11-11 09:00:00 -0600
Branch: REL_15_STABLE [6db5ea8de] 2024-11-11 09:00:00 -0600
Branch: REL_14_STABLE [4e51030af] 2024-11-11 09:00:00 -0600
Branch: REL_13_STABLE [952ff31e2] 2024-11-11 09:00:00 -0600
Branch: REL_12_STABLE [448525e8a] 2024-11-11 09:00:00 -0600
-->
     <para>
      Ensure cached plans are marked as dependent on the calling role when
      RLS applies to a non-top-level table reference (Nathan Bossart)
      <ulink url="&commit_baseurl;952ff31e2">&sect;</ulink>
     </para>

     <para>
      If a CTE, subquery, sublink, security invoker view, or coercion
      projection in a query references a table with row-level security
      policies, we neglected to mark the resulting plan as potentially
      dependent on which role is executing it.  This could lead to later
      query executions in the same session using the wrong plan, and then
      returning or hiding rows that should have been hidden or returned
      instead.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Wolfgang Walther for reporting this problem.
      (CVE-2024-10976)
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [bf8835ea9] 2024-11-11 10:19:52 +0900
Branch: REL_17_STABLE [a5cc4c667] 2024-11-11 10:19:56 +0900
Branch: REL_16_STABLE [67d28bd02] 2024-11-11 10:19:58 +0900
Branch: REL_15_STABLE [d2c3e31c1] 2024-11-11 10:19:59 +0900
Branch: REL_14_STABLE [e6c945476] 2024-11-11 10:20:01 +0900
Branch: REL_13_STABLE [7b49707b7] 2024-11-11 10:20:02 +0900
Branch: REL_12_STABLE [2a951ef0a] 2024-11-11 10:20:03 +0900
-->
     <para>
      Make <application>libpq</application> discard error messages
      received during SSL or GSS protocol negotiation (Jacob Champion)
      <ulink url="&commit_baseurl;7b49707b7">&sect;</ulink>
     </para>

     <para>
      An error message received before encryption negotiation is completed
      might have been injected by a man-in-the-middle, rather than being
      real server output.  Reporting it opens the door to various security
      hazards; for example, the message might spoof a query result that a
      careless user could mistake for correct output.  The best answer
      seems to be to discard such data and rely only
      on <application>libpq</application>'s own report of the connection
      failure.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Jacob Champion for reporting this problem.
      (CVE-2024-10977)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [5a2fed911] 2024-11-11 10:29:54 -0500
Branch: REL_17_STABLE [cd82afdda] 2024-11-11 10:29:54 -0500
Branch: REL_16_STABLE [ae340d031] 2024-11-11 10:29:54 -0500
Branch: REL_15_STABLE [a5d2e6205] 2024-11-11 10:29:54 -0500
Branch: REL_14_STABLE [2a68808e2] 2024-11-11 10:29:54 -0500
Branch: REL_13_STABLE [76123ded6] 2024-11-11 10:29:54 -0500
Branch: REL_12_STABLE [4c9d96f74] 2024-11-11 10:29:54 -0500
Branch: master [73c9f91a1] 2024-11-11 17:05:53 -0500
Branch: REL_17_STABLE [f4f5d27d8] 2024-11-11 17:05:53 -0500
Branch: REL_16_STABLE [95f5a5237] 2024-11-11 17:05:53 -0500
Branch: REL_15_STABLE [109a32380] 2024-11-11 17:05:53 -0500
Branch: REL_14_STABLE [00b94e8e2] 2024-11-11 17:05:53 -0500
Branch: REL_13_STABLE [dc7378793] 2024-11-11 17:05:53 -0500
Branch: REL_12_STABLE [0edad8654] 2024-11-11 17:05:53 -0500
-->
     <para>
      Fix unintended interactions between <command>SET SESSION
      AUTHORIZATION</command> and <command>SET ROLE</command> (Tom Lane)
      <ulink url="&commit_baseurl;76123ded6">&sect;</ulink>
      <ulink url="&commit_baseurl;dc7378793">&sect;</ulink>
     </para>

     <para>
      The SQL standard mandates that <command>SET SESSION
      AUTHORIZATION</command> have a side-effect of doing <command>SET
      ROLE NONE</command>.  Our implementation of that was flawed,
      creating more interaction between the two settings than intended.
      Notably, rolling back a transaction that had done <command>SET
      SESSION AUTHORIZATION</command> would revert <literal>ROLE</literal>
      to <literal>NONE</literal> even if that had not been the previous
      state, so that the effective user ID might now be different from
      what it had been before the transaction.  Transiently
      setting <varname>session_authorization</varname> in a
      function <literal>SET</literal> clause had a similar effect.
      A related bug was that if a parallel worker
      inspected <literal>current_setting('role')</literal>, it
      saw <literal>none</literal> even when it should see something else.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Tom Lane for reporting this problem.
      (CVE-2024-10978)
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [b7e3a52a8] 2024-11-11 06:23:43 -0800
Branch: REL_17_STABLE [3ebcfa54d] 2024-11-11 06:23:46 -0800
Branch: REL_16_STABLE [8fe3e697a] 2024-11-11 06:23:47 -0800
Branch: REL_15_STABLE [e530835c6] 2024-11-11 06:23:47 -0800
Branch: REL_14_STABLE [d15ec27c9] 2024-11-11 06:23:47 -0800
Branch: REL_13_STABLE [e428cd058] 2024-11-11 06:23:48 -0800
Branch: REL_12_STABLE [2ab12d860] 2024-11-11 06:23:48 -0800
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL_14_STABLE [f89bd92c9] 2024-11-11 10:42:32 -0500
Branch: REL_13_STABLE [6bccd7b03] 2024-11-11 10:42:32 -0500
Branch: REL_12_STABLE [b1e58defb] 2024-11-11 10:42:32 -0500
Branch: master [a34c33fd2] 2024-11-11 12:20:08 -0500
Branch: REL_17_STABLE [4cd4f3b97] 2024-11-11 12:20:08 -0500
Branch: REL_16_STABLE [88269df4d] 2024-11-11 12:20:08 -0500
Branch: REL_16_STABLE [168579e23] 2024-11-11 12:27:06 -0500
Author: Noah Misch <noah@leadboat.com>
Branch: REL_16_STABLE [c335264c9] 2024-11-11 10:55:18 -0800
Branch: REL_15_STABLE [16ed4f4d0] 2024-11-11 10:56:05 -0800
Branch: REL_14_STABLE [c1fff7b1b] 2024-11-11 10:56:09 -0800
Branch: REL_13_STABLE [9f97c31c2] 2024-11-11 10:56:12 -0800
Branch: REL_12_STABLE [1e457468f] 2024-11-11 10:56:14 -0800
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c4252c9ef] 2024-11-11 13:57:21 -0500
Branch: REL_17_STABLE [8d19f3fea] 2024-11-11 13:57:21 -0500
Branch: REL_16_STABLE [64df88700] 2024-11-11 13:57:40 -0500
Branch: REL_15_STABLE [c834b375a] 2024-11-11 13:57:41 -0500
Branch: REL_14_STABLE [256e34653] 2024-11-11 13:57:41 -0500
Branch: REL_13_STABLE [0bd9560d9] 2024-11-11 13:57:41 -0500
Branch: REL_12_STABLE [9fc1c3a02] 2024-11-11 13:57:41 -0500
-->
     <para>
      Prevent trusted PL/Perl code from changing environment variables
      (Andrew Dunstan, Noah Misch)
      <ulink url="&commit_baseurl;e428cd058">&sect;</ulink>
      <ulink url="&commit_baseurl;6bccd7b03">&sect;</ulink>
      <ulink url="&commit_baseurl;9f97c31c2">&sect;</ulink>
      <ulink url="&commit_baseurl;0bd9560d9">&sect;</ulink>
     </para>

     <para>
      The ability to manipulate process environment variables such
      as <literal>PATH</literal> gives an attacker opportunities to
      execute arbitrary code.  Therefore, <quote>trusted</quote> PLs must
      not offer the ability to do that.  To fix <literal>plperl</literal>,
      replace <varname>%ENV</varname> with a tied hash that rejects any
      modification attempt with a warning.
      Untrusted <literal>plperlu</literal> retains the ability to change
      the environment.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Coby Abrams for reporting this problem.
      (CVE-2024-10979)
     </para>
    </listitem>

    <listitem>
<!--
Author: Álvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [53af9491a] 2024-10-22 16:01:18 +0200
Branch: REL_17_STABLE [5914a22f6] 2024-10-22 16:01:18 +0200
Branch: REL_16_STABLE [2aaf2a28b] 2024-10-22 16:01:18 +0200
Branch: REL_15_STABLE [5d83bad6b] 2024-10-22 16:01:18 +0200
Branch: REL_14_STABLE [46a8c27a7] 2024-10-22 16:01:18 +0200
Branch: REL_13_STABLE [d20194cea] 2024-10-22 16:01:18 +0200
Branch: master [2d5fe5140] 2024-10-30 10:54:03 +0100
Branch: REL_17_STABLE [936ab6de9] 2024-10-30 10:54:03 +0100
Branch: REL_16_STABLE [f7d510a38] 2024-10-30 10:54:03 +0100
Branch: REL_15_STABLE [1b216fcef] 2024-10-30 10:54:03 +0100
-->
     <para>
      Fix updates of catalog state for foreign-key constraints when
      attaching or detaching table partitions (Jehan-Guillaume de
      Rorthais, Tender Wang, Álvaro Herrera)
      <ulink url="&commit_baseurl;d20194cea">&sect;</ulink>
     </para>

     <para>
      If the referenced table is partitioned, then different catalog
      entries are needed for a referencing table that is stand-alone
      versus one that is a partition.  <literal>ATTACH/DETACH
      PARTITION</literal> commands failed to perform this conversion
      correctly.  In particular, after <literal>DETACH</literal> the now
      stand-alone table would be missing foreign-key enforcement triggers,
      which could result in the table later containing rows that fail the
      foreign-key constraint.  A subsequent re-<literal>ATTACH</literal>
      could fail with surprising errors, too.
     </para>

     <para>
      The way to fix this is to do <command>ALTER TABLE DROP
      CONSTRAINT</command> on the now stand-alone table for each faulty
      constraint, and then re-add the constraint.  If re-adding the
      constraint fails, then some erroneous data has crept in.  You will
      need to manually re-establish consistency between the referencing
      and referenced tables, then re-add the constraint.
     </para>

     <para>
      This query can be used to identify broken constraints and construct
      the commands needed to recreate them:
<programlisting>
SELECT conrelid::pg_catalog.regclass AS "constrained table",
       conname AS constraint,
       confrelid::pg_catalog.regclass AS "references",
       pg_catalog.format('ALTER TABLE %s DROP CONSTRAINT %I;',
                         conrelid::pg_catalog.regclass, conname) AS "drop",
       pg_catalog.format('ALTER TABLE %s ADD CONSTRAINT %I %s;',
                         conrelid::pg_catalog.regclass, conname,
                         pg_catalog.pg_get_constraintdef(oid)) AS "add"
FROM pg_catalog.pg_constraint c
WHERE contype = 'f' AND conparentid = 0 AND
   (SELECT count(*) FROM pg_catalog.pg_constraint c2
    WHERE c2.conparentid = c.oid) &lt;&gt;
   ((SELECT count(*) FROM pg_catalog.pg_inherits i
    WHERE (i.inhparent = c.conrelid OR i.inhparent = c.confrelid) AND
      EXISTS (SELECT 1 FROM pg_catalog.pg_partitioned_table
              WHERE partrelid = i.inhparent)) +
    CASE WHEN pg_catalog.pg_partition_root(conrelid) = confrelid THEN
              (SELECT count(*) FROM pg_catalog.pg_partition_tree(confrelid)
                WHERE level = 1)
         ELSE 0 END);
</programlisting>
      Since it is possible that one or more of the <literal>ADD
      CONSTRAINT</literal> steps will fail, you should save the query's
      output in a file and then attempt to perform each step.
     </para>
    </listitem>

    <listitem>
<!--
Author: Álvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [a90bdd7a4] 2024-08-08 19:35:13 -0400
Branch: REL_17_STABLE Release: REL_17_0 [344f9f5e2] 2024-08-08 19:35:13 -0400
Branch: REL_16_STABLE [ada34d714] 2024-08-08 19:35:13 -0400
Branch: REL_15_STABLE [8c0944ac8] 2024-08-08 19:35:13 -0400
Branch: REL_14_STABLE [e97121d90] 2024-08-08 19:35:13 -0400
Branch: REL_13_STABLE [2ee02c98d] 2024-08-08 19:35:13 -0400
Branch: REL_12_STABLE [17ed92e1f] 2024-08-08 19:35:13 -0400
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: REL_16_STABLE [57c8b8726] 2024-11-08 07:17:55 +0100
Branch: REL_15_STABLE [38f506470] 2024-11-08 07:31:48 +0100
Branch: REL_14_STABLE [a54a5c426] 2024-11-08 07:32:07 +0100
Branch: REL_13_STABLE [ebbfa2ae3] 2024-11-08 07:32:14 +0100
Branch: REL_12_STABLE [cae459d11] 2024-11-08 07:32:21 +0100
-->
     <para>
      Disallow <command>ALTER TABLE ATTACH PARTITION</command> if the
      table to be attached has a foreign key referencing the partitioned
      table (Álvaro Herrera)
      <ulink url="&commit_baseurl;2ee02c98d">&sect;</ulink>
      <ulink url="&commit_baseurl;ebbfa2ae3">&sect;</ulink>
     </para>

     <para>
      This arrangement is not supported, and other ways of creating it
      already fail.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Langote <amitlan@postgresql.org>
Branch: master [075acdd93] 2024-11-08 17:25:24 +0900
Branch: REL_17_STABLE [a0cdfc889] 2024-11-08 17:19:35 +0900
Branch: REL_16_STABLE [f734b6b4d] 2024-11-08 17:19:13 +0900
Branch: REL_15_STABLE [33040b171] 2024-11-08 17:18:55 +0900
Branch: REL_14_STABLE [62df5484f] 2024-11-08 17:18:38 +0900
Branch: REL_13_STABLE [054701a2b] 2024-11-08 17:18:21 +0900
Branch: REL_12_STABLE [9c4757491] 2024-11-08 17:18:04 +0900
Branch: master [90fe6251c] 2024-11-08 16:07:22 +0900
Branch: REL_17_STABLE [b6484ca95] 2024-11-08 16:07:13 +0900
Branch: REL_16_STABLE [dd2f8ebee] 2024-11-08 16:07:05 +0900
Branch: REL_15_STABLE [0a620659c] 2024-11-08 16:06:58 +0900
Branch: REL_14_STABLE [96f9b29a3] 2024-11-08 16:06:46 +0900
Branch: REL_13_STABLE [ff65f695c] 2024-11-08 16:06:12 +0900
Branch: REL_12_STABLE [46d9be5ef] 2024-11-08 16:05:33 +0900
-->
     <para>
      Don't use partitionwise joins or grouping if the query's collation
      for the key column doesn't match the partition key's collation (Jian
      He, Webbo Han)
      <ulink url="&commit_baseurl;054701a2b">&sect;</ulink>
      <ulink url="&commit_baseurl;ff65f695c">&sect;</ulink>
     </para>

     <para>
      Such plans could produce incorrect results.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9f954177b] 2024-10-12 14:56:08 -0400
Branch: REL_17_STABLE [54889ea64] 2024-10-12 14:56:08 -0400
Branch: REL_16_STABLE [64635c8af] 2024-10-12 14:56:08 -0400
Branch: REL_15_STABLE [4f3bccbaa] 2024-10-12 14:56:08 -0400
Branch: REL_14_STABLE [4ca708eb3] 2024-10-12 14:56:08 -0400
Branch: REL_13_STABLE [76de4b182] 2024-10-12 14:56:08 -0400
-->
     <para>
      Fix possible <quote>could not find pathkey item to sort</quote>
      error when the output of a <literal>UNION ALL</literal> member query
      needs to be sorted, and the sort column is an expression (Andrei
      Lepikhov, Tom Lane)
      <ulink url="&commit_baseurl;76de4b182">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [fae55f0bb] 2024-09-13 16:17:04 -0400
Branch: REL_17_STABLE Release: REL_17_0 [418c6a2c7] 2024-09-13 16:17:04 -0400
Branch: REL_16_STABLE [d23109f4b] 2024-09-13 16:16:47 -0400
Branch: REL_15_STABLE [e0857898b] 2024-09-13 16:16:47 -0400
Branch: REL_14_STABLE [b49013f2e] 2024-09-13 16:16:47 -0400
Branch: REL_13_STABLE [b27215dbb] 2024-09-13 16:16:47 -0400
Branch: REL_12_STABLE [813ade548] 2024-09-13 16:16:47 -0400
-->
     <para>
      Allow cancellation of the second stage of index build for large hash
      indexes (Pavel Borisov)
      <ulink url="&commit_baseurl;b27215dbb">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [68ad9816c] 2024-10-21 15:08:22 -0400
Branch: REL_17_STABLE [3685ad618] 2024-10-21 15:08:22 -0400
Branch: REL_16_STABLE [6c3b2d204] 2024-10-21 15:08:22 -0400
Branch: REL_15_STABLE [c80a1e048] 2024-10-21 15:08:22 -0400
Branch: REL_14_STABLE [5e94f616c] 2024-10-21 15:08:22 -0400
Branch: REL_13_STABLE [beab395a4] 2024-10-21 15:08:22 -0400
Branch: REL_12_STABLE [6a57a457c] 2024-10-21 15:08:22 -0400
-->
     <para>
      Fix assertion failure or confusing error message for <literal>COPY
      (<replaceable>query</replaceable>) TO ...</literal>, when
      the <replaceable>query</replaceable> is rewritten by a <literal>DO
      INSTEAD NOTIFY</literal> rule (Tender Wang, Tom Lane)
      <ulink url="&commit_baseurl;beab395a4">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [98c7c7152] 2024-10-17 22:11:59 +1300
Branch: REL_17_STABLE [4ac5d33a8] 2024-10-17 22:10:29 +1300
Branch: REL_16_STABLE [53edc9485] 2024-10-17 22:08:13 +1300
Branch: REL_15_STABLE [1831545ca] 2024-10-17 22:04:05 +1300
Branch: REL_14_STABLE [20d948994] 2024-10-17 22:01:54 +1300
Branch: REL_13_STABLE [45329466f] 2024-10-17 22:00:38 +1300
Branch: REL_12_STABLE [4fa80a6d7] 2024-10-17 22:00:16 +1300
-->
     <para>
      Fix detection of skewed data during parallel hash join (Thomas
      Munro)
      <ulink url="&commit_baseurl;45329466f">&sect;</ulink>
     </para>

     <para>
      After repartitioning the inner side of a hash join because one
      partition has accumulated too many tuples, we check to see if all
      the partition's tuples went into the same child partition, which
      suggests that they all have the same hash value and further
      repartitioning cannot improve matters.  This check malfunctioned in
      some cases, allowing repeated futile repartitioning which would
      eventually end in a resource-exhaustion error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [1a43de5e0] 2024-10-21 09:49:21 +0300
Branch: REL_17_STABLE [234f6d09e] 2024-10-21 09:49:29 +0300
Branch: REL_16_STABLE [22665f210] 2024-10-21 09:49:32 +0300
Branch: REL_15_STABLE [d97419b85] 2024-10-21 09:49:35 +0300
Branch: REL_14_STABLE [520ec2474] 2024-10-21 09:49:38 +0300
Branch: REL_13_STABLE [8e607a5a4] 2024-10-21 09:49:41 +0300
Branch: REL_12_STABLE [e2ec3afeb] 2024-10-21 09:49:50 +0300
-->
     <para>
      Fix race condition in committing a serializable transaction (Heikki
      Linnakangas)
      <ulink url="&commit_baseurl;8e607a5a4">&sect;</ulink>
     </para>

     <para>
      Mis-processing of a recently committed transaction could lead to an
      assertion failure or a <quote>could not access status of
      transaction</quote> error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [cf4401fe6] 2024-10-01 15:44:03 +0900
Branch: REL_17_STABLE [f250cb29d] 2024-10-01 15:44:07 +0900
Branch: REL_16_STABLE [7de9b64a5] 2024-10-01 15:44:09 +0900
Branch: REL_15_STABLE [41ab45680] 2024-10-01 15:44:11 +0900
Branch: REL_14_STABLE [5f1510787] 2024-10-01 15:44:12 +0900
Branch: REL_13_STABLE [7bfaa4671] 2024-10-01 15:44:14 +0900
Branch: REL_12_STABLE [34d751ba7] 2024-10-01 15:44:15 +0900
-->
     <para>
      Fix race condition in <command>COMMIT PREPARED</command>
      that resulted in orphaned 2PC files (wuchengwen)
      <ulink url="&commit_baseurl;7bfaa4671">&sect;</ulink>
     </para>

     <para>
      A concurrent <command>PREPARE TRANSACTION</command> could
      cause <command>COMMIT PREPARED</command> to not remove the on-disk
      two-phase state file for the completed transaction.  There was no
      immediate ill effect, but a subsequent crash-and-recovery could fail
      with <quote>could not access status of transaction</quote>,
      requiring manual removal of the orphaned file to restore service.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [09620ea09] 2024-09-27 09:40:09 +0900
Branch: REL_17_STABLE [1532599a8] 2024-09-27 09:40:14 +0900
Branch: REL_16_STABLE [afbd3dc7d] 2024-09-27 09:40:16 +0900
Branch: REL_15_STABLE [a613edc5c] 2024-09-27 09:40:18 +0900
Branch: REL_14_STABLE [6530b869c] 2024-09-27 09:40:19 +0900
Branch: REL_13_STABLE [911eda9f3] 2024-09-27 09:40:21 +0900
Branch: REL_12_STABLE [2f33e68a5] 2024-09-27 09:40:22 +0900
-->
     <para>
      Avoid invalid memory accesses after skipping an invalid toast index
      during <command>VACUUM FULL</command> (Tender Wang)
      <ulink url="&commit_baseurl;911eda9f3">&sect;</ulink>
     </para>

     <para>
      A list tracking yet-to-be-rebuilt indexes was not properly updated
      in this code path, risking assertion failures or crashes later on.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [a07e03fd8] 2024-09-24 15:25:18 -0700
Branch: REL_17_STABLE [fd27b878c] 2024-09-24 15:25:21 -0700
Branch: REL_16_STABLE [63f019805] 2024-09-24 15:25:22 -0700
Branch: REL_15_STABLE [8590c942c] 2024-09-24 15:25:23 -0700
Branch: REL_14_STABLE [82c2d9e02] 2024-09-24 15:25:23 -0700
Branch: REL_13_STABLE [a8ad1929d] 2024-09-24 15:25:24 -0700
Branch: REL_12_STABLE [7354b680a] 2024-09-24 15:25:25 -0700
Branch: master [aac2c9b4f] 2024-09-24 15:25:18 -0700
Branch: REL_17_STABLE [3b7a689e1] 2024-09-24 15:25:22 -0700
Branch: REL_16_STABLE [51ff46de2] 2024-09-24 15:25:22 -0700
Branch: REL_15_STABLE [5c837f8fa] 2024-09-24 15:25:23 -0700
Branch: REL_14_STABLE [f51b34b3e] 2024-09-24 15:25:23 -0700
Branch: REL_13_STABLE [14c57cb63] 2024-09-24 15:25:24 -0700
Branch: REL_12_STABLE [cafcc3ad0] 2024-09-24 15:25:25 -0700
Branch: master [0d5a3d757] 2024-09-29 15:54:25 -0700
Branch: REL_17_STABLE [da99df15c] 2024-09-29 15:54:28 -0700
Branch: REL_16_STABLE [4c922821e] 2024-09-29 15:54:28 -0700
Branch: REL_15_STABLE [159bf0f31] 2024-09-29 15:54:29 -0700
Branch: REL_14_STABLE [b9ee1339b] 2024-09-29 15:54:29 -0700
Branch: REL_13_STABLE [db1992455] 2024-09-29 15:54:29 -0700
Branch: REL_12_STABLE [5a33a39a8] 2024-09-29 15:54:30 -0700
Branch: master [e947224cb] 2024-10-24 09:16:14 -0700
Branch: REL_17_STABLE [e11907682] 2024-10-24 09:16:17 -0700
Branch: REL_16_STABLE [2d63c964f] 2024-10-24 09:16:18 -0700
Branch: REL_15_STABLE [d34ffbaa1] 2024-10-24 09:16:18 -0700
Branch: REL_14_STABLE [ad24b7565] 2024-10-24 09:16:19 -0700
Branch: REL_13_STABLE [3e5ea478d] 2024-10-24 09:16:19 -0700
Branch: REL_12_STABLE [a0c0078b1] 2024-10-24 09:16:20 -0700
Branch: master [30d47ec8c] 2024-10-29 09:39:55 -0700
Branch: REL_17_STABLE [9aef6f19a] 2024-10-29 09:39:58 -0700
Branch: REL_16_STABLE [370bc7740] 2024-10-29 09:39:58 -0700
Branch: REL_15_STABLE [0fe002d0c] 2024-10-29 09:39:59 -0700
Branch: REL_14_STABLE [11e3f288f] 2024-10-29 09:39:59 -0700
Branch: REL_13_STABLE [2a912bc1a] 2024-10-29 09:40:00 -0700
Branch: REL_12_STABLE [c2139db11] 2024-10-29 09:40:00 -0700
Branch: master [b412f402d] 2024-11-02 09:04:55 -0700
Branch: REL_17_STABLE [0bcb9d079] 2024-11-02 09:05:00 -0700
Branch: REL_16_STABLE [6c837c237] 2024-11-02 09:05:02 -0700
Branch: REL_15_STABLE [6d5b4031b] 2024-11-02 09:05:04 -0700
Branch: REL_14_STABLE [bb3054297] 2024-11-02 09:05:05 -0700
Branch: REL_13_STABLE [6b01cac0b] 2024-11-02 09:05:07 -0700
Branch: REL_12_STABLE [d729f1ea5] 2024-11-02 09:05:08 -0700
Branch: master [825c72c07] 2024-11-02 19:42:52 -0700
Branch: REL_17_STABLE [54bc22fbf] 2024-11-02 19:42:55 -0700
Branch: REL_16_STABLE [f8f9110b4] 2024-11-02 19:42:56 -0700
Branch: REL_15_STABLE [d14e94ac4] 2024-11-02 19:42:56 -0700
Branch: REL_14_STABLE [803655e66] 2024-11-02 19:42:57 -0700
Branch: REL_13_STABLE [4dc0c933f] 2024-11-02 19:42:57 -0700
Branch: REL_12_STABLE [766809db3] 2024-11-02 19:42:58 -0700
-->
     <para>
      Fix ways in which an <quote>in place</quote> catalog update could be
      lost (Noah Misch)
      <ulink url="&commit_baseurl;a8ad1929d">&sect;</ulink>
      <ulink url="&commit_baseurl;14c57cb63">&sect;</ulink>
      <ulink url="&commit_baseurl;db1992455">&sect;</ulink>
      <ulink url="&commit_baseurl;3e5ea478d">&sect;</ulink>
      <ulink url="&commit_baseurl;2a912bc1a">&sect;</ulink>
      <ulink url="&commit_baseurl;6b01cac0b">&sect;</ulink>
      <ulink url="&commit_baseurl;4dc0c933f">&sect;</ulink>
     </para>

     <para>
      Normal row updates write a new version of the row to preserve
      rollback-ability of the transaction.  However, certain system
      catalog updates are intentionally non-transactional and are done
      with an in-place update of the row.  These patches fix race
      conditions that could cause the effects of an in-place update to be
      lost.  As an example, it was possible to forget having set
      <structname>pg_class</structname>.<structfield>relhasindex</structfield>
      to true, preventing updates of the new index and thus causing index
      corruption.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: REL_17_STABLE [a4668c99f] 2024-10-25 06:51:06 -0700
Branch: REL_16_STABLE [d36b4d8ec] 2024-10-25 06:51:06 -0700
Branch: REL_15_STABLE [3baf804b7] 2024-10-25 06:51:07 -0700
Branch: REL_14_STABLE [dca68242a] 2024-10-25 06:51:07 -0700
Branch: REL_13_STABLE [67f30c79a] 2024-10-25 06:51:08 -0700
Branch: REL_12_STABLE [da9950456] 2024-10-25 06:51:08 -0700
-->
     <para>
      Reset catalog caches at end of recovery (Noah Misch)
      <ulink url="&commit_baseurl;67f30c79a">&sect;</ulink>
     </para>

     <para>
      This prevents scenarios wherein an in-place catalog update could be
      lost due to using stale data from a catalog cache.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [ac04aa84a] 2024-09-17 19:53:11 -0700
Branch: REL_17_STABLE Release: REL_17_0 [2370582ab] 2024-09-17 19:54:25 -0700
Branch: REL_16_STABLE [6f6521de9] 2024-09-17 19:54:25 -0700
Branch: REL_15_STABLE [884860bfc] 2024-09-17 19:54:26 -0700
Branch: REL_14_STABLE [5c698e898] 2024-09-17 19:54:26 -0700
Branch: REL_13_STABLE [916b8ae47] 2024-09-17 19:54:26 -0700
Branch: REL_12_STABLE [507b72bd9] 2024-09-17 19:54:26 -0700
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [b8df69049] 2024-11-08 13:42:10 -0500
Branch: REL_17_STABLE [943b65358] 2024-11-08 13:42:01 -0500
Branch: REL_16_STABLE [06424e9a2] 2024-11-08 13:42:01 -0500
Branch: REL_15_STABLE [bcbdb176e] 2024-11-08 13:42:01 -0500
Branch: REL_14_STABLE [989ccd26c] 2024-11-08 13:42:01 -0500
Branch: REL_13_STABLE [62685876f] 2024-11-08 13:42:01 -0500
Branch: REL_12_STABLE [6e39ca6e7] 2024-11-08 13:42:01 -0500
-->
     <para>
      Avoid using parallel query while holding off interrupts
      (Francesco Degrassi, Noah Misch, Tom Lane)
      <ulink url="&commit_baseurl;916b8ae47">&sect;</ulink>
      <ulink url="&commit_baseurl;62685876f">&sect;</ulink>
     </para>

     <para>
      This situation cannot arise normally, but it can be reached with
      test scenarios such as using a SQL-language function as B-tree
      support (which would be far too slow for production usage).  If it
      did occur it would result in an indefinite wait.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d5622acb3] 2024-09-15 13:33:09 -0400
Branch: REL_17_STABLE Release: REL_17_0 [b9645dca1] 2024-09-15 13:33:09 -0400
Branch: REL_16_STABLE [4c9bf947a] 2024-09-15 13:33:09 -0400
Branch: REL_15_STABLE [634804885] 2024-09-15 13:33:09 -0400
Branch: REL_14_STABLE [7721fff06] 2024-09-15 13:33:09 -0400
Branch: REL_13_STABLE [4310dfa25] 2024-09-15 13:33:09 -0400
Branch: REL_12_STABLE [0206795d2] 2024-09-15 13:33:09 -0400
-->
     <para>
      Guard against stack overflow in <application>libxml2</application>
      with too-deeply-nested XML input (Tom Lane, with hat tip to Nick
      Wellnhofer)
      <ulink url="&commit_baseurl;4310dfa25">&sect;</ulink>
     </para>

     <para>
      Use <function>xmlXPathCtxtCompile()</function> rather
      than <function>xmlXPathCompile()</function>, because the latter
      fails to protect itself against recursion-to-stack-overflow
      in <application>libxml2</application> releases before 2.13.4.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [b2be5cb2a] 2024-08-11 12:24:56 -0400
Branch: REL_17_STABLE Release: REL_17_0 [aed881386] 2024-08-11 12:24:56 -0400
Branch: REL_16_STABLE [9db6650a5] 2024-08-11 12:24:56 -0400
Branch: REL_15_STABLE [16e67bc5f] 2024-08-11 12:24:56 -0400
Branch: REL_14_STABLE [bc5446a21] 2024-08-11 12:24:56 -0400
Branch: REL_13_STABLE [016f44364] 2024-08-11 12:24:56 -0400
Branch: master [b919a97a6] 2024-08-09 11:21:39 -0400
Branch: REL_17_STABLE Release: REL_17_0 [81a12a447] 2024-08-09 11:21:39 -0400
Branch: REL_16_STABLE [03f679475] 2024-08-09 11:21:39 -0400
Branch: REL_15_STABLE [12010f414] 2024-08-09 11:21:39 -0400
Branch: REL_14_STABLE [120dd0337] 2024-08-09 11:21:39 -0400
Branch: REL_13_STABLE [3ad35d502] 2024-08-09 11:21:39 -0400
Branch: REL_12_STABLE [7408772de] 2024-08-09 11:21:39 -0400
-->
     <para>
      Fix <quote>failed to find plan for subquery/CTE</quote> errors
      in <command>EXPLAIN</command> (Richard Guo, Tom Lane)
      <ulink url="&commit_baseurl;016f44364">&sect;</ulink>
      <ulink url="&commit_baseurl;3ad35d502">&sect;</ulink>
     </para>

     <para>
      This case arose while trying to print references to fields of a
      RECORD-type output of a subquery when the subquery has been
      optimized out of the plan altogether (which is possible at least in
      the case that it has a constant-false <literal>WHERE</literal>
      condition).  Nothing remains in the plan to identify the original
      field names, so fall back to
      printing <literal>f<replaceable>N</replaceable></literal> for
      the <replaceable>N</replaceable>'th record column.  (That's actually
      the right thing anyway, if the record output arose from
      a <literal>ROW()</literal> constructor.)
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [4d68a0432] 2024-08-29 09:06:15 +0200
Branch: REL_17_STABLE Release: REL_17_0 [fdbf7e46a] 2024-08-29 08:59:30 +0200
Branch: REL_16_STABLE [5867ee005] 2024-08-29 09:00:06 +0200
Branch: REL_15_STABLE [cf49a606c] 2024-08-29 09:01:02 +0200
Branch: REL_14_STABLE [ecd19a3cc] 2024-08-29 09:01:33 +0200
Branch: REL_13_STABLE [7589d5c5b] 2024-08-29 09:02:06 +0200
Branch: REL_12_STABLE [1c57ae795] 2024-08-29 09:03:06 +0200
-->
     <para>
      Disallow a <literal>USING</literal> clause when altering the type of
      a generated column (Peter Eisentraut)
      <ulink url="&commit_baseurl;7589d5c5b">&sect;</ulink>
     </para>

     <para>
      A generated column already has an expression specifying the column
      contents, so including <literal>USING</literal> doesn't make sense.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [f8d9a9f21] 2024-10-06 16:03:48 -0400
Branch: REL_17_STABLE [3daeb539a] 2024-10-06 16:03:48 -0400
Branch: REL_16_STABLE [5de77b609] 2024-10-06 16:03:48 -0400
Branch: REL_15_STABLE [aef75219c] 2024-10-06 16:03:48 -0400
Branch: REL_14_STABLE [3922c9e9f] 2024-10-06 16:03:48 -0400
Branch: REL_13_STABLE [4a17acd0d] 2024-10-06 16:03:48 -0400
Branch: REL_12_STABLE [5c17f5a63] 2024-10-06 16:03:48 -0400
-->
     <para>
      Ignore not-yet-defined Portals in
      the <structname>pg_cursors</structname> view (Tom Lane)
      <ulink url="&commit_baseurl;4a17acd0d">&sect;</ulink>
     </para>

     <para>
      It is possible for user-defined code that inspects this view to be
      called while a new cursor is being set up, and if that happens a
      null pointer dereference would ensue.  Avoid the problem by defining
      the view to exclude incompletely-set-up cursors.
     </para>
    </listitem>

    <listitem>
<!--
Author: Masahiko Sawada <msawada@postgresql.org>
Branch: master [1b9b6cc34] 2024-10-16 12:08:05 -0700
Branch: REL_17_STABLE [eef9cc4dc] 2024-10-16 12:08:02 -0700
Branch: REL_16_STABLE [05e982cdc] 2024-10-16 12:08:00 -0700
Branch: REL_15_STABLE [4a675f318] 2024-10-16 12:07:58 -0700
Branch: REL_14_STABLE [5c1ed0a51] 2024-10-16 12:07:55 -0700
Branch: REL_13_STABLE [cb988b04d] 2024-10-16 12:07:52 -0700
Branch: REL_12_STABLE [53fa68b3b] 2024-10-16 12:07:50 -0700
-->
     <para>
      Reduce memory consumption of logical decoding (Masahiko Sawada)
      <ulink url="&commit_baseurl;cb988b04d">&sect;</ulink>
     </para>

     <para>
      Use a smaller default block size to store tuple data received during
      logical replication.  This reduces memory wastage, which has been
      reported to be severe while processing long-running transactions,
      even leading to out-of-memory failures.
     </para>
    </listitem>

    <listitem>
<!--
Author: Daniel Gustafsson <dgustafsson@postgresql.org>
Branch: master [4fdb6558c] 2024-08-19 12:55:11 +0200
Branch: REL_17_STABLE Release: REL_17_0 [19021d28c] 2024-08-19 12:55:11 +0200
Branch: REL_16_STABLE [9333174af] 2024-08-19 12:55:11 +0200
Branch: REL_15_STABLE [23c200940] 2024-08-19 12:55:11 +0200
Branch: REL_14_STABLE [8cea8c023] 2024-08-19 12:55:11 +0200
Branch: REL_13_STABLE [f925b7f65] 2024-08-19 12:55:11 +0200
Branch: REL_12_STABLE [cd98a142c] 2024-08-19 12:55:11 +0200
-->
     <para>
      Re-disable sending of stateless (TLSv1.2) session tickets
      (Daniel Gustafsson)
      <ulink url="&commit_baseurl;f925b7f65">&sect;</ulink>
     </para>

     <para>
      A previous change to prevent sending of stateful (TLSv1.3) session
      tickets accidentally re-enabled sending of stateless ones.  Thus,
      while we intended to prevent clients from thinking that TLS session
      resumption is supported, some still did.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [0f92b230f] 2024-08-19 00:04:48 +0200
Branch: REL_17_STABLE Release: REL_17_0 [d1da80115] 2024-08-19 00:05:23 +0200
Branch: REL_16_STABLE [545794515] 2024-08-19 00:05:42 +0200
Branch: REL_15_STABLE [df9c5fb58] 2024-08-19 00:06:03 +0200
Branch: REL_14_STABLE [b3bb1e24b] 2024-08-19 00:06:23 +0200
Branch: REL_13_STABLE [33c615f76] 2024-08-19 00:07:04 +0200
Branch: REL_12_STABLE [f18d3e47f] 2024-08-19 00:07:20 +0200
Branch: master [5cb902e9d] 2024-08-19 13:31:51 +0200
Branch: REL_17_STABLE Release: REL_17_0 [de8770b47] 2024-08-19 13:43:27 +0200
Branch: REL_16_STABLE [f6991cafa] 2024-08-19 13:43:43 +0200
Branch: REL_15_STABLE [e498d22e2] 2024-08-19 14:00:50 +0200
Branch: REL_14_STABLE [3acbe198e] 2024-08-19 13:47:07 +0200
Branch: REL_13_STABLE [4e7531fda] 2024-08-19 13:49:23 +0200
Branch: REL_12_STABLE [9d42627bc] 2024-08-19 13:49:36 +0200
-->
     <para>
      Avoid <quote>wrong tuple length</quote> failure when dropping a
      database with many ACL (permission) entries (Ayush Tiwari)
      <ulink url="&commit_baseurl;33c615f76">&sect;</ulink>
      <ulink url="&commit_baseurl;4e7531fda">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [364de74cf] 2024-08-10 15:51:30 -0400
Branch: REL_17_STABLE Release: REL_17_0 [2b8d33f66] 2024-08-10 15:51:28 -0400
Branch: REL_16_STABLE [f3ab5d3a2] 2024-08-10 15:51:28 -0400
Branch: REL_15_STABLE [2f4e895be] 2024-08-10 15:51:28 -0400
Branch: REL_14_STABLE [546a26b3d] 2024-08-10 15:51:28 -0400
Branch: REL_13_STABLE [adf9808fa] 2024-08-10 15:51:28 -0400
Branch: REL_12_STABLE [adc28d01e] 2024-08-10 15:51:28 -0400
-->
     <para>
      Allow adjusting the <varname>session_authorization</varname>
      and <varname>role</varname> settings in parallel workers (Tom Lane)
      <ulink url="&commit_baseurl;adf9808fa">&sect;</ulink>
     </para>

     <para>
      Our code intends to allow modifiable server settings to be set by
      function <literal>SET</literal> clauses, but not otherwise within a
      parallel worker.  <literal>SET</literal> clauses failed for these
      two settings, though.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c96de42c4] 2024-10-16 17:36:40 -0400
Branch: REL_17_STABLE [b5eef7539] 2024-10-16 17:36:29 -0400
Branch: REL_16_STABLE [25d639eea] 2024-10-16 17:36:29 -0400
Branch: REL_15_STABLE [b35231989] 2024-10-16 17:36:29 -0400
Branch: REL_14_STABLE [ab13c46ff] 2024-10-16 17:36:30 -0400
Branch: REL_13_STABLE [0d83ced3c] 2024-10-16 17:36:30 -0400
Branch: REL_12_STABLE [cf1443d67] 2024-10-16 17:36:30 -0400
-->
     <para>
      Fix behavior of stable functions called from
      a <command>CALL</command> statement's argument list, when
      the <command>CALL</command> is within a
      PL/pgSQL <literal>EXCEPTION</literal> block (Tom Lane)
      <ulink url="&commit_baseurl;0d83ced3c">&sect;</ulink>
     </para>

     <para>
      As with a similar fix in our previous quarterly releases, this case
      allowed such functions to be passed the wrong snapshot, causing them
      to see stale values of rows modified since the start of the outer
      transaction.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [920d51979] 2024-10-02 17:30:36 -0400
Branch: REL_17_STABLE [c7a201053] 2024-10-02 17:30:36 -0400
Branch: REL_16_STABLE [65f431aff] 2024-10-02 17:30:36 -0400
Branch: REL_15_STABLE [bb8c89dbc] 2024-10-02 17:30:36 -0400
Branch: REL_14_STABLE [e7af9b52f] 2024-10-02 17:30:36 -0400
Branch: REL_13_STABLE [2120eda94] 2024-10-02 17:30:36 -0400
Branch: REL_12_STABLE [47d8a15de] 2024-10-02 17:30:36 -0400
-->
     <para>
      Parse <application>libpq</application>'s <literal>keepalives</literal>
      connection option in the same way as other integer-valued options
      (Yuto Sasaki)
      <ulink url="&commit_baseurl;2120eda94">&sect;</ulink>
     </para>

     <para>
      The coding used here rejected trailing whitespace in the option
      value, unlike other cases.  This turns out to be problematic
      in <application>ecpg</application>'s usage, for example.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [5388216f6] 2024-08-07 09:21:07 +0200
Branch: REL_17_STABLE Release: REL_17_0 [e9e05c655] 2024-08-08 07:41:02 +0200
Branch: REL_16_STABLE [ee2997c67] 2024-08-08 07:42:21 +0200
Branch: REL_15_STABLE [2de129b35] 2024-08-08 07:42:31 +0200
Branch: REL_14_STABLE [355718553] 2024-08-08 07:42:44 +0200
Branch: REL_13_STABLE [f0096ef13] 2024-08-08 07:42:46 +0200
-->
     <para>
      Avoid use of <function>pnstrdup()</function>
      in <application>ecpglib</application> (Jacob Champion)
      <ulink url="&commit_baseurl;f0096ef13">&sect;</ulink>
     </para>

     <para>
      That function will call <function>exit()</function> on
      out-of-memory, which is undesirable in a library.  The calling code
      already handles allocation failures properly.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [a0bff38d1] 2024-10-23 08:33:54 +0900
Branch: REL_17_STABLE [2c37cb26f] 2024-10-23 08:35:00 +0900
Branch: REL_16_STABLE [a1e613b81] 2024-10-23 08:35:02 +0900
Branch: REL_15_STABLE [335501fb2] 2024-10-23 08:35:04 +0900
Branch: REL_14_STABLE [9a51d4af1] 2024-10-23 08:35:05 +0900
Branch: REL_13_STABLE [fcafbaadf] 2024-10-23 08:35:07 +0900
Branch: REL_12_STABLE [9ecfd8a48] 2024-10-23 08:35:08 +0900
-->
     <para>
      In <application>ecpglib</application>, fix out-of-bounds read when
      parsing incorrect datetime input (Bruce Momjian, Pavel Nekrasov)
      <ulink url="&commit_baseurl;fcafbaadf">&sect;</ulink>
     </para>

     <para>
      It was possible to try to read the location just before the start of
      a constant array.  Real-world consequences seem minimal, though.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [49dc191bd] 2024-08-08 10:20:25 +0300
Branch: REL_17_STABLE Release: REL_17_0 [a7bf3e668] 2024-08-08 10:21:12 +0300
Branch: REL_16_STABLE [e8240dbd8] 2024-08-08 10:22:49 +0300
Branch: REL_15_STABLE [b5a5027c9] 2024-08-08 10:22:45 +0300
Branch: REL_14_STABLE [bb5592cac] 2024-08-08 10:22:39 +0300
Branch: REL_13_STABLE [c943e2aae] 2024-08-08 10:22:30 +0300
Branch: REL_12_STABLE [8b86e289f] 2024-08-08 10:22:04 +0300
-->
     <para>
      Include the source timeline history
      in <application>pg_rewind</application>'s debug output
      (Heikki Linnakangas)
      <ulink url="&commit_baseurl;c943e2aae">&sect;</ulink>
     </para>

     <para>
      This was the intention to begin with, but a coding error caused the
      source history to always print as empty.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: REL_15_STABLE [b9d4a927d] 2024-11-08 09:30:09 +1030
Branch: REL_14_STABLE [02a4ec478] 2024-11-08 09:36:10 +1030
Branch: REL_13_STABLE [fa56aa23f] 2024-11-08 09:45:40 +1030
Branch: REL_15_STABLE [f95ad555d] 2024-11-08 09:29:40 +1030
Branch: REL_14_STABLE [ca9921936] 2024-11-08 09:36:53 +1030
Branch: REL_15_STABLE [f2a4a137b] 2024-11-08 09:29:15 +1030
Branch: REL_14_STABLE [8a5e4982f] 2024-11-08 09:36:40 +1030
Branch: REL_13_STABLE [bb509a464] 2024-11-08 09:46:39 +1030
Branch: REL_15_STABLE [b73c1496d] 2024-11-08 09:27:25 +1030
Branch: REL_14_STABLE [895f23d9e] 2024-11-08 09:36:27 +1030
Branch: REL_13_STABLE [ee219102d] 2024-11-08 09:45:58 +1030
Branch: REL_14_STABLE [ce14dbbca] 2024-11-08 09:35:45 +1030
Branch: REL_13_STABLE [5c0b7581b] 2024-11-08 09:45:22 +1030
Branch: REL_14_STABLE [1bf47d897] 2024-11-08 09:34:00 +1030
Branch: REL_13_STABLE [56b39cce7] 2024-11-08 09:44:46 +1030
Branch: REL_13_STABLE [b4363fc66] 2024-11-08 09:44:01 +1030
Branch: REL_13_STABLE [a5abacecb] 2024-11-08 09:42:21 +1030
Branch: REL_13_STABLE [f1cf64167] 2024-11-08 09:41:47 +1030
Branch: REL_13_STABLE [a9beed676] 2024-11-08 09:40:48 +1030
-->
     <para>
      Fix misbehavior with junction points on Windows, particularly
      in <application>pg_rewind</application> (Alexandra Wang)
      <ulink url="&commit_baseurl;fa56aa23f">&sect;</ulink>
      <ulink url="&commit_baseurl;bb509a464">&sect;</ulink>
      <ulink url="&commit_baseurl;ee219102d">&sect;</ulink>
      <ulink url="&commit_baseurl;5c0b7581b">&sect;</ulink>
      <ulink url="&commit_baseurl;56b39cce7">&sect;</ulink>
      <ulink url="&commit_baseurl;b4363fc66">&sect;</ulink>
      <ulink url="&commit_baseurl;a5abacecb">&sect;</ulink>
      <ulink url="&commit_baseurl;f1cf64167">&sect;</ulink>
      <ulink url="&commit_baseurl;a9beed676">&sect;</ulink>
     </para>

     <para>
      This entailed back-patching previous fixes by Thomas Munro, Peter
      Eisentraut, Alexander Lakhin, and Juan José Santamaría Flecha.
      Those changes were originally not back-patched out of caution, but
      they have been in use in later branches for long enough to deem
      them safe.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [1ab67c9df] 2024-09-25 14:43:16 +0900
Branch: REL_17_STABLE [85cb21df6] 2024-09-25 14:44:50 +0900
Branch: REL_16_STABLE [1ea4d9c00] 2024-09-25 14:44:53 +0900
Branch: REL_15_STABLE [74eaa0544] 2024-09-25 14:44:56 +0900
Branch: REL_14_STABLE [60c618216] 2024-09-25 14:44:57 +0900
Branch: REL_13_STABLE [9db4598c9] 2024-09-25 14:44:59 +0900
Branch: REL_12_STABLE [ef57a7135] 2024-09-25 14:45:01 +0900
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [20cfec896] 2024-09-30 11:13:55 +0900
Branch: REL_17_STABLE [77f154681] 2024-09-30 11:15:56 +0900
Branch: REL_16_STABLE [653ce5b8b] 2024-09-30 11:16:15 +0900
Branch: REL_15_STABLE [92cc21d15] 2024-09-30 11:16:21 +0900
Branch: REL_14_STABLE [88e1153cb] 2024-09-30 11:16:27 +0900
Branch: REL_13_STABLE [9410f7cbf] 2024-09-30 11:17:23 +0900
Author: Nathan Bossart <nathan@postgresql.org>
Branch: master [8318f2b17] 2024-10-07 16:49:20 -0500
Branch: REL_17_STABLE [5bd26e652] 2024-10-07 16:49:20 -0500
Branch: REL_16_STABLE [eba8cc1af] 2024-10-07 16:49:20 -0500
Branch: REL_15_STABLE [6d047c6a9] 2024-10-07 16:49:20 -0500
Branch: REL_14_STABLE [ce6f27857] 2024-10-07 16:49:20 -0500
Branch: REL_13_STABLE [d4ade0baf] 2024-10-07 16:49:20 -0500
Branch: REL_12_STABLE [5e0431c32] 2024-10-07 16:49:20 -0500
-->
     <para>
      Avoid trying to reindex temporary tables and indexes
      in <application>vacuumdb</application> and in
      parallel <application>reindexdb</application> (VaibhaveS, Michael
      Paquier, Fujii Masao, Nathan Bossart)
      <ulink url="&commit_baseurl;9db4598c9">&sect;</ulink>
      <ulink url="&commit_baseurl;9410f7cbf">&sect;</ulink>
      <ulink url="&commit_baseurl;d4ade0baf">&sect;</ulink>
     </para>

     <para>
      Reindexing other sessions' temporary tables cannot work, but the
      check to skip them was missing in some code paths, leading to
      unwanted failures.
     </para>
    </listitem>

    <listitem>
<!--
Author: Nathan Bossart <nathan@postgresql.org>
Branch: master [05036a315] 2024-09-12 16:31:29 -0500
Branch: REL_17_STABLE Release: REL_17_0 [6ea7f04b7] 2024-09-12 16:31:29 -0500
Branch: REL_16_STABLE [2bd4c06bb] 2024-09-12 16:31:29 -0500
Branch: REL_15_STABLE [e03042a70] 2024-09-12 16:31:29 -0500
Branch: REL_14_STABLE [8a94af8a2] 2024-09-12 16:31:29 -0500
Branch: REL_13_STABLE [ca902529c] 2024-09-12 16:31:29 -0500
Branch: REL_12_STABLE [dd5670fa5] 2024-09-12 16:31:29 -0500
Branch: master [70d1c664f] 2024-09-13 10:16:40 -0500
Branch: REL_17_STABLE Release: REL_17_0 [9b3c3c0fc] 2024-09-13 10:16:40 -0500
Branch: REL_16_STABLE [0938a4ecd] 2024-09-13 10:16:40 -0500
Branch: REL_15_STABLE [a63aef5e4] 2024-09-13 10:16:40 -0500
Branch: REL_14_STABLE [0970889e3] 2024-09-13 10:16:40 -0500
Branch: REL_13_STABLE [ef46a73f6] 2024-09-13 10:16:40 -0500
Branch: REL_12_STABLE [e0277d90a] 2024-09-13 10:16:40 -0500
-->
     <para>
      Allow inspection of sequence relations in relevant functions
      of <filename>contrib/pageinspect</filename>
      and <filename>contrib/pgstattuple</filename> (Nathan Bossart, Ayush
      Vatsa)
      <ulink url="&commit_baseurl;ca902529c">&sect;</ulink>
      <ulink url="&commit_baseurl;ef46a73f6">&sect;</ulink>
     </para>

     <para>
      This had been allowed in the past, but it got broken during the
      introduction of non-default access methods for tables.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [9044fc1d4] 2024-11-06 23:17:18 +1300
Branch: REL_17_STABLE [b7467ab71] 2024-11-06 23:07:34 +1300
Branch: REL_16_STABLE [ee67b73f5] 2024-11-06 23:09:03 +1300
Branch: REL_15_STABLE [19bf81c06] 2024-11-06 23:09:28 +1300
Branch: REL_14_STABLE [0b022ddf3] 2024-11-06 23:09:50 +1300
Branch: REL_13_STABLE [e88d824a4] 2024-11-06 23:10:05 +1300
Branch: REL_12_STABLE [50c1453a3] 2024-11-06 23:10:20 +1300
-->
     <para>
      Fix incorrect LLVM-generated code on ARM64 platforms (Thomas
      Munro, Anthonin Bonnefoy)
      <ulink url="&commit_baseurl;e88d824a4">&sect;</ulink>
     </para>

     <para>
      When using JIT compilation on ARM platforms, the generated code
      could not support relocation distances exceeding 32 bits, allowing
      unlucky placement of generated code to cause server crashes on
      large-memory systems.
     </para>
    </listitem>

    <listitem>
<!--
Author: Nathan Bossart <nathan@postgresql.org>
Branch: master [5d6187d2a] 2024-10-07 13:51:03 -0500
Branch: REL_17_STABLE [a356d23fd] 2024-10-07 13:51:03 -0500
Branch: REL_16_STABLE [8aaf88b63] 2024-10-07 13:51:03 -0500
Branch: REL_15_STABLE [01731eeea] 2024-10-07 13:51:03 -0500
Branch: REL_14_STABLE [5cea7168d] 2024-10-07 13:51:03 -0500
Branch: REL_13_STABLE [b255493ae] 2024-10-07 13:51:03 -0500
Branch: REL_12_STABLE [c91d0af0a] 2024-10-07 13:51:03 -0500
-->
     <para>
      Fix a few places that assumed that process start time (represented
      as a <type>time_t</type>) will fit into a <type>long</type> value
      (Max Johnson, Nathan Bossart)
      <ulink url="&commit_baseurl;b255493ae">&sect;</ulink>
     </para>

     <para>
      On platforms where <type>long</type> is 32 bits (notably Windows),
      this coding would fail after Y2038.  Most of the failures appear
      only cosmetic, but notably <literal>pg_ctl start</literal> would
      hang.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: REL_14_STABLE [ecf7c4846] 2024-08-07 11:43:34 -0700
Branch: REL_13_STABLE [382909b63] 2024-08-07 11:43:40 -0700
Branch: REL_12_STABLE [646b16bca] 2024-08-07 11:43:45 -0700
-->
     <para>
      Prevent <quote>nothing provides
      perl(PostgreSQL::Test::Utils)</quote> failures while building RPM
      packages of <productname>PostgreSQL</productname> (Noah Misch)
      <ulink url="&commit_baseurl;382909b63">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master [bc46104fc] 2024-09-14 08:47:06 -0400
Branch: REL_17_STABLE Release: REL_17_0 [648397b1d] 2024-09-14 08:48:04 -0400
Branch: REL_16_STABLE [0a0db4631] 2024-09-14 08:50:44 -0400
Branch: REL_15_STABLE [17c35ab23] 2024-09-14 09:17:51 -0400
Branch: REL_14_STABLE [9f7749464] 2024-09-14 09:19:04 -0400
Branch: REL_13_STABLE [f40d9e9f1] 2024-09-14 09:19:53 -0400
Branch: REL_12_STABLE [d94e3b33e] 2024-09-14 09:20:12 -0400
-->
     <para>
      Fix building with Strawberry Perl on Windows (Andrew Dunstan)
      <ulink url="&commit_baseurl;f40d9e9f1">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [502e7bf7f] 2024-10-29 11:49:38 -0400
Branch: REL_17_STABLE [cad65907e] 2024-10-29 11:49:50 -0400
Branch: REL_16_STABLE [a0c8d600b] 2024-10-29 11:49:56 -0400
Branch: REL_15_STABLE [74f70cb86] 2024-10-29 11:50:00 -0400
Branch: REL_14_STABLE [dedced73e] 2024-10-29 11:50:05 -0400
Branch: REL_13_STABLE [8a8486175] 2024-10-29 11:50:10 -0400
Branch: REL_12_STABLE [8f1759c9b] 2024-10-29 11:50:14 -0400
Branch: master [b8ea0f675] 2024-09-14 17:55:02 -0400
Branch: REL_17_STABLE Release: REL_17_0 [6283ff201] 2024-09-14 17:55:02 -0400
Branch: REL_16_STABLE [2abc88958] 2024-09-14 17:55:03 -0400
Branch: REL_15_STABLE [2b94ee58b] 2024-09-14 17:55:03 -0400
Branch: REL_14_STABLE [b27622c90] 2024-09-14 17:55:03 -0400
Branch: REL_13_STABLE [b28b9b19b] 2024-09-14 17:55:03 -0400
Branch: REL_12_STABLE [205813da4] 2024-09-14 17:55:03 -0400
-->
     <para>
      Update time zone data files to <application>tzdata</application>
      release 2024b (Tom Lane)
      <ulink url="&commit_baseurl;8a8486175">&sect;</ulink>
      <ulink url="&commit_baseurl;b28b9b19b">&sect;</ulink>
     </para>

     <para>
      This <application>tzdata</application> release changes the old
      System-V-compatibility zone names to duplicate the corresponding
      geographic zones; for example <literal>PST8PDT</literal> is now an
      alias for <literal>America/Los_Angeles</literal>.  The main visible
      consequence is that for timestamps before the introduction of
      standardized time zones, the zone is considered to represent local
      mean solar time for the named location.  For example,
      in <literal>PST8PDT</literal>, <type>timestamptz</type> input such
      as <literal>1801-01-01 00:00</literal> would previously have been
      rendered as <literal>1801-01-01 00:00:00-08</literal>, but now it is
      rendered as <literal>1801-01-01 00:00:00-07:52:58</literal>.
     </para>

     <para>
      Also, historical corrections for Mexico, Mongolia, and Portugal.
      Notably, <literal>Asia/Choibalsan</literal> is now an alias
      for <literal>Asia/Ulaanbaatar</literal> rather than being a separate
      zone, mainly because the differences between those zones were found to
      be based on untrustworthy data.
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-16">
  <title>Release 13.16</title>

  <formalpara>
  <title>Release date:</title>
  <para>2024-08-08</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.15.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.16</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you are upgrading from a version earlier than 13.14,
    see <xref linkend="release-13-14"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Masahiko Sawada <msawada@postgresql.org>
Branch: master [66e94448a] 2024-08-05 06:05:33 -0700
Branch: REL_17_STABLE [fdf218f1d] 2024-08-05 06:05:30 -0700
Branch: REL_16_STABLE [6aba85a4b] 2024-08-05 06:05:28 -0700
Branch: REL_15_STABLE [e81e53a0c] 2024-08-05 06:05:25 -0700
Branch: REL_14_STABLE [72ef1675e] 2024-08-05 06:05:23 -0700
Branch: REL_13_STABLE [bbc94abf6] 2024-08-05 06:05:20 -0700
Branch: REL_12_STABLE [79c7a7e29] 2024-08-05 06:05:17 -0700
-->
     <para>
      Prevent unauthorized code execution
      during <application>pg_dump</application> (Masahiko Sawada)
      <ulink url="&commit_baseurl;bbc94abf6">&sect;</ulink>
     </para>

     <para>
      An attacker able to create and drop non-temporary objects could
      inject SQL code that would be executed by a
      concurrent <application>pg_dump</application> session with the
      privileges of the role running <application>pg_dump</application>
      (which is often a superuser).  The attack involves replacing a
      sequence or similar object with a view or foreign table that will
      execute malicious code.  To prevent this, introduce a new server
      parameter <varname>restrict_nonsystem_relation_kind</varname> that
      can disable expansion of non-builtin views as well as access to
      foreign tables, and teach <application>pg_dump</application> to set
      it when available.  Note that the attack is prevented only if
      both <application>pg_dump</application> and the server it is dumping
      from are new enough to have this fix.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Noah Misch for reporting this problem.
      (CVE-2024-7348)
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [3dd637f3d] 2024-07-24 12:38:18 +0200
Branch: REL_17_STABLE [2b22543a4] 2024-07-24 12:38:18 +0200
Branch: REL_16_STABLE [084814d88] 2024-07-24 12:38:18 +0200
Branch: REL_15_STABLE [f74fac06c] 2024-07-24 12:38:18 +0200
Branch: REL_14_STABLE [fe1d16f66] 2024-07-24 12:38:18 +0200
Branch: REL_13_STABLE [ed7430975] 2024-07-24 12:38:18 +0200
Branch: REL_12_STABLE [08b6a9ecf] 2024-07-24 12:38:18 +0200
-->
     <para>
      Fix failure after attaching a table as a partition, if the
      table had previously had inheritance children
      (&Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;ed7430975">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [839177913] 2024-07-12 12:54:01 +0200
Branch: REL_17_STABLE [30ca4e1ab] 2024-07-12 12:54:01 +0200
Branch: REL_16_STABLE [00a40e33c] 2024-07-12 12:54:01 +0200
Branch: REL_15_STABLE [4ae09c59d] 2024-07-12 12:54:01 +0200
Branch: REL_14_STABLE [66aaa7a71] 2024-07-12 12:54:01 +0200
Branch: REL_13_STABLE [057482569] 2024-07-12 12:54:01 +0200
Branch: REL_12_STABLE [d0054432d] 2024-07-12 12:54:01 +0200
Branch: master [74e12db19] 2024-07-12 13:44:19 +0200
Branch: REL_17_STABLE [0340eefd9] 2024-07-12 13:44:19 +0200
Branch: REL_16_STABLE [34eb37f79] 2024-07-12 13:44:19 +0200
Branch: REL_15_STABLE [9f0f72d89] 2024-07-12 13:44:19 +0200
Branch: REL_14_STABLE [2f5007459] 2024-07-12 13:44:19 +0200
Branch: REL_13_STABLE [7898a494f] 2024-07-12 13:44:19 +0200
Branch: REL_12_STABLE [067cb6c5d] 2024-07-12 13:44:19 +0200
-->
     <para>
      Fix <command>ALTER TABLE DETACH PARTITION</command> for cases
      involving inconsistent index-based constraints
      (&Aacute;lvaro Herrera, Tender Wang)
      <ulink url="&commit_baseurl;057482569">&sect;</ulink>
      <ulink url="&commit_baseurl;7898a494f">&sect;</ulink>
     </para>

     <para>
      When a partitioned table has an index that is not associated with a
      constraint, but a partition has an equivalent index that is, then
      detaching the partition would misbehave, leaving the ex-partition's
      constraint with an incorrect <structfield>coninhcount</structfield>
      value.  This would cause trouble during any further manipulations of
      that constraint.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_17_BR [f535f350c] 2024-05-14 20:19:20 -0400
Branch: REL_16_STABLE [8e0e99972] 2024-05-14 20:19:20 -0400
Branch: REL_15_STABLE [c40e78d23] 2024-05-14 20:19:20 -0400
Branch: REL_14_STABLE [525bd1620] 2024-05-14 20:19:20 -0400
Branch: REL_13_STABLE [e85f641b2] 2024-05-14 20:19:20 -0400
Branch: REL_12_STABLE [70ffb27b2] 2024-05-14 20:19:20 -0400
Branch: master Release: REL_17_BR [751598263] 2024-06-06 15:16:56 -0400
Branch: REL_16_STABLE [bb331af4a] 2024-06-06 15:16:56 -0400
Branch: REL_15_STABLE [5fe43d41d] 2024-06-06 15:16:56 -0400
Branch: REL_14_STABLE [d88dcdf0f] 2024-06-06 15:16:56 -0400
Branch: REL_13_STABLE [9de0ff91a] 2024-06-06 15:16:56 -0400
Branch: REL_12_STABLE [4208f44c9] 2024-06-06 15:16:56 -0400
-->
     <para>
      Fix handling of polymorphic output arguments for procedures
      (Tom Lane)
      <ulink url="&commit_baseurl;e85f641b2">&sect;</ulink>
      <ulink url="&commit_baseurl;9de0ff91a">&sect;</ulink>
     </para>

     <para>
      The SQL <command>CALL</command> statement did not resolve the
      correct data types for such arguments, leading to errors such
      as <quote>cannot display a value of type anyelement</quote>, or even
      outright crashes.  (But <command>CALL</command>
      in <application>PL/pgSQL</application> worked correctly.)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_17_BR [2dc1deaea] 2024-06-07 13:27:26 -0400
Branch: REL_16_STABLE [0d18b8eb4] 2024-06-07 13:27:26 -0400
Branch: REL_15_STABLE [a160e9277] 2024-06-07 13:27:26 -0400
Branch: REL_14_STABLE [0f7d1338c] 2024-06-07 13:27:26 -0400
Branch: REL_13_STABLE [1d4ea1376] 2024-06-07 13:27:26 -0400
Branch: REL_12_STABLE [0be81dd71] 2024-06-07 13:27:26 -0400
-->
     <para>
      Fix behavior of stable functions called from
      a <command>CALL</command> statement's argument list (Tom Lane)
      <ulink url="&commit_baseurl;1d4ea1376">&sect;</ulink>
     </para>

     <para>
      If the <command>CALL</command> is within an atomic context
      (e.g. there's an outer transaction block), such functions were
      passed the wrong snapshot, causing them to see stale values of rows
      modified since the start of the outer transaction.
     </para>
    </listitem>

    <listitem>
<!--
Author: Nathan Bossart <nathan@postgresql.org>
Branch: master [22b0ccd65] 2024-07-19 11:52:32 -0500
Branch: REL_17_STABLE [3764ee47f] 2024-07-19 11:52:32 -0500
Branch: REL_16_STABLE [34e9dce69] 2024-07-19 11:52:32 -0500
Branch: REL_15_STABLE [b82791c8f] 2024-07-19 11:52:32 -0500
Branch: REL_14_STABLE [e8dfe0430] 2024-07-19 11:52:32 -0500
Branch: REL_13_STABLE [c5321e965] 2024-07-19 11:52:32 -0500
Branch: REL_12_STABLE [4f9628158] 2024-07-19 11:52:32 -0500
-->
     <para>
      Detect integer overflow in <type>money</type> calculations
      (Joseph Koshakow)
      <ulink url="&commit_baseurl;c5321e965">&sect;</ulink>
     </para>

     <para>
      None of the arithmetic functions for the <type>money</type> type
      checked for overflow before, so they would silently give wrong
      answers for overflowing cases.
     </para>
    </listitem>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [1ff39f4ff] 2024-07-08 17:48:45 +0100
Branch: REL_17_STABLE [7a8977d25] 2024-07-08 17:51:23 +0100
Branch: REL_16_STABLE [f7aec8c1d] 2024-07-08 17:52:52 +0100
Branch: REL_15_STABLE [47ca912de] 2024-07-08 17:54:22 +0100
Branch: REL_14_STABLE [a3c0124f6] 2024-07-08 17:55:31 +0100
Branch: REL_13_STABLE [ece296926] 2024-07-08 17:56:51 +0100
Branch: REL_12_STABLE [8badee787] 2024-07-08 17:58:42 +0100
-->
     <para>
      Fix over-aggressive clamping of the scale argument
      in <function>round(numeric)</function>
      and <function>trunc(numeric)</function> (Dean Rasheed)
      <ulink url="&commit_baseurl;ece296926">&sect;</ulink>
     </para>

     <para>
      These functions clamped their scale argument to +/-2000, but there
      are valid use-cases for it to be larger; the functions returned
      incorrect results in such cases.  Instead clamp to the actual
      allowed range of type <type>numeric</type>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Nathan Bossart <nathan@postgresql.org>
Branch: master Release: REL_17_BR [3cb2f13ac] 2024-05-13 15:53:50 -0500
Branch: REL_16_STABLE [c1664c8ee] 2024-05-13 15:54:04 -0500
Branch: REL_15_STABLE [857d280c6] 2024-05-13 15:54:10 -0500
Branch: REL_14_STABLE [c8714230a] 2024-05-13 15:54:14 -0500
Branch: REL_13_STABLE [09ec5d455] 2024-05-13 15:54:18 -0500
Branch: REL_12_STABLE [2812059d3] 2024-05-13 15:54:23 -0500
-->
     <para>
      Prevent <function>pg_sequence_last_value()</function> from failing
      on unlogged sequences on standby servers and on temporary sequences
      of other sessions (Nathan Bossart)
      <ulink url="&commit_baseurl;09ec5d455">&sect;</ulink>
     </para>

     <para>
      Make it return NULL in these cases instead of throwing an error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_17_BR [56a829621] 2024-06-13 20:35:02 -0400
Branch: REL_16_STABLE [086ecd12b] 2024-06-13 20:35:02 -0400
Branch: REL_15_STABLE [df95c1ec0] 2024-06-13 20:35:03 -0400
Branch: REL_14_STABLE [5912bf77c] 2024-06-13 20:34:43 -0400
Branch: REL_13_STABLE [c7de5a654] 2024-06-13 20:34:43 -0400
Branch: REL_12_STABLE [5e63a6f43] 2024-06-13 20:34:43 -0400
-->
     <para>
      Fix parsing of ignored operators
      in <function>websearch_to_tsquery()</function> (Tom Lane)
      <ulink url="&commit_baseurl;c7de5a654">&sect;</ulink>
     </para>

     <para>
      Per the manual, punctuation in the input
      of <function>websearch_to_tsquery()</function> is ignored except for
      the special cases of dashes and quotes.  However, parentheses and a
      few other characters appearing immediately before
      an <literal>or</literal> could cause <literal>or</literal> to be
      treated as a data word, rather than as an <literal>OR</literal>
      operator as expected.
     </para>
    </listitem>

    <listitem>
<!--
Author: Nathan Bossart <nathan@postgresql.org>
Branch: master [991f8cf8a] 2024-07-23 21:59:02 -0500
Branch: REL_17_STABLE [657e54a05] 2024-07-23 21:59:02 -0500
Branch: REL_16_STABLE [a57d16865] 2024-07-23 21:59:02 -0500
Branch: REL_15_STABLE [547dd2cbd] 2024-07-23 21:59:02 -0500
Branch: REL_14_STABLE [670fb9f18] 2024-07-23 21:59:02 -0500
Branch: REL_13_STABLE [6c1b71bc6] 2024-07-23 21:59:02 -0500
Branch: REL_12_STABLE [878e8c6be] 2024-07-23 21:59:02 -0500
-->
     <para>
      Detect another integer overflow case while computing new array
      dimensions (Joseph Koshakow)
      <ulink url="&commit_baseurl;6c1b71bc6">&sect;</ulink>
     </para>

     <para>
      Reject applying array
      dimensions <literal>[-2147483648:2147483647]</literal> to an empty
      array.  This is closely related to CVE-2023-5869, but appears
      harmless since the array still ends up empty.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master Release: REL_17_BR [f9f47f0d9] 2024-06-27 19:21:06 -0700
Branch: REL_16_STABLE [e4afd7153] 2024-06-27 19:21:10 -0700
Branch: REL_15_STABLE [b08a4b616] 2024-06-27 19:21:11 -0700
Branch: REL_14_STABLE [af73e37fa] 2024-06-27 19:21:12 -0700
Branch: REL_13_STABLE [7a21306ae] 2024-06-27 19:21:13 -0700
Branch: REL_12_STABLE [11f3815d6] 2024-06-27 19:21:13 -0700
-->
     <para>
      Detect another case of a new catalog cache entry becoming stale
      while detoasting its fields (Noah Misch)
      <ulink url="&commit_baseurl;7a21306ae">&sect;</ulink>
     </para>

     <para>
      An in-place update occurring while we expand out-of-line fields in a
      catalog tuple could be missed, leading to a catalog cache entry that
      lacks the in-place change but is not known to be stale.  This is
      only possible in the <structname>pg_database</structname> catalog,
      so the effects are narrow, but misbehavior is possible.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [220003b9b] 2024-07-20 13:40:15 -0400
Branch: REL_17_STABLE [041a00c48] 2024-07-20 13:40:15 -0400
Branch: REL_16_STABLE [fd958bbbd] 2024-07-20 13:40:15 -0400
Branch: REL_15_STABLE [96953052a] 2024-07-20 13:40:15 -0400
Branch: REL_14_STABLE [0d712ec12] 2024-07-20 13:40:15 -0400
Branch: REL_13_STABLE [461f47948] 2024-07-20 13:40:15 -0400
Branch: REL_12_STABLE [feca6c688] 2024-07-20 13:40:15 -0400
-->
     <para>
      Correctly check updatability of view columns targeted
      by <literal>INSERT</literal> ... <literal>DEFAULT</literal>
      (Tom Lane)
      <ulink url="&commit_baseurl;461f47948">&sect;</ulink>
     </para>

     <para>
      If such a column is non-updatable, we should give an error reporting
      that.  But the check was missed and then later code would report an
      unhelpful error such as <quote>attribute
      number <replaceable>N</replaceable> not found in view
      targetlist</quote>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [f96c2c727] 2024-07-14 13:49:46 -0400
Branch: REL_17_STABLE [cf588e10f] 2024-07-14 13:49:46 -0400
Branch: REL_16_STABLE [8fc487614] 2024-07-14 13:49:46 -0400
Branch: REL_15_STABLE [e7f9f44e3] 2024-07-14 13:49:46 -0400
Branch: REL_14_STABLE [02b4f5e1f] 2024-07-14 13:49:46 -0400
Branch: REL_13_STABLE [b020a866a] 2024-07-14 13:49:46 -0400
Branch: REL_12_STABLE [236b225ed] 2024-07-14 13:49:46 -0400
-->
     <para>
      Avoid reporting an unhelpful internal error for incorrect recursive
      queries (Tom Lane)
      <ulink url="&commit_baseurl;b020a866a">&sect;</ulink>
     </para>

     <para>
      Rearrange the order of error checks so that we throw an on-point
      error when a <command>WITH RECURSIVE</command> query does not have a
      self-reference within the second arm of
      the <literal>UNION</literal>, but does have one self-reference in
      some other place such as <literal>ORDER BY</literal>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_17_BR [e6d0d16ad] 2024-06-20 14:21:36 -0400
Branch: REL_16_STABLE [4f1966676] 2024-06-20 14:21:36 -0400
Branch: REL_15_STABLE [1424c7abc] 2024-06-20 14:21:36 -0400
Branch: REL_14_STABLE [88f3baa06] 2024-06-20 14:21:36 -0400
Branch: REL_13_STABLE [9ce8ee9d3] 2024-06-20 14:21:36 -0400
Branch: REL_12_STABLE [b0037bbef] 2024-06-20 14:21:36 -0400
-->
     <para>
      Don't throw an error if a queued <literal>AFTER</literal> trigger no
      longer exists (Tom Lane)
      <ulink url="&commit_baseurl;9ce8ee9d3">&sect;</ulink>
     </para>

     <para>
      It's possible for a transaction to execute an operation that queues
      a deferred <literal>AFTER</literal> trigger for later execution, and
      then to drop the trigger before that happens.  Formerly this led to
      weird errors such as <quote>could not find
      trigger <replaceable>NNNN</replaceable></quote>.  It seems better to
      silently do nothing if the trigger no longer exists at the time when
      it would have been executed.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_17_BR [76618097a] 2024-06-14 16:20:35 -0400
Branch: REL_16_STABLE [9cf4beb9e] 2024-06-14 16:20:35 -0400
Branch: REL_15_STABLE [1f1eedd3f] 2024-06-14 16:20:35 -0400
Branch: REL_14_STABLE [f3f6a14ce] 2024-06-14 16:20:35 -0400
Branch: REL_13_STABLE [198de7961] 2024-06-14 16:20:35 -0400
Branch: REL_12_STABLE [0a39343ae] 2024-06-14 16:20:35 -0400
-->
     <para>
      Fix failure to remove <structname>pg_init_privs</structname> entries
      for column-level privileges when their table is dropped (Tom Lane)
      <ulink url="&commit_baseurl;198de7961">&sect;</ulink>
     </para>

     <para>
      If an extension grants some column-level privileges on a table it
      creates, relevant catalog entries would remain behind after the
      extension is dropped.  This was harmless until/unless the table's
      OID was re-used for another relation, when it could interfere with
      what <application>pg_dump</application> dumps for that relation.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_17_BR [915de706d] 2024-06-11 17:57:46 -0400
Branch: REL_16_STABLE [b188e1bf7] 2024-06-11 17:57:46 -0400
Branch: REL_15_STABLE [1d0399b54] 2024-06-11 17:57:46 -0400
Branch: REL_14_STABLE [096f2132c] 2024-06-11 17:57:46 -0400
Branch: REL_13_STABLE [5e8aa32a9] 2024-06-11 17:57:46 -0400
Branch: REL_12_STABLE [9256bf6eb] 2024-06-11 17:57:46 -0400
-->
     <para>
      Fix selection of an arbiter index for <literal>ON CONFLICT</literal>
      when the desired index has expressions or predicates (Tom Lane)
      <ulink url="&commit_baseurl;5e8aa32a9">&sect;</ulink>
     </para>

     <para>
      If a query using <literal>ON CONFLICT</literal> accesses the target
      table through an updatable view, it could fail with <quote>there is
      no unique or exclusion constraint matching the ON CONFLICT
      specification</quote>, even though a matching index does exist.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_17_BR [7ed8ce8a4] 2024-06-07 14:50:09 -0400
Branch: REL_16_STABLE [8397f161e] 2024-06-07 14:50:09 -0400
Branch: REL_15_STABLE [3c71cb497] 2024-06-07 14:50:09 -0400
Branch: REL_14_STABLE [2dad0f433] 2024-06-07 14:50:09 -0400
Branch: REL_13_STABLE [7c4ac652e] 2024-06-07 14:50:09 -0400
Branch: REL_12_STABLE [b8efd756d] 2024-06-07 14:50:09 -0400
-->
     <para>
      Refuse to modify a temporary table of another session
      with <literal>ALTER TABLE</literal> (Tom Lane)
      <ulink url="&commit_baseurl;7c4ac652e">&sect;</ulink>
     </para>

     <para>
      Permissions checks normally would prevent this case from arising,
      but it is possible to reach it by altering a parent table whose
      child is another session's temporary table.  Throw an error if we
      discover that such a child table belongs to another session.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_17_BR [d0d44049d] 2023-07-14 11:41:20 -0400
Branch: master Release: REL_17_BR [779ac2c74] 2024-05-18 14:26:13 -0400
Branch: REL_16_STABLE [ce0d16544] 2024-05-18 14:31:35 -0400
Branch: REL_15_STABLE [4ac385adc] 2024-05-18 14:31:35 -0400
Branch: REL_14_STABLE [5ac340602] 2024-05-18 14:31:35 -0400
Branch: REL_13_STABLE [7f90a5dc3] 2024-05-18 14:31:35 -0400
Branch: REL_12_STABLE [686c995fc] 2024-05-18 14:31:35 -0400
-->
     <para>
      Fix failure to recalculate sub-queries generated
      from <function>MIN()</function> or <function>MAX()</function>
      aggregates (Tom Lane)
      <ulink url="&commit_baseurl;7f90a5dc3">&sect;</ulink>
     </para>

     <para>
      In some cases the aggregate result computed at one row of the outer
      query could be re-used for later rows when it should not be.  This
      has only been seen to happen when the outer query uses
      <literal>DISTINCT</literal> that is implemented with hash
      aggregation, but other cases may exist.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_17_BR [5d6c64d29] 2024-06-27 14:44:02 -0400
Branch: REL_16_STABLE [07d66d3cc] 2024-06-27 14:44:02 -0400
Branch: REL_15_STABLE [5401e70e4] 2024-06-27 14:44:03 -0400
Branch: REL_14_STABLE [13abc1f66] 2024-06-27 14:44:03 -0400
Branch: REL_13_STABLE [86fac88ee] 2024-06-27 14:44:03 -0400
Branch: REL_12_STABLE [dccda847b] 2024-06-27 14:44:04 -0400
-->
     <para>
      Avoid crashing when a JIT-inlined backend function throws an error
      (Tom Lane)
      <ulink url="&commit_baseurl;86fac88ee">&sect;</ulink>
     </para>

     <para>
      The error state can include pointers into the dynamically loaded
      module holding the JIT-compiled code (for error location strings).
      In some code paths the module could get unloaded before the error
      report is processed, leading to SIGSEGV when the location strings
      are accessed.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [066e8ac6e] 2024-07-06 15:16:13 -0400
Branch: master [6082b3d5d] 2024-07-08 14:04:00 -0400
Branch: master [e7192486d] 2024-07-09 15:01:13 -0400
Branch: master [896cd266f] 2024-07-09 16:31:24 -0400
Branch: REL_17_STABLE [a9747be27] 2024-07-10 20:15:52 -0400
Branch: REL_16_STABLE [f85c91a18] 2024-07-10 20:15:52 -0400
Branch: REL_15_STABLE [f68d6aabb] 2024-07-10 20:15:52 -0400
Branch: REL_14_STABLE [475e1807c] 2024-07-10 20:15:52 -0400
Branch: REL_13_STABLE [48132587d] 2024-07-10 20:15:52 -0400
Branch: REL_12_STABLE [a134baea7] 2024-07-10 20:15:52 -0400
-->
     <para>
      Cope with behavioral changes in <application>libxml2</application>
      version 2.13.x (Erik Wienhold, Tom Lane)
      <ulink url="&commit_baseurl;48132587d">&sect;</ulink>
     </para>

     <para>
      Notably, we now suppress <quote>chunk is not well balanced</quote>
      errors from <application>libxml2</application>, unless that is the
      only reported error.  This is to make error reports consistent
      between 2.13.x and earlier <application>libxml2</application>
      versions.  In earlier versions, that message was almost always
      redundant or outright incorrect, so 2.13.x substantially reduced the
      number of cases in which it's reported.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master Release: REL_17_BR [cbfbda784] 2024-06-27 21:09:58 +0300
Branch: REL_16_STABLE [b5b418b68] 2024-06-27 21:10:27 +0300
Branch: REL_15_STABLE [0e2f3d78b] 2024-06-27 21:10:31 +0300
Branch: REL_14_STABLE [9dbf8ab48] 2024-06-27 21:10:34 +0300
Branch: REL_13_STABLE [e9c8747ee] 2024-06-27 21:08:55 +0300
Branch: REL_12_STABLE [5dea6628b] 2024-06-27 21:09:15 +0300
-->
     <para>
      Fix handling of subtransactions of prepared transactions
      when starting a hot standby server (Heikki Linnakangas)
      <ulink url="&commit_baseurl;e9c8747ee">&sect;</ulink>
     </para>

     <para>
      When starting a standby's replay at a shutdown checkpoint WAL
      record, transactions that had been prepared but not yet committed on
      the primary are correctly understood as being still in progress.
      But subtransactions of a prepared transaction (created by savepoints
      or <application>PL/pgSQL</application> exception blocks) were not
      accounted for and would be treated as aborted.  That led to
      inconsistency if the prepared transaction was later committed.
     </para>
    </listitem>

    <listitem>
<!--
Author: Masahiko Sawada <msawada@postgresql.org>
Branch: master [bb19b7008] 2024-07-11 22:48:23 +0900
Branch: REL_17_STABLE [068674f4a] 2024-07-11 22:48:21 +0900
Branch: REL_16_STABLE [2f3304ce1] 2024-07-11 22:48:18 +0900
Branch: REL_15_STABLE [aee8c2b95] 2024-07-11 22:48:16 +0900
Branch: REL_14_STABLE [f7d3caf9d] 2024-07-11 22:48:13 +0900
Branch: REL_13_STABLE [cf2c69ec5] 2024-07-11 22:48:10 +0900
Branch: REL_12_STABLE [1b3707587] 2024-07-11 22:48:08 +0900
-->
     <para>
      Prevent incorrect initialization of logical replication slots
      (Masahiko Sawada)
      <ulink url="&commit_baseurl;cf2c69ec5">&sect;</ulink>
     </para>

     <para>
      In some cases a replication slot's start point within the WAL stream
      could be set to a point within a transaction, leading to assertion
      failures or incorrect decoding results.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL_17_STABLE [31f8d620b] 2024-07-01 12:21:07 -0400
Branch: REL_16_STABLE [54a7b21b3] 2024-07-01 12:21:07 -0400
Branch: REL_15_STABLE [4df767cf9] 2024-07-01 12:21:07 -0400
Branch: REL_14_STABLE [1608902fc] 2024-07-01 12:21:07 -0400
Branch: REL_13_STABLE [5f86cd70d] 2024-07-01 12:21:07 -0400
Branch: REL_12_STABLE [8565fb6fb] 2024-07-01 12:21:07 -0400
-->
     <para>
      Avoid memory leakage after servicing a notify or sinval interrupt
      (Tom Lane)
      <ulink url="&commit_baseurl;5f86cd70d">&sect;</ulink>
     </para>

     <para>
      The processing functions for these events could switch the current
      memory context to TopMemoryContext, resulting in session-lifespan
      leakage of any data allocated before the incorrect setting gets
      replaced.  There were observable leaks associated with (at least)
      encoding conversion of incoming queries and parameters attached to
      Bind messages.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [a8458f508] 2024-07-13 14:59:46 +1200
Branch: REL_17_STABLE [3c1c82d40] 2024-07-13 15:02:33 +1200
Branch: REL_16_STABLE [a622095bc] 2024-07-13 15:27:35 +1200
Branch: REL_15_STABLE [5546a834c] 2024-07-13 15:28:38 +1200
Branch: REL_14_STABLE [894b497ac] 2024-07-13 15:43:43 +1200
Branch: REL_13_STABLE [3554d841d] 2024-07-13 15:44:11 +1200
Branch: REL_12_STABLE [ba9fcac72] 2024-07-13 15:45:28 +1200
-->
     <para>
      Avoid possibly missing end-of-input events on Windows sockets
      (Thomas Munro)
      <ulink url="&commit_baseurl;3554d841d">&sect;</ulink>
     </para>

     <para>
      Windows reports an FD_CLOSE event only once after the remote end of
      the connection disconnects.  With unlucky timing, we could miss that
      report and wait indefinitely, or at least until a timeout elapsed,
      expecting more input.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master Release: REL_17_BR [855517307] 2024-05-09 12:45:37 +0900
Branch: REL_16_STABLE [5396a2987] 2024-05-09 12:45:43 +0900
Branch: REL_15_STABLE [8c3f30e67] 2024-05-09 12:45:45 +0900
Branch: REL_14_STABLE [41adf9d96] 2024-05-09 12:45:48 +0900
Branch: REL_13_STABLE [377c25d32] 2024-05-09 12:45:51 +0900
-->
     <para>
      Fix buffer overread in JSON parse error reports for incomplete byte
      sequences (Jacob Champion)
      <ulink url="&commit_baseurl;377c25d32">&sect;</ulink>
     </para>

     <para>
      It was possible to walk off the end of the input buffer by a few
      bytes when the last bytes comprise an incomplete multi-byte
      character.  While usually harmless, in principle this could cause a
      crash.
     </para>
    </listitem>

    <listitem>
<!--
Author: Daniel Gustafsson <dgustafsson@postgresql.org>
Branch: master [274bbced8] 2024-07-26 11:09:45 +0200
Branch: REL_17_STABLE [3df7f44a8] 2024-07-26 11:09:45 +0200
Branch: REL_16_STABLE [cc606afce] 2024-07-26 11:09:45 +0200
Branch: REL_15_STABLE [118ec331b] 2024-07-26 11:09:45 +0200
Branch: REL_14_STABLE [ecbb1cd9b] 2024-07-26 11:09:45 +0200
Branch: REL_13_STABLE [1f476bc75] 2024-07-26 11:09:45 +0200
Branch: REL_12_STABLE [32121c077] 2024-07-26 11:09:45 +0200
Branch: master [161c73462] 2024-07-26 16:25:28 +0200
Branch: REL_17_STABLE [1272cfb72] 2024-07-26 16:25:56 +0200
Branch: REL_16_STABLE [83b4a6358] 2024-07-26 16:29:47 +0200
Branch: REL_15_STABLE [970cd5c62] 2024-07-26 14:16:40 +0200
Branch: REL_14_STABLE [51c1b4fd1] 2024-07-26 14:16:40 +0200
Branch: REL_13_STABLE [40e8ea949] 2024-07-26 14:16:40 +0200
Branch: REL_12_STABLE [ac77add23] 2024-07-26 14:16:40 +0200
Branch: REL_16_STABLE [441eba34d] 2024-07-26 16:29:52 +0200
Branch: REL_15_STABLE [ce3045e9b] 2024-07-26 19:09:27 +0200
Branch: REL_14_STABLE [ddd66a629] 2024-07-26 19:09:54 +0200
Branch: REL_13_STABLE [634710dfb] 2024-07-26 19:10:12 +0200
Branch: REL_12_STABLE [e6dd0b863] 2024-07-26 19:10:37 +0200
-->
     <para>
      Disable creation of stateful TLS session tickets by OpenSSL
      (Daniel Gustafsson)
      <ulink url="&commit_baseurl;1f476bc75">&sect;</ulink>
      <ulink url="&commit_baseurl;40e8ea949">&sect;</ulink>
      <ulink url="&commit_baseurl;634710dfb">&sect;</ulink>
     </para>

     <para>
      This avoids possible failures with clients that think receipt of
      a session ticket means that TLS session resumption is supported.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_17_BR [6dfac2440] 2024-06-13 13:37:49 -0400
Branch: REL_16_STABLE [82a931d3d] 2024-06-13 13:37:49 -0400
Branch: REL_15_STABLE [bf552b1b2] 2024-06-13 13:37:50 -0400
Branch: REL_14_STABLE [1450db793] 2024-06-13 13:37:50 -0400
Branch: REL_13_STABLE [1fa46dba5] 2024-06-13 13:37:50 -0400
Branch: REL_12_STABLE [ec210914c] 2024-06-13 13:37:51 -0400
-->
     <para>
      When replanning a <application>PL/pgSQL</application> <quote>simple
      expression</quote>, check it's still simple (Tom Lane)
      <ulink url="&commit_baseurl;1fa46dba5">&sect;</ulink>
     </para>

     <para>
      Certain fairly-artificial cases, such as dropping a referenced
      function and recreating it as an aggregate, could lead to surprising
      failures such as <quote>unexpected plan node type</quote>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: REL_15_STABLE [f853e23bf] 2024-06-26 07:01:47 -0400
Branch: REL_14_STABLE [20f22e6a6] 2024-06-26 07:24:35 -0400
Branch: REL_13_STABLE [b7374f15b] 2024-06-26 07:25:00 -0400
Branch: REL_12_STABLE [ab46e132f] 2024-06-26 07:25:10 -0400
Branch: REL_11_STABLE [e1541d518] 2024-06-26 07:25:26 -0400
Branch: REL_10_STABLE [320534f8f] 2024-06-26 07:25:35 -0400
Branch: REL9_6_STABLE [12c8faaa7] 2024-06-26 07:29:31 -0400
Branch: REL9_5_STABLE [0536f8e2c] 2024-06-26 07:30:01 -0400
Branch: REL9_4_STABLE [8851d5c3a] 2024-06-26 07:30:06 -0400
Branch: REL9_3_STABLE [8f3be9661] 2024-06-26 07:30:11 -0400
Branch: REL9_2_STABLE [1c4173116] 2024-06-26 07:32:15 -0400
-->
     <para>
      Fix incompatibility between <application>PL/Perl</application> and
      Perl 5.40 (Andrew Dunstan)
      <ulink url="&commit_baseurl;b7374f15b">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_17_BR [d727c5431] 2024-05-09 13:16:34 -0400
Branch: REL_16_STABLE [52ea653aa] 2024-05-09 13:16:21 -0400
Branch: REL_15_STABLE [6e29963ed] 2024-05-09 13:16:21 -0400
Branch: REL_14_STABLE [d39337021] 2024-05-09 13:16:21 -0400
Branch: REL_13_STABLE [272867792] 2024-05-09 13:16:21 -0400
Branch: REL_12_STABLE [157b1e6b4] 2024-05-09 13:16:21 -0400
-->
     <para>
      Fix recursive <type>RECORD</type>-returning
      <application>PL/Python</application> functions (Tom Lane)
      <ulink url="&commit_baseurl;272867792">&sect;</ulink>
     </para>

     <para>
      If we recurse to a new call of the same function that passes a
      different column definition list (<literal>AS</literal> clause), it
      would fail because the inner call would overwrite the outer call's
      idea of what rowtype to return.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_17_BR [c5bec5426] 2024-05-07 18:15:00 -0400
Branch: REL_16_STABLE [be18a12b6] 2024-05-07 18:15:00 -0400
Branch: REL_15_STABLE [363e8c2f9] 2024-05-07 18:15:00 -0400
Branch: REL_14_STABLE [90d39929a] 2024-05-07 18:15:00 -0400
Branch: REL_13_STABLE [abe60b6a0] 2024-05-07 18:15:00 -0400
Branch: REL_12_STABLE [4488142a4] 2024-05-07 18:15:00 -0400
-->
     <para>
      Don't corrupt <application>PL/Python</application>'s
      <literal>TD</literal> dictionary during a recursive trigger call
      (Tom Lane)
      <ulink url="&commit_baseurl;abe60b6a0">&sect;</ulink>
     </para>

     <para>
      If a <application>PL/Python</application>-language trigger caused
      another one to be invoked, the <literal>TD</literal> dictionary
      created for the inner one would overwrite the outer
      one's <literal>TD</literal> dictionary.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_17_BR [b631d0149] 2024-06-04 18:02:13 -0400
Branch: REL_16_STABLE [c236ecc82] 2024-06-04 18:02:13 -0400
Branch: REL_15_STABLE [89ef2aeda] 2024-06-04 18:02:13 -0400
Branch: REL_14_STABLE [1488dee08] 2024-06-04 18:02:13 -0400
Branch: REL_13_STABLE [dda633a03] 2024-06-04 18:02:13 -0400
Branch: REL_12_STABLE [30487423c] 2024-06-04 18:02:13 -0400
-->
     <para>
      Fix <application>PL/Tcl</application>'s reporting of invalid list
      syntax in the result of a function returning tuple (Erik Wienhold,
      Tom Lane)
      <ulink url="&commit_baseurl;dda633a03">&sect;</ulink>
     </para>

     <para>
      Such a case could result in a crash, or in emission of misleading
      context information that actually refers to the previous Tcl error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [1e666fd7c] 2024-07-28 09:23:24 +0200
Branch: REL_17_STABLE [821fbd63e] 2024-07-28 10:19:57 +0200
Branch: REL_16_STABLE [c53016860] 2024-07-28 09:25:03 +0200
Branch: REL_15_STABLE [6ddc8556c] 2024-07-28 09:25:52 +0200
Branch: REL_14_STABLE [95e805e9c] 2024-07-28 09:26:21 +0200
Branch: REL_13_STABLE [da5d7a771] 2024-07-28 09:26:39 +0200
Branch: REL_12_STABLE [407048999] 2024-07-28 09:26:48 +0200
-->
     <para>
      Avoid non-thread-safe usage of <function>strerror()</function>
      in <application>libpq</application> (Peter Eisentraut)
      <ulink url="&commit_baseurl;da5d7a771">&sect;</ulink>
     </para>

     <para>
      Certain error messages returned by OpenSSL could become garbled in
      multi-threaded applications.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_17_BR [c1aea206e] 2024-05-07 18:22:52 -0400
Branch: REL_16_STABLE [5dce8ce0a] 2024-05-07 18:23:01 -0400
Branch: REL_15_STABLE [6a458d93b] 2024-05-07 18:23:07 -0400
Branch: REL_14_STABLE [52b23b4e1] 2024-05-07 18:23:11 -0400
Branch: REL_13_STABLE [b99dc6694] 2024-05-07 18:23:15 -0400
Branch: REL_12_STABLE [a3c00ab15] 2024-05-07 18:23:20 -0400
-->
     <para>
      Ensure that <literal>pg_restore</literal> <option>-l</option>
      reports dependent TOC entries correctly (Tom Lane)
      <ulink url="&commit_baseurl;b99dc6694">&sect;</ulink>
     </para>

     <para>
      If <option>-l</option> was specified together with selective-restore
      options such as <option>-n</option> or <option>-N</option>,
      dependent TOC entries such as comments would be omitted from the
      listing, even when an actual restore would have selected them.
     </para>
    </listitem>

    <listitem>
<!--
Author: Etsuro Fujita <efujita@postgresql.org>
Branch: master Release: REL_17_BR [8cfbac149] 2024-06-07 17:45:00 +0900
Branch: REL_16_STABLE [8405d5a37] 2024-06-07 17:45:02 +0900
Branch: REL_15_STABLE [b33c141cc] 2024-06-07 17:45:04 +0900
Branch: REL_14_STABLE [269e2c391] 2024-06-07 17:45:06 +0900
Branch: REL_13_STABLE [2b461efc5] 2024-06-07 17:45:08 +0900
-->
     <para>
      In <filename>contrib/postgres_fdw</filename>, do not
      send <literal>FETCH FIRST WITH TIES</literal> clauses to the remote
      server (Japin Li)
      <ulink url="&commit_baseurl;2b461efc5">&sect;</ulink>
     </para>

     <para>
      The remote server might not implement this clause, or might
      interpret it differently than we would locally, so don't risk
      attempting remote execution.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [2a5ef0983] 2024-07-06 10:27:16 +1200
Branch: REL_17_STABLE [9c273679b] 2024-07-06 11:23:40 +1200
Branch: REL_16_STABLE [31423bc44] 2024-07-06 11:18:29 +1200
Branch: REL_15_STABLE [467d77bb1] 2024-07-06 10:53:13 +1200
Branch: REL_14_STABLE [c2342a925] 2024-07-06 10:44:41 +1200
Branch: REL_13_STABLE [440aedc0f] 2024-07-06 10:39:10 +1200
Branch: REL_12_STABLE [274a8195d] 2024-07-06 10:30:03 +1200
-->
     <para>
      Avoid clashing with
      system-provided <filename>&lt;regex.h&gt;</filename> headers
      (Thomas Munro)
      <ulink url="&commit_baseurl;440aedc0f">&sect;</ulink>
     </para>

     <para>
      This fixes a compilation failure on macOS version 15 and up.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_17_BR [92c49d106] 2024-06-17 14:30:59 -0400
Branch: REL_16_STABLE [06f81fed3] 2024-06-17 14:30:59 -0400
Branch: REL_15_STABLE [f55083319] 2024-06-17 14:30:59 -0400
Branch: REL_14_STABLE [e4a55378f] 2024-06-17 14:30:59 -0400
Branch: REL_13_STABLE [507a900ad] 2024-06-17 14:30:59 -0400
Branch: REL_12_STABLE [3e3e2ebea] 2024-06-17 14:30:59 -0400
-->
     <para>
      Fix otherwise-harmless assertion failures in <literal>REINDEX
      CONCURRENTLY</literal> applied to an SP-GiST index (Tom Lane)
      <ulink url="&commit_baseurl;507a900ad">&sect;</ulink>
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-15">
  <title>Release 13.15</title>

  <formalpara>
  <title>Release date:</title>
  <para>2024-05-09</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.14.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.15</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you are upgrading from a version earlier than 13.14,
    see <xref linkend="release-13-14"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [b4a71cf65] 2024-03-14 14:57:16 -0400
Branch: REL_16_STABLE [52898c63e] 2024-03-14 14:57:16 -0400
Branch: REL_15_STABLE [7c61d2342] 2024-03-14 14:57:16 -0400
Branch: REL_14_STABLE [3621ffd9f] 2024-03-14 14:57:16 -0400
Branch: REL_13_STABLE [0200398dd] 2024-03-14 14:57:16 -0400
Branch: REL_12_STABLE [82c87af7a] 2024-03-14 14:57:16 -0400
-->
     <para>
      Fix <command>INSERT</command> from
      multiple <command>VALUES</command> rows into a target column that is
      a domain over an array or composite type (Tom Lane)
      <ulink url="&commit_baseurl;0200398dd">&sect;</ulink>
     </para>

     <para>
      Such cases would either fail with surprising complaints about
      mismatched datatypes, or insert unexpected coercions that could lead
      to odd results.
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [4c2369ac5] 2024-02-20 12:49:37 +1300
Branch: REL_16_STABLE [fb95cc72b] 2024-02-20 12:50:09 +1300
Branch: REL_15_STABLE [1b3495e29] 2024-02-20 12:50:34 +1300
Branch: REL_14_STABLE [f9c8f7ccd] 2024-02-20 12:50:57 +1300
Branch: REL_13_STABLE [3850fcca6] 2024-02-20 12:51:17 +1300
Branch: REL_12_STABLE [3ffcd24c2] 2024-02-20 12:51:38 +1300
-->
     <para>
      Fix incorrect pruning of NULL partition when a table is partitioned
      on a boolean column and the query has a boolean <literal>IS
      NOT</literal> clause (David Rowley)
      <ulink url="&commit_baseurl;3850fcca6">&sect;</ulink>
     </para>

     <para>
      A NULL value satisfies a clause such
      as <literal><replaceable>boolcol</replaceable> IS NOT
      FALSE</literal>, so pruning away a partition containing NULLs
      yielded incorrect answers.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [fad3b5b5a] 2024-03-26 15:28:31 -0400
Branch: REL_16_STABLE [7445f0928] 2024-03-26 15:28:16 -0400
Branch: REL_15_STABLE [b48eda4e5] 2024-03-26 15:28:16 -0400
Branch: REL_14_STABLE [66bbad581] 2024-03-26 15:28:16 -0400
Branch: REL_13_STABLE [97de2a159] 2024-03-26 15:28:16 -0400
Branch: REL_12_STABLE [a8b740868] 2024-03-26 15:28:16 -0400
-->
     <para>
      Make <command>ALTER FOREIGN TABLE SET SCHEMA</command> move any
      owned sequences into the new schema (Tom Lane)
      <ulink url="&commit_baseurl;97de2a159">&sect;</ulink>
     </para>

     <para>
      Moving a regular table to a new schema causes any sequences owned by
      the table to be moved to that schema too (along with indexes and
      constraints).  This was overlooked for foreign tables, however.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [0960ae196] 2024-03-18 14:03:58 +0200
Branch: REL_16_STABLE [1f4eb7342] 2024-03-18 14:04:13 +0200
Branch: REL_15_STABLE [d3d95f583] 2024-03-18 14:04:17 +0200
Branch: REL_14_STABLE [262757b73] 2024-03-18 14:04:19 +0200
Branch: REL_13_STABLE [992189a3e] 2024-03-18 14:04:24 +0200
Branch: REL_12_STABLE [f3e4581ac] 2024-03-18 14:04:28 +0200
-->
     <para>
      Fix <command>EXPLAIN</command>'s counting of heap pages accessed by
      a bitmap heap scan (Melanie Plageman)
      <ulink url="&commit_baseurl;992189a3e">&sect;</ulink>
     </para>

     <para>
      Previously, heap pages that contain no visible tuples were not
      counted; but it seems more consistent to count all pages returned by
      the bitmap index scan.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [6faca9ae2] 2024-04-02 14:59:32 -0400
Branch: REL_16_STABLE [cbfbb14bd] 2024-04-02 14:59:04 -0400
Branch: REL_15_STABLE [4fb56a734] 2024-04-02 14:59:04 -0400
Branch: REL_14_STABLE [ca392df8d] 2024-04-02 14:59:04 -0400
Branch: REL_13_STABLE [4afc2c219] 2024-04-02 14:59:04 -0400
Branch: REL_12_STABLE [f5d9212e5] 2024-04-02 14:59:04 -0400
-->
     <para>
      Avoid deadlock during removal of orphaned temporary tables
      (Mikhail Zhilin)
      <ulink url="&commit_baseurl;4afc2c219">&sect;</ulink>
     </para>

     <para>
      If the session that creates a temporary table crashes without
      removing the table, autovacuum will eventually try to remove the
      orphaned table.  However, an incoming session that's been assigned
      the same temporary namespace will do that too.  If a temporary table
      has a dependency (such as an owned sequence) then a deadlock could
      result between these two cleanup attempts.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [f65ab862e] 2024-04-29 10:24:56 -0700
Branch: REL_16_STABLE [92685c389] 2024-04-29 10:24:59 -0700
Branch: REL_15_STABLE [7c5915c4b] 2024-04-29 10:24:59 -0700
Branch: REL_14_STABLE [2ca19aa81] 2024-04-29 10:25:00 -0700
Branch: REL_13_STABLE [70cadfba0] 2024-04-29 10:25:00 -0700
Branch: REL_12_STABLE [f222349c4] 2024-04-29 10:25:00 -0700
-->
     <para>
      Avoid race condition while examining per-relation frozen-XID values
      (Noah Misch)
      <ulink url="&commit_baseurl;70cadfba0">&sect;</ulink>
     </para>

     <para>
      <command>VACUUM</command>'s computation of per-database frozen-XID
      values from per-relation values could get confused by a concurrent
      update of those values by another <command>VACUUM</command>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL_15_STABLE [bf379b555] 2024-04-30 15:22:55 -0400
Branch: REL_14_STABLE [51189f98a] 2024-04-30 15:22:55 -0400
Branch: REL_13_STABLE [1ee22d1e8] 2024-04-30 15:22:55 -0400
Branch: REL_12_STABLE [56d30fb10] 2024-04-30 15:22:56 -0400
-->
     <para>
      Disallow converting a table to a view within an outer SQL command
      that is using that table (Tom Lane)
      <ulink url="&commit_baseurl;1ee22d1e8">&sect;</ulink>
     </para>

     <para>
      This avoids possible crashes.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [03107b4ed] 2024-04-16 11:22:51 -0400
Branch: REL_16_STABLE [91800af13] 2024-04-16 11:03:43 -0400
Branch: REL_15_STABLE [5aacfa64e] 2024-04-16 11:22:39 -0400
Branch: REL_14_STABLE [ab2402268] 2024-04-16 11:22:39 -0400
Branch: REL_13_STABLE [d9e4ee74f] 2024-04-16 11:22:39 -0400
Branch: REL_12_STABLE [f502849d4] 2024-04-16 11:22:39 -0400
-->
     <para>
      Ensure that join conditions generated from equivalence classes are
      applied at the correct plan level (Tom Lane)
      <ulink url="&commit_baseurl;d9e4ee74f">&sect;</ulink>
     </para>

     <para>
      In versions before <productname>PostgreSQL</productname> 16, it was
      possible for generated conditions to be evaluated below outer joins
      when they should be evaluated above (after) the outer join, leading
      to incorrect query results.  All versions have a similar hazard when
      considering joins to <command>UNION ALL</command> trees that have
      constant outputs for the join column in
      some <command>SELECT </command> arms.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a767cdc84] 2024-03-27 13:39:03 -0400
Branch: REL_16_STABLE [a94f51a7b] 2024-03-27 13:39:03 -0400
Branch: REL_15_STABLE [03561a6c7] 2024-03-27 13:39:03 -0400
Branch: REL_14_STABLE [0d30e48c2] 2024-03-27 13:39:03 -0400
Branch: REL_13_STABLE [de3c5b187] 2024-03-27 13:39:03 -0400
Branch: REL_12_STABLE [25675c474] 2024-03-27 13:39:03 -0400
-->
     <para>
      Avoid unnecessary use of moving-aggregate mode with a non-moving
      window frame (Vallimaharajan G)
      <ulink url="&commit_baseurl;de3c5b187">&sect;</ulink>
     </para>

     <para>
      When a plain aggregate is used as a window function, and the window
      frame start is specified as <literal>UNBOUNDED PRECEDING</literal>,
      the frame's head cannot move so we do not need to use the special
      (and more expensive) moving-aggregate mode.  This optimization was
      intended all along, but due to a coding error it never triggered.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a6b2a51e1] 2024-02-23 15:21:53 -0500
Branch: REL_16_STABLE [ef0333e67] 2024-02-23 15:21:53 -0500
Branch: REL_15_STABLE [37bbe3d3a] 2024-02-23 15:21:53 -0500
Branch: REL_14_STABLE [cbeb45527] 2024-02-23 15:21:53 -0500
Branch: REL_13_STABLE [9061fd23c] 2024-02-23 15:21:53 -0500
Branch: REL_12_STABLE [cf807eba5] 2024-02-23 15:21:53 -0500
-->
     <para>
      Avoid use of already-freed data while planning partition-wise joins
      under GEQO (Tom Lane)
      <ulink url="&commit_baseurl;9061fd23c">&sect;</ulink>
     </para>

     <para>
      This would typically end in a crash or unexpected error message.
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [a37a3e2b3] 2024-03-05 16:17:02 +1300
Branch: REL_16_STABLE [ac7e6a01c] 2024-03-05 16:17:53 +1300
Branch: REL_15_STABLE [164fe7a6e] 2024-03-05 16:18:19 +1300
Branch: REL_14_STABLE [0c2dda109] 2024-03-05 16:18:42 +1300
Branch: REL_13_STABLE [421dfb41a] 2024-03-05 16:19:05 +1300
Branch: REL_12_STABLE [94246405d] 2024-03-05 16:19:26 +1300
-->
     <para>
      Fix incorrectly-reported statistics kind codes in <quote>requested
      statistics kind <replaceable>X</replaceable> is not yet
      built</quote> error messages (David Rowley)
      <ulink url="&commit_baseurl;421dfb41a">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [e0df80828] 2024-04-15 12:56:56 -0400
Branch: REL_16_STABLE [cc1eb6a3c] 2024-04-15 12:56:56 -0400
Branch: REL_15_STABLE [09989ba84] 2024-04-15 12:56:56 -0400
Branch: REL_14_STABLE [78e81e14d] 2024-04-15 12:56:56 -0400
Branch: REL_13_STABLE [b6e21cef7] 2024-04-15 12:56:56 -0400
Branch: REL_12_STABLE [e0970862e] 2024-04-15 12:56:56 -0400
Branch: master [2ed8f9a01] 2024-03-06 14:41:13 -0500
Branch: REL_16_STABLE [1b3029be5] 2024-03-06 14:41:13 -0500
Branch: REL_15_STABLE [3b671dcf5] 2024-03-06 14:41:13 -0500
Branch: REL_14_STABLE [a595c3075] 2024-03-06 14:41:13 -0500
Branch: REL_13_STABLE [d769f9d97] 2024-03-06 14:41:13 -0500
Branch: REL_12_STABLE [466376c9f] 2024-03-06 14:41:13 -0500
-->
     <para>
      Be more careful with <type>RECORD</type>-returning functions
      in <literal>FROM</literal> (Tom Lane)
      <ulink url="&commit_baseurl;b6e21cef7">&sect;</ulink>
      <ulink url="&commit_baseurl;d769f9d97">&sect;</ulink>
     </para>

     <para>
      The output columns of such a function call must be defined by
      an <literal>AS</literal> clause that specifies the column names and
      data types.  If the actual function output value doesn't match that,
      an error is supposed to be thrown at runtime.  However, some code
      paths would examine the actual value prematurely, and potentially
      issue strange errors or suffer assertion failures if it doesn't
      match expectations.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [6ee3261e9] 2024-03-12 18:16:25 -0400
Branch: REL_16_STABLE [40d1bdeb7] 2024-03-12 18:16:10 -0400
Branch: REL_15_STABLE [6f66fadad] 2024-03-12 18:16:10 -0400
Branch: REL_14_STABLE [649bbba11] 2024-03-12 18:16:10 -0400
Branch: REL_13_STABLE [28184f039] 2024-03-12 18:16:10 -0400
Branch: REL_12_STABLE [dc1503d5b] 2024-03-12 18:16:10 -0400
-->
     <para>
      Fix confusion about the return rowtype of SQL-language procedures
      (Tom Lane)
      <ulink url="&commit_baseurl;28184f039">&sect;</ulink>
     </para>

     <para>
      A procedure implemented in SQL language that returns a single
      composite-type column would cause an assertion failure or core dump.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
Branch: master [d57b7cc33] 2024-02-16 16:02:00 +0200
Branch: master [75bcba6cb] 2024-02-21 02:51:41 +0200
Branch: REL_16_STABLE [760767182] 2024-03-11 03:06:55 +0200
Branch: REL_15_STABLE [84788ee5b] 2024-03-11 03:06:45 +0200
Branch: REL_14_STABLE [84cc1a552] 2024-03-11 03:06:15 +0200
Branch: REL_13_STABLE [445c7e38f] 2024-03-11 03:06:10 +0200
Branch: REL_12_STABLE [98bfb7558] 2024-03-11 02:53:07 +0200
-->
     <para>
      Add protective stack depth checks to some recursive functions
      (Egor Chindyaskin)
      <ulink url="&commit_baseurl;445c7e38f">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [4019285c0] 2024-04-28 13:42:13 -0400
Branch: REL_16_STABLE [3752e3d21] 2024-04-28 13:42:13 -0400
Branch: REL_15_STABLE [e6e3ee5b7] 2024-04-28 13:42:13 -0400
Branch: REL_14_STABLE [1748379b6] 2024-04-28 13:42:13 -0400
Branch: REL_13_STABLE [440b6251b] 2024-04-28 13:42:13 -0400
Branch: REL_12_STABLE [cb0ccefa0] 2024-04-28 13:42:13 -0400
-->
     <para>
      Detect integer overflow when adding or subtracting
      an <type>interval</type> to/from a <type>timestamp</type>
      (Joseph Koshakow)
      <ulink url="&commit_baseurl;440b6251b">&sect;</ulink>
     </para>

     <para>
      Some cases that should cause an out-of-range error produced an
      incorrect result instead.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ce571434a] 2024-02-09 12:29:41 -0500
Branch: REL_16_STABLE [4eb261165] 2024-02-09 12:29:41 -0500
Branch: REL_15_STABLE [26c89d105] 2024-02-09 12:29:41 -0500
Branch: REL_14_STABLE [d21690edb] 2024-02-09 12:29:41 -0500
Branch: REL_13_STABLE [ceb224b62] 2024-02-09 12:29:41 -0500
Branch: REL_12_STABLE [f38903d1e] 2024-02-09 12:29:41 -0500
-->
     <para>
      Avoid race condition in <function>pg_get_expr()</function>
      (Tom Lane)
      <ulink url="&commit_baseurl;ceb224b62">&sect;</ulink>
     </para>

     <para>
      If the relation referenced by the argument is dropped concurrently,
      the function's intention is to return NULL, but sometimes it failed
      instead.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
Branch: master [165d921c9] 2024-02-08 12:45:26 +0200
Branch: REL_16_STABLE [e3e05adde] 2024-02-09 12:37:21 +0200
Branch: REL_15_STABLE [503299b7f] 2024-02-09 12:38:32 +0200
Branch: REL_14_STABLE [18388291a] 2024-02-09 12:39:42 +0200
Branch: REL_13_STABLE [4efaf4b09] 2024-02-09 12:39:54 +0200
Branch: REL_12_STABLE [d44060cfc] 2024-02-09 12:55:43 +0200
-->
     <para>
      Fix detection of old transaction IDs in XID status functions
      (Karina Litskevich)
      <ulink url="&commit_baseurl;4efaf4b09">&sect;</ulink>
     </para>

     <para>
      Transaction IDs more than 2<superscript>31</superscript>
      transactions in the past could be misidentified as recent,
      leading to misbehavior of <function>pg_xact_status()</function>
      or <function>txid_status()</function>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Etsuro Fujita <efujita@postgresql.org>
Branch: REL_16_STABLE [e79ceafe9] 2024-04-11 19:05:00 +0900
Branch: REL_15_STABLE [b82dca2a5] 2024-04-11 19:05:02 +0900
Branch: REL_14_STABLE [b714bc40c] 2024-04-11 19:05:04 +0900
Branch: REL_13_STABLE [01b01a77f] 2024-04-11 19:05:05 +0900
Branch: REL_12_STABLE [0341d4b10] 2024-04-11 19:05:07 +0900
-->
     <para>
      Fix file descriptor leakage when an error is thrown while waiting
      in <function>WaitEventSetWait</function> (Etsuro Fujita)
      <ulink url="&commit_baseurl;01b01a77f">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [f5a465f1a] 2024-02-25 16:15:07 -0500
Branch: REL_16_STABLE [8c785d354] 2024-02-25 16:15:07 -0500
Branch: REL_15_STABLE [940489b46] 2024-02-25 16:15:07 -0500
Branch: REL_14_STABLE [09f09884c] 2024-02-25 16:15:07 -0500
Branch: REL_13_STABLE [43cca9de9] 2024-02-25 16:15:07 -0500
Branch: REL_12_STABLE [c0b4dad38] 2024-02-25 16:15:07 -0500
-->
     <para>
      Throw an error if an index is accessed while it is being reindexed
      (Tom Lane)
      <ulink url="&commit_baseurl;43cca9de9">&sect;</ulink>
     </para>

     <para>
      Previously this was just an assertion check, but promote it into a
      regular runtime error.  This will provide a more on-point error
      message when reindexing a user-defined index expression that
      attempts to access its own table.
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [a63224be4] 2024-05-01 13:21:21 +1200
Branch: REL_16_STABLE [68d358545] 2024-05-01 13:21:50 +1200
Branch: REL_15_STABLE [52f21f928] 2024-05-01 13:22:16 +1200
Branch: REL_14_STABLE [e6b0efc65] 2024-05-01 13:22:41 +1200
Branch: REL_13_STABLE [0a34bcd0c] 2024-05-01 13:23:05 +1200
Branch: REL_12_STABLE [e3f9dcabd] 2024-05-01 13:23:25 +1200
-->
     <para>
      Ensure that index-only scans on <type>name</type> columns return a
      fully-padded value (David Rowley)
      <ulink url="&commit_baseurl;0a34bcd0c">&sect;</ulink>
     </para>

     <para>
      The value physically stored in the index is truncated, and
      previously a pointer to that value was returned to callers.  This
      provoked complaints when testing under valgrind.  In theory it could
      result in crashes, though none have been reported.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [fbf9a7ac4] 2024-02-13 21:23:41 +0200
Branch: REL_16_STABLE [f2f09b825] 2024-02-13 21:24:45 +0200
Branch: REL_15_STABLE [d46c26961] 2024-02-13 21:25:27 +0200
Branch: REL_14_STABLE [9b8550fbd] 2024-02-13 21:25:39 +0200
Branch: REL_13_STABLE [e92375692] 2024-02-13 21:25:48 +0200
Branch: REL_12_STABLE [95cc48ca0] 2024-02-13 21:25:59 +0200
-->
     <para>
      Fix crash with DSM allocations larger than 4GB (Heikki Linnakangas)
      <ulink url="&commit_baseurl;e92375692">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [f8c5317d0] 2024-03-12 10:18:32 +0200
Branch: REL_16_STABLE [539e328b1] 2024-03-12 10:18:44 +0200
Branch: REL_15_STABLE [4fce5f970] 2024-03-12 10:18:50 +0200
Branch: REL_14_STABLE [bf1f593e8] 2024-03-12 10:18:51 +0200
Branch: REL_13_STABLE [ad5cd55e6] 2024-03-12 10:18:53 +0200
Branch: REL_12_STABLE [df27d76d3] 2024-03-12 10:18:54 +0200
-->
     <para>
      Disconnect if a new server session's client socket cannot be put
      into non-blocking mode (Heikki Linnakangas)
      <ulink url="&commit_baseurl;ad5cd55e6">&sect;</ulink>
     </para>

     <para>
      It was once theoretically possible for us to operate with a socket
      that's in blocking mode; but that hasn't worked fully in a long
      time, so fail at connection start rather than misbehave later.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [453c46873] 2024-03-07 19:38:17 -0500
Branch: REL_16_STABLE [6a2c80e95] 2024-03-07 19:37:51 -0500
Branch: REL_15_STABLE [0fe82e45c] 2024-03-07 19:37:51 -0500
Branch: REL_14_STABLE [473babd42] 2024-03-07 19:37:51 -0500
Branch: REL_13_STABLE [9fbe07275] 2024-03-07 19:37:51 -0500
Branch: REL_12_STABLE [c42e5fdcf] 2024-03-07 19:37:51 -0500
-->
     <para>
      Fix inadequate error reporting
      with <application>OpenSSL</application> 3.0.0 and later (Heikki
      Linnakangas, Tom Lane)
      <ulink url="&commit_baseurl;9fbe07275">&sect;</ulink>
     </para>

     <para>
      System-reported errors passed through by OpenSSL were reported with
      a numeric error code rather than anything readable.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a584d03ce] 2024-02-09 11:21:08 -0500
Branch: REL_16_STABLE [52afe5632] 2024-02-09 11:21:08 -0500
Branch: REL_15_STABLE [806f98951] 2024-02-09 11:21:08 -0500
Branch: REL_14_STABLE [8ead39e38] 2024-02-09 11:21:08 -0500
Branch: REL_13_STABLE [8c5da20db] 2024-02-09 11:21:08 -0500
Branch: REL_12_STABLE [9fb1396a9] 2024-02-09 11:21:08 -0500
Branch: master [0028b55bc] 2024-02-09 11:11:39 -0500
Branch: REL_16_STABLE [9440d23a0] 2024-02-09 11:11:39 -0500
Branch: REL_15_STABLE [9f041b041] 2024-02-09 11:11:39 -0500
Branch: REL_14_STABLE [7d7cc7fd6] 2024-02-09 11:11:39 -0500
Branch: REL_13_STABLE [67f8cf0f0] 2024-02-09 11:11:39 -0500
Branch: REL_12_STABLE [95e960e81] 2024-02-09 11:11:39 -0500
-->
     <para>
      Avoid concurrent calls to <function>bindtextdomain()</function>
      in <application>libpq</application>
      and <application>ecpglib</application> (Tom Lane)
      <ulink url="&commit_baseurl;8c5da20db">&sect;</ulink>
      <ulink url="&commit_baseurl;67f8cf0f0">&sect;</ulink>
     </para>

     <para>
      Although GNU <application>gettext</application>'s implementation
      seems to be fine with concurrent calls, the version available on
      Windows is not.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [6f0cef935] 2024-04-16 12:31:42 -0400
Branch: REL_16_STABLE [392e6e9e6] 2024-04-16 12:31:32 -0400
Branch: REL_15_STABLE [25f937217] 2024-04-16 12:31:32 -0400
Branch: REL_14_STABLE [463164639] 2024-04-16 12:31:32 -0400
Branch: REL_13_STABLE [02531e8ca] 2024-04-16 12:31:32 -0400
Branch: REL_12_STABLE [2b6a74afe] 2024-04-16 12:31:32 -0400
Branch: REL_16_STABLE [0018f0af5] 2024-04-18 20:47:37 -0400
Branch: REL_15_STABLE [1e7b1b026] 2024-04-18 20:47:37 -0400
Branch: REL_14_STABLE [df66319f7] 2024-04-18 20:47:37 -0400
Branch: REL_13_STABLE [481597fc6] 2024-04-18 20:47:37 -0400
Branch: REL_12_STABLE [61dd815e0] 2024-04-18 20:47:37 -0400
Branch: REL_16_STABLE [dd3fddc85] 2024-04-19 01:07:16 -0400
Branch: REL_15_STABLE [f7e891748] 2024-04-19 01:07:32 -0400
Branch: REL_14_STABLE [de84608e2] 2024-04-19 01:07:41 -0400
Branch: REL_13_STABLE [c6bfeab42] 2024-04-19 01:07:47 -0400
Branch: REL_12_STABLE [cd26f08e4] 2024-04-19 01:07:52 -0400
-->
     <para>
      Fix crash in <application>ecpg</application>'s preprocessor if
      the program tries to redefine a macro that was defined on the
      preprocessor command line (Tom Lane)
      <ulink url="&commit_baseurl;02531e8ca">&sect;</ulink>
      <ulink url="&commit_baseurl;481597fc6">&sect;</ulink>
      <ulink url="&commit_baseurl;c6bfeab42">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [096a761d6] 2024-04-04 15:31:53 -0400
Branch: REL_16_STABLE [118558e6d] 2024-04-04 15:31:53 -0400
Branch: REL_15_STABLE [f159f1814] 2024-04-04 15:31:53 -0400
Branch: REL_14_STABLE [d3167ed3f] 2024-04-04 15:31:53 -0400
Branch: REL_13_STABLE [5ba29e945] 2024-04-04 15:31:53 -0400
Branch: REL_12_STABLE [360d007e3] 2024-04-04 15:31:53 -0400
-->
     <para>
      In <application>ecpg</application>, avoid issuing
      false <quote>unsupported feature will be passed to server</quote>
      warnings (Tom Lane)
      <ulink url="&commit_baseurl;5ba29e945">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [e77a1c58e] 2024-02-19 11:38:18 +0900
Branch: REL_16_STABLE [88e03d055] 2024-02-19 11:38:44 +0900
Branch: REL_15_STABLE [b5cb6022b] 2024-02-19 11:38:47 +0900
Branch: REL_14_STABLE [a05bb9add] 2024-02-19 11:38:49 +0900
Branch: REL_13_STABLE [c031ce97b] 2024-02-19 11:38:52 +0900
Branch: REL_12_STABLE [771240f97] 2024-02-19 11:38:54 +0900
-->
     <para>
      Ensure that the string result
      of <application>ecpg</application>'s <function>intoasc()</function>
      function is correctly zero-terminated (Oleg Tselebrovskiy)
      <ulink url="&commit_baseurl;c031ce97b">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Daniel Gustafsson <dgustafsson@postgresql.org>
Branch: master [7e65ad197] 2024-03-21 23:31:57 +0100
Branch: REL_16_STABLE [5863bacb8] 2024-03-21 23:31:57 +0100
Branch: REL_15_STABLE [12128be62] 2024-03-21 23:31:57 +0100
Branch: REL_14_STABLE [be01c8c34] 2024-03-21 23:31:57 +0100
Branch: REL_13_STABLE [affc46b76] 2024-03-21 23:31:57 +0100
Branch: REL_12_STABLE [d82cb467b] 2024-03-21 23:31:57 +0100
Branch: REL_14_STABLE [6ebd43725] 2024-03-22 01:01:30 +0100
Branch: REL_13_STABLE [d5c6affb8] 2024-03-22 01:01:30 +0100
Branch: REL_12_STABLE [82c2192d9] 2024-03-22 01:01:30 +0100
-->
     <para>
      Fix <application>pg_dumpall</application> so that role comments, if
      present, will be dumped regardless of the setting
      of <option>--no-role-passwords</option> (Daniel Gustafsson,
      &Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;affc46b76">&sect;</ulink>
      <ulink url="&commit_baseurl;d5c6affb8">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [5392dd3d2] 2024-04-10 15:45:58 -0400
Branch: REL_16_STABLE [48f216dc6] 2024-04-10 15:45:58 -0400
Branch: REL_15_STABLE [d85db0a8e] 2024-04-10 15:45:59 -0400
Branch: REL_14_STABLE [dc5824a06] 2024-04-10 15:45:59 -0400
Branch: REL_13_STABLE [f5cee411a] 2024-04-10 15:45:59 -0400
Branch: REL_12_STABLE [5e9d8bed0] 2024-04-10 15:45:59 -0400
-->
     <para>
      Fix <application>PL/pgSQL</application>'s parsing of single-line
      comments (<literal>--</literal>-style comments) following
      expressions (Erik Wienhold, Tom Lane)
      <ulink url="&commit_baseurl;f5cee411a">&sect;</ulink>
     </para>

     <para>
      This mistake caused parse errors if such a comment followed
      a <literal>WHEN</literal> expression in
      a <application>PL/pgSQL</application> <command>CASE</command>
      statement.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
Branch: master [b1fe8efdf] 2024-03-24 00:09:24 +0200
Branch: REL_16_STABLE [3676b846b] 2024-03-23 23:02:30 +0200
Branch: REL_15_STABLE [0d466bce9] 2024-03-23 23:02:43 +0200
Branch: REL_14_STABLE [4e8529da4] 2024-03-23 23:03:10 +0200
Branch: REL_13_STABLE [5cc1f2626] 2024-03-23 23:03:12 +0200
Branch: REL_12_STABLE [d603e6744] 2024-03-24 00:08:13 +0200
Branch: master [ab65dfb0f] 2024-03-24 00:09:24 +0200
Branch: REL_16_STABLE [a6ddb8ad0] 2024-03-23 23:02:30 +0200
Branch: REL_15_STABLE [54e6184db] 2024-03-23 23:02:43 +0200
Branch: REL_14_STABLE [5df5d9cd7] 2024-03-23 23:03:10 +0200
Branch: REL_13_STABLE [e2c241416] 2024-03-23 23:03:12 +0200
Branch: REL_12_STABLE [50f8611d0] 2024-03-23 23:03:14 +0200
-->
     <para>
      In <filename>contrib/amcheck</filename>, don't report false match
      failures due to short- versus long-header values (Andrey Borodin,
      Michael Zhilin)
      <ulink url="&commit_baseurl;5cc1f2626">&sect;</ulink>
      <ulink url="&commit_baseurl;e2c241416">&sect;</ulink>
     </para>

     <para>
      A variable-length datum in a heap tuple or index tuple could have
      either a short or a long header, depending on compression parameters
      that applied when it was made.  Treat these cases as equivalent
      rather than complaining if there's a difference.
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [c399248b3] 2024-03-11 12:27:11 +1300
Branch: REL_16_STABLE [6a9e2cb2b] 2024-03-11 12:27:46 +1300
Branch: REL_15_STABLE [ab64b275a] 2024-03-11 12:28:11 +1300
Branch: REL_14_STABLE [628c3f2e1] 2024-03-11 12:28:40 +1300
Branch: REL_13_STABLE [20b85b3da] 2024-03-11 12:29:03 +1300
Branch: REL_12_STABLE [9301e0f41] 2024-03-11 12:29:24 +1300
-->
     <para>
      In <filename>contrib/postgres_fdw</filename>, avoid emitting
      requests to sort by a constant (David Rowley)
      <ulink url="&commit_baseurl;20b85b3da">&sect;</ulink>
     </para>

     <para>
      This could occur in cases involving <literal>UNION ALL</literal>
      with constant-emitting subqueries.  Sorting by a constant is useless
      of course, but it also risks being misinterpreted by the remote
      server, leading to <quote>ORDER BY
      position <replaceable>N</replaceable> is not in select list</quote>
      errors.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a3021aafc] 2024-04-21 13:46:20 -0400
Branch: REL_16_STABLE [75929b6cf] 2024-04-21 13:46:20 -0400
Branch: REL_15_STABLE [6c85e3359] 2024-04-21 13:46:20 -0400
Branch: REL_14_STABLE [3ed6e1698] 2024-04-21 13:46:20 -0400
Branch: REL_13_STABLE [0e56b2b94] 2024-04-21 13:46:20 -0400
Branch: REL_12_STABLE [ce1c30ece] 2024-04-21 13:46:20 -0400
-->
     <para>
      Make <filename>contrib/postgres_fdw</filename> set the remote
      session's time zone to <literal>GMT</literal>
      not <literal>UTC</literal> (Tom Lane)
      <ulink url="&commit_baseurl;0e56b2b94">&sect;</ulink>
     </para>

     <para>
      This should have the same results for practical purposes.
      However, <literal>GMT</literal> is recognized by hard-wired code in
      the server, while <literal>UTC</literal> is looked up in the
      timezone database.  So the old code could fail in the unlikely event
      that the remote server's timezone database is missing entries.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: REL_16_STABLE [7c93f31de] 2024-04-16 12:25:48 +0900
Branch: REL_15_STABLE [689ba4f1c] 2024-04-16 12:26:10 +0900
Branch: REL_14_STABLE [6fa5e67e8] 2024-04-16 12:26:15 +0900
Branch: REL_13_STABLE [bb418aeee] 2024-04-16 12:26:17 +0900
Branch: REL_12_STABLE [4b0e5d601] 2024-04-16 12:26:21 +0900
-->
     <para>
      In <filename>contrib/xml2</filename>, avoid use of library functions
      that have been deprecated in recent versions
      of <application>libxml2</application> (Dmitry Koval)
      <ulink url="&commit_baseurl;bb418aeee">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [53c8d6c9f] 2024-04-10 12:13:46 +1200
Branch: REL_16_STABLE [bf1cfe77e] 2024-04-10 10:46:15 +1200
Branch: REL_15_STABLE [74992929a] 2024-04-10 12:14:04 +1200
Branch: REL_14_STABLE [7fe32eaa4] 2024-04-10 12:15:07 +1200
Branch: REL_13_STABLE [4f90750b5] 2024-04-10 12:15:41 +1200
Branch: REL_12_STABLE [01b55203a] 2024-04-10 12:15:59 +1200
-->
     <para>
      Fix incompatibility with LLVM 18 (Thomas Munro, Dmitry Dolgov)
      <ulink url="&commit_baseurl;4f90750b5">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [8a92b70c1] 2024-03-26 11:44:49 -0400
Branch: REL_16_STABLE [7651fd387] 2024-03-26 11:44:49 -0400
Branch: REL_15_STABLE [3c3f4fd74] 2024-03-26 11:44:49 -0400
Branch: REL_14_STABLE [d82605bcd] 2024-03-26 11:44:49 -0400
Branch: REL_13_STABLE [243e99532] 2024-03-26 11:44:49 -0400
Branch: REL_12_STABLE [7124e7d52] 2024-03-26 11:44:49 -0400
-->
     <para>
      Allow <literal>make check</literal> to work with
      the <application>musl</application> C library (Thomas Munro, Bruce
      Momjian, Tom Lane)
      <ulink url="&commit_baseurl;243e99532">&sect;</ulink>
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-14">
  <title>Release 13.14</title>

  <formalpara>
  <title>Release date:</title>
  <para>2024-02-08</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.13.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.14</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, one bug was fixed that could have resulted in corruption of
    GIN indexes during concurrent updates.  If you suspect such
    corruption, reindex affected indexes after installing this update.
   </para>

   <para>
    Also, if you are upgrading from a version earlier than 13.13,
    see <xref linkend="release-13-13"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [5a9167c39] 2024-02-05 11:01:23 +0200
Branch: REL_16_STABLE [d6a61cb3b] 2024-02-05 11:02:56 +0200
Branch: REL_15_STABLE [f2fdea198] 2024-02-05 11:03:26 +0200
Branch: REL_14_STABLE [f4f288352] 2024-02-05 11:03:43 +0200
Branch: REL_13_STABLE [d541ce3b6] 2024-02-05 11:04:08 +0200
Branch: REL_12_STABLE [2699fc035] 2024-02-05 11:04:22 +0200
Branch: master [b96115acb] 2024-02-05 11:01:30 +0200
Branch: REL_16_STABLE [fb3836855] 2024-02-05 11:03:03 +0200
Branch: REL_15_STABLE [06f36bc01] 2024-02-05 11:03:28 +0200
Branch: REL_14_STABLE [a45c950ae] 2024-02-05 11:03:43 +0200
Branch: REL_13_STABLE [b73d21648] 2024-02-05 11:04:10 +0200
Branch: REL_12_STABLE [add8bc9b8] 2024-02-05 11:04:23 +0200
-->
     <para>
      Tighten security restrictions within <command>REFRESH MATERIALIZED
      VIEW CONCURRENTLY</command> (Heikki Linnakangas)
      <ulink url="&commit_baseurl;d541ce3b6">&sect;</ulink>
      <ulink url="&commit_baseurl;b73d21648">&sect;</ulink>
     </para>

     <para>
      One step of a concurrent refresh command was run under weak security
      restrictions.  If a materialized view's owner could persuade a
      superuser or other high-privileged user to perform a concurrent
      refresh on that view, the view's owner could control code executed
      with the privileges of the user running <command>REFRESH</command>.
      Fix things so that all user-determined code is run as the view's
      owner, as expected.
     </para>

     <para>
      The only known exploit for this error does not work
      in <productname>PostgreSQL</productname> 16.0 and later, so it may
      be that v16 is not vulnerable in practice.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks Pedro
      Gallegos for reporting this problem.
      (CVE-2024-0985) <!-- not CVE-2023-5869 as claimed in commit msg -->
     </para>
    </listitem>

    <listitem>
<!--
Author: Daniel Gustafsson <dgustafsson@postgresql.org>
Branch: master [9dce22033] 2023-09-27 13:02:21 +0200
Branch: REL_16_STABLE [2cf50585e] 2023-11-17 10:18:38 +0100
Branch: REL_15_STABLE [aef521849] 2023-11-17 10:21:34 +0100
Branch: REL_14_STABLE [75a20a4b4] 2023-11-17 10:27:45 +0100
Branch: REL_13_STABLE [10912f7d4] 2023-11-17 11:46:31 +0100
Branch: REL_12_STABLE [3b991f81c] 2023-11-17 11:47:17 +0100
Branch: REL_12_STABLE [c922b2410] 2023-12-11 12:02:01 +0100
-->
     <para>
      Fix memory leak when performing JIT inlining (Andres Freund,
      Daniel Gustafsson)
      <ulink url="&commit_baseurl;10912f7d4">&sect;</ulink>
     </para>

     <para>
      There have been multiple reports of backend processes suffering
      out-of-memory conditions after sufficiently many JIT compilations.
      This fix should resolve that.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: REL_15_STABLE [f374fb4aa] 2024-01-18 11:12:31 +0900
Branch: REL_14_STABLE [5f6ec27a6] 2024-01-18 11:12:38 +0900
Branch: REL_13_STABLE [dc9d424cf] 2024-01-18 11:12:43 +0900
Branch: REL_12_STABLE [810382285] 2024-01-18 11:12:48 +0900
-->
     <para>
      When dequeueing from an LWLock, avoid needing to search the list of
      waiting processes (Andres Freund)
      <ulink url="&commit_baseurl;dc9d424cf">&sect;</ulink>
     </para>

     <para>
      This fixes O(N^2) behavior when the list of waiters is long.  In
      some use-cases this results in substantial throughput improvements.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL_16_STABLE [62f120203] 2024-02-01 12:34:21 -0500
Branch: REL_15_STABLE [12ec16d11] 2024-02-01 12:34:21 -0500
Branch: REL_14_STABLE [e031995d5] 2024-02-01 12:34:21 -0500
Branch: REL_13_STABLE [7af96a66f] 2024-02-01 12:34:21 -0500
Branch: REL_12_STABLE [2e822a1d6] 2024-02-01 12:34:21 -0500
-->
     <para>
      Avoid generating incorrect partitioned-join plans (Richard Guo)
      <ulink url="&commit_baseurl;7af96a66f">&sect;</ulink>
     </para>

     <para>
      Some uncommon situations involving lateral references could create
      incorrect plans.  Affected queries could produce wrong answers, or
      odd failures such as <quote>variable not found in subplan target
      list</quote>, or executor crashes.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [29f114b6f] 2024-01-11 15:28:22 -0500
Branch: REL_16_STABLE [80bece312] 2024-01-11 15:28:13 -0500
Branch: REL_15_STABLE [a0b4fda44] 2024-01-11 15:28:13 -0500
Branch: REL_14_STABLE [ea1d54288] 2024-01-11 15:28:13 -0500
Branch: REL_13_STABLE [bfd28bb07] 2024-01-11 15:28:13 -0500
Branch: REL_12_STABLE [69c12c417] 2024-01-11 15:28:13 -0500
-->
     <para>
      Fix incorrect wrapping of subquery output expressions in
      PlaceHolderVars (Tom Lane)
      <ulink url="&commit_baseurl;bfd28bb07">&sect;</ulink>
     </para>

     <para>
      This fixes incorrect results when a subquery is underneath an outer
      join and has an output column that laterally references something
      outside the outer join's scope.  The output column might not appear
      as NULL when it should do so due to the action of the outer join.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
Branch: master [2a67b5a60] 2024-01-07 09:10:19 +0200
Branch: REL_16_STABLE [714a987bc] 2024-01-07 09:32:58 +0200
Branch: REL_15_STABLE [1a7c03e6f] 2024-01-07 09:10:40 +0200
Branch: REL_14_STABLE [3bdaa8fc6] 2024-01-07 09:10:49 +0200
Branch: REL_13_STABLE [60de25c6e] 2024-01-07 09:11:00 +0200
Branch: REL_12_STABLE [72d5b2776] 2024-01-07 09:18:43 +0200
Branch: master [6d94cc6ca] 2024-01-08 20:00:20 +0200
Branch: REL_16_STABLE [20a566cd4] 2024-01-08 19:57:09 +0200
Branch: REL_15_STABLE [6eecc3a62] 2024-01-08 19:57:03 +0200
Branch: REL_14_STABLE [97e64911d] 2024-01-08 19:57:58 +0200
Branch: REL_13_STABLE [17b6f39f1] 2024-01-08 19:58:38 +0200
Branch: REL_12_STABLE [a5e2853c3] 2024-01-08 19:58:51 +0200
-->
     <para>
      Avoid requesting an oversize shared-memory area in parallel hash
      join (Thomas Munro, Andrei Lepikhov, Alexander Korotkov)
      <ulink url="&commit_baseurl;60de25c6e">&sect;</ulink>
      <ulink url="&commit_baseurl;17b6f39f1">&sect;</ulink>
     </para>

     <para>
      The limiting value was too large, allowing <quote>invalid DSA memory
      alloc request size</quote> errors to occur with sufficiently large
      expected hash table sizes.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [60f227316] 2023-11-28 12:00:14 +0200
Branch: REL_16_STABLE [9fee3232a] 2023-11-28 11:59:45 +0200
Branch: REL_15_STABLE [2873fbfe0] 2023-11-28 11:59:50 +0200
Branch: REL_14_STABLE [59c62a21f] 2023-11-28 11:59:51 +0200
Branch: REL_13_STABLE [e434d3620] 2023-11-28 11:59:52 +0200
Branch: REL_12_STABLE [b8a606e21] 2023-11-28 11:59:53 +0200
-->
     <para>
      Avoid assertion failures in <function>heap_update()</function>
      and <function>heap_delete()</function> when a tuple to be updated by
      a foreign-key enforcement trigger fails the extra visibility
      crosscheck (Alexander Lakhin)
      <ulink url="&commit_baseurl;e434d3620">&sect;</ulink>
     </para>

     <para>
      This error had no impact in non-assert builds.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [bb812ab09] 2024-01-24 14:20:01 +0900
Branch: REL_16_STABLE [51193e7a7] 2024-01-24 14:20:08 +0900
Branch: REL_15_STABLE [ad6fbbeeb] 2024-01-24 14:20:10 +0900
Branch: REL_14_STABLE [5a7833f49] 2024-01-24 14:20:11 +0900
Branch: REL_13_STABLE [bfec14d06] 2024-01-24 14:20:13 +0900
Branch: REL_12_STABLE [2f7242837] 2024-01-24 14:20:14 +0900
-->
     <para>
      Fix possible failure during <command>ALTER TABLE ADD
      COLUMN</command> on a complex inheritance tree (Tender Wang)
      <ulink url="&commit_baseurl;bfec14d06">&sect;</ulink>
     </para>

     <para>
      If a grandchild table would inherit the new column via multiple
      intermediate parents, the command failed with <quote>tuple already
      updated by self</quote>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [3e91dba8b] 2024-01-31 13:15:21 +0900
Branch: REL_16_STABLE [f33e83285] 2024-01-31 13:16:43 +0900
Branch: REL_15_STABLE [41fa4b31c] 2024-01-31 13:16:46 +0900
Branch: REL_14_STABLE [dde5b01c3] 2024-01-31 13:16:47 +0900
Branch: REL_13_STABLE [4d0e8a008] 2024-01-31 13:16:49 +0900
Branch: REL_12_STABLE [056109782] 2024-01-31 13:16:50 +0900
-->
     <para>
      Fix problems with duplicate token names in <command>ALTER TEXT
      SEARCH CONFIGURATION ... MAPPING</command> commands (Tender Wang,
      Michael Paquier)
      <ulink url="&commit_baseurl;4d0e8a008">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [28f84f72f] 2023-11-19 21:03:38 +0100
Branch: REL_16_STABLE [ee32b824d] 2023-11-19 21:03:50 +0100
Branch: REL_15_STABLE [0177fc773] 2023-11-19 21:04:16 +0100
Branch: REL_14_STABLE [9dd50e92e] 2023-11-19 21:04:28 +0100
Branch: REL_13_STABLE [1e468ea4e] 2023-11-19 21:04:39 +0100
Branch: REL_12_STABLE [4f8d3c5b5] 2023-11-19 21:04:47 +0100
-->
     <para>
      Properly lock the associated table during <command>DROP
      STATISTICS</command> (Tomas Vondra)
      <ulink url="&commit_baseurl;1e468ea4e">&sect;</ulink>
     </para>

     <para>
      Failure to acquire the lock could result in <quote>tuple
      concurrently deleted</quote> errors if the <command>DROP</command>
      executes concurrently with <command>ANALYZE</command>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [743ddafc7] 2023-11-16 10:05:14 -0500
Branch: REL_16_STABLE [f07a3039c] 2023-11-16 10:05:14 -0500
Branch: REL_15_STABLE [9057ddbef] 2023-11-16 10:05:14 -0500
Branch: REL_14_STABLE [9bd0f74ea] 2023-11-16 10:05:14 -0500
Branch: REL_13_STABLE [5c11104c7] 2023-11-16 10:05:14 -0500
Branch: REL_12_STABLE [abd1b1325] 2023-11-16 10:05:14 -0500
-->
     <para>
      Fix function volatility checking for <literal>GENERATED</literal>
      and <literal>DEFAULT</literal> expressions (Tom Lane)
      <ulink url="&commit_baseurl;5c11104c7">&sect;</ulink>
     </para>

     <para>
      These places could fail to detect insertion of a volatile function
      default-argument expression, or decide that a polymorphic function
      is volatile although it is actually immutable on the datatype of
      interest.  This could lead to improperly rejecting or accepting
      a <literal>GENERATED</literal> clause, or to mistakenly applying the
      constant-default-value optimization in <command>ALTER TABLE ADD
      COLUMN</command>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ad98fb142] 2024-01-13 13:46:27 -0500
Branch: REL_16_STABLE [7e2561e1a] 2024-01-13 13:46:27 -0500
Branch: REL_15_STABLE [2a46a0df4] 2024-01-13 13:46:27 -0500
Branch: REL_14_STABLE [db122d426] 2024-01-13 13:46:27 -0500
Branch: REL_13_STABLE [98e03f957] 2024-01-13 13:46:27 -0500
Branch: REL_12_STABLE [3b4d85cf1] 2024-01-13 13:46:27 -0500
Branch: master [96c019ffa] 2024-01-13 13:54:11 -0500
Branch: REL_16_STABLE [56dcd71de] 2024-01-13 13:54:11 -0500
Branch: REL_15_STABLE [d41358f4b] 2024-01-13 13:54:11 -0500
Branch: REL_14_STABLE [7ceeb57ba] 2024-01-13 13:54:11 -0500
Branch: REL_13_STABLE [475b3ea3c] 2024-01-13 13:54:11 -0500
Branch: REL_12_STABLE [d29a4fbac] 2024-01-13 13:54:11 -0500
-->
     <para>
      Detect that a new catalog cache entry became stale while detoasting
      its fields (Tom Lane)
      <ulink url="&commit_baseurl;98e03f957">&sect;</ulink>
      <ulink url="&commit_baseurl;475b3ea3c">&sect;</ulink>
     </para>

     <para>
      We expand any out-of-line fields in a catalog tuple before inserting
      it into the catalog caches.  That involves database access which
      might cause invalidation of catalog cache entries &mdash; but the
      new entry isn't in the cache yet, so we would miss noticing that it
      should get invalidated.  The result is a race condition in which an
      already-stale cache entry could get made, and then persist
      indefinitely.  This would lead to hard-to-predict misbehavior.
      Fix by rechecking the tuple's visibility after detoasting.
     </para>
    </listitem>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [0e3e8fbd3] 2023-11-09 09:50:23 +0000
Branch: REL_16_STABLE [c396aca2b] 2023-11-09 09:53:05 +0000
Branch: REL_15_STABLE [308a69a98] 2023-11-09 09:54:22 +0000
Branch: REL_14_STABLE [dea12b40d] 2023-11-09 09:55:39 +0000
Branch: REL_13_STABLE [4f4a0010a] 2023-11-09 09:56:31 +0000
Branch: REL_12_STABLE [b17a02be2] 2023-11-09 09:57:52 +0000
-->
     <para>
      Fix edge-case integer overflow detection bug on some platforms (Dean
      Rasheed)
      <ulink url="&commit_baseurl;4f4a0010a">&sect;</ulink>
     </para>

     <para>
      Computing <literal>0 - INT64_MIN</literal> should result in an
      overflow error, and did on most platforms.  However, platforms with
      neither integer overflow builtins nor 128-bit integers would fail to
      spot the overflow, instead returning <literal>INT64_MIN</literal>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [25cd2d640] 2024-01-26 13:39:45 -0500
Branch: REL_16_STABLE [7204aea83] 2024-01-26 13:39:37 -0500
Branch: REL_15_STABLE [86b6243a8] 2024-01-26 13:39:37 -0500
Branch: REL_14_STABLE [3eb8a87f6] 2024-01-26 13:39:37 -0500
Branch: REL_13_STABLE [425127bed] 2024-01-26 13:39:37 -0500
Branch: REL_12_STABLE [c3bdb25fb] 2024-01-26 13:39:37 -0500
-->
     <para>
      Detect Julian-date overflow when adding or subtracting
      an <type>interval</type> to/from a <type>timestamp</type> (Tom Lane)
      <ulink url="&commit_baseurl;425127bed">&sect;</ulink>
     </para>

     <para>
      Some cases that should cause an out-of-range error produced an
      incorrect result instead.
     </para>
    </listitem>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [b218fbb7a] 2023-11-18 14:41:20 +0000
Branch: REL_16_STABLE [72d0c135b] 2023-11-18 14:46:02 +0000
Branch: REL_15_STABLE [2851aa7d1] 2023-11-18 14:47:04 +0000
Branch: REL_14_STABLE [2ffcebdba] 2023-11-18 14:48:10 +0000
Branch: REL_13_STABLE [428770aad] 2023-11-18 14:49:18 +0000
Branch: REL_12_STABLE [f499d2b20] 2023-11-18 14:50:00 +0000
-->
     <para>
      Add more checks for overflow in <function>interval_mul()</function>
      and <function>interval_div()</function> (Dean Rasheed)
      <ulink url="&commit_baseurl;428770aad">&sect;</ulink>
     </para>

     <para>
      Some cases that should cause an out-of-range error produced an
      incorrect result instead.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [059de3ca4] 2023-12-26 17:57:48 -0500
Branch: REL_16_STABLE [e87252ceb] 2023-12-26 17:57:48 -0500
Branch: REL_15_STABLE [76dd3d94a] 2023-12-26 17:57:48 -0500
Branch: REL_14_STABLE [bf4f30a0f] 2023-12-26 17:57:48 -0500
Branch: REL_13_STABLE [cb88f44ec] 2023-12-26 17:57:48 -0500
Branch: REL_12_STABLE [ea61b1cf6] 2023-12-26 17:57:48 -0500
-->
     <para>
      Make the <structname>pg_file_settings</structname> view check
      validity of unapplied values for settings
      with <literal>backend</literal>
      or <literal>superuser-backend</literal> context (Tom Lane)
      <ulink url="&commit_baseurl;cb88f44ec">&sect;</ulink>
     </para>

     <para>
      Invalid values were not noted in the view as intended.  This escaped
      detection because there are very few settings in these groups.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [a11c9c42e] 2023-12-01 16:05:41 +0100
Branch: REL_16_STABLE [267f33f68] 2023-12-01 16:09:54 +0100
Branch: REL_15_STABLE [15d485921] 2023-12-01 16:14:22 +0100
Branch: REL_14_STABLE [e846fc491] 2023-12-01 16:17:38 +0100
Branch: REL_13_STABLE [3c49fa2af] 2023-12-01 16:23:18 +0100
Branch: REL_12_STABLE [5d40b3c4f] 2023-12-01 16:27:18 +0100
-->
     <para>
      Match collation too when matching an existing index to a new
      partitioned index (Peter Eisentraut)
      <ulink url="&commit_baseurl;3c49fa2af">&sect;</ulink>
     </para>

     <para>
      Previously we could accept an index that has a different collation
      from the corresponding element of the partition key, possibly
      leading to misbehavior.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [6a1ea02c4] 2024-01-29 13:46:22 +0200
Branch: REL_16_STABLE [b899e00e7] 2024-01-29 13:46:30 +0200
Branch: REL_15_STABLE [e43425f48] 2024-01-29 13:46:42 +0200
Branch: REL_14_STABLE [f120c0872] 2024-01-29 13:46:43 +0200
Branch: REL_13_STABLE [e74c91665] 2024-01-29 13:46:45 +0200
Branch: REL_12_STABLE [e6511fe64] 2024-01-29 13:46:48 +0200
-->
     <para>
      Fix insufficient locking when cleaning up an incomplete split of
      a GIN index's internal page (Fei Changhong, Heikki Linnakangas)
      <ulink url="&commit_baseurl;e74c91665">&sect;</ulink>
     </para>

     <para>
      The code tried to do this with shared rather than exclusive lock on
      the buffer.  This could lead to index corruption if two processes
      attempted the cleanup concurrently.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [5c62ecf6e] 2023-11-13 11:44:35 -0500
Branch: REL_16_STABLE [f76b975d5] 2023-11-13 11:44:48 -0500
Branch: REL_15_STABLE [4c73ec604] 2023-11-13 11:44:57 -0500
Branch: REL_14_STABLE [d900e74e0] 2023-11-13 11:45:04 -0500
Branch: REL_13_STABLE [c859d688b] 2023-11-13 11:45:09 -0500
Branch: REL_12_STABLE [5a6937ec9] 2023-11-13 11:45:13 -0500
-->
     <para>
      Avoid premature release of buffer pin in GIN index insertion
      (Tom Lane)
      <ulink url="&commit_baseurl;c859d688b">&sect;</ulink>
     </para>

     <para>
      If an index root page split occurs concurrently with our own
      insertion, the code could fail with <quote>buffer NNNN is not owned
      by resource owner</quote>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [903737c5b] 2023-12-21 12:43:36 -0500
Branch: REL_16_STABLE [0977bd64e] 2023-12-21 12:43:36 -0500
Branch: REL_15_STABLE [ab04c1901] 2023-12-21 12:43:36 -0500
Branch: REL_14_STABLE [375f441bd] 2023-12-21 12:43:36 -0500
Branch: REL_13_STABLE [cc3865150] 2023-12-21 12:43:36 -0500
Branch: REL_12_STABLE [1771ec9a8] 2023-12-21 12:43:36 -0500
-->
     <para>
      Avoid failure with partitioned SP-GiST indexes (Tom Lane)
      <ulink url="&commit_baseurl;cc3865150">&sect;</ulink>
     </para>

     <para>
      Trying to use an index of this kind could lead to <quote>No such
      file or directory</quote> errors.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [59bd34c2f] 2023-12-15 13:55:05 -0500
Branch: REL_16_STABLE [152bfc0af] 2023-12-15 13:55:05 -0500
Branch: REL_15_STABLE [7a99fb6e1] 2023-12-15 13:55:05 -0500
Branch: REL_14_STABLE [f552f2be2] 2023-12-15 13:55:05 -0500
Branch: REL_13_STABLE [55b5c67da] 2023-12-15 13:55:05 -0500
Branch: REL_12_STABLE [ba66f2533] 2023-12-15 13:55:05 -0500
-->
     <para>
      Fix ownership change reporting for large objects (Tom Lane)
      <ulink url="&commit_baseurl;55b5c67da">&sect;</ulink>
     </para>

     <para>
      A no-op <command>ALTER LARGE OBJECT OWNER</command> command (that
      is, one selecting the existing owner) passed the wrong class ID to
      the <varname>PostAlterHook</varname>, probably confusing any
      extension using that hook.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [8a7cbfce1] 2023-12-12 17:05:18 +0100
Branch: REL_16_STABLE [0e2c05af9] 2023-12-12 17:05:27 +0100
Branch: REL_15_STABLE [f5d8f59ca] 2023-12-12 17:05:29 +0100
Branch: REL_14_STABLE [0cfd3ddfe] 2023-12-12 17:05:33 +0100
Branch: REL_13_STABLE [d99294e77] 2023-12-12 17:05:34 +0100
Branch: REL_12_STABLE [4d45ecc92] 2023-12-12 17:05:36 +0100
-->
     <para>
      Prevent standby servers from incorrectly processing dead index
      tuples during subtransactions (Fei Changhong)
      <ulink url="&commit_baseurl;d99294e77">&sect;</ulink>
     </para>

     <para>
      The <structfield>startedInRecovery</structfield> flag was not
      correctly set for a subtransaction.  This affects only processing of
      dead index tuples.  It could allow a query in a subtransaction to
      ignore index entries that it should return (if they are already dead
      on the primary server, but not dead to the standby transaction), or
      to prematurely mark index entries as dead that are not yet dead on
      the primary.  It is not clear that the latter case has any serious
      consequences, but it's not the intended behavior.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [8d7d2197f] 2023-12-11 08:50:43 +0530
Branch: REL_16_STABLE [01cc92fa6] 2023-12-11 08:36:17 +0530
Branch: REL_15_STABLE [332b43063] 2023-12-11 08:23:33 +0530
Branch: REL_14_STABLE [3f86867d5] 2023-12-11 08:10:46 +0530
Branch: REL_13_STABLE [b47ea4f3d] 2023-12-11 07:57:50 +0530
Branch: REL_12_STABLE [e81e617f3] 2023-12-11 07:45:45 +0530
-->
     <para>
      Fix deadlock between a logical replication apply worker, its
      tablesync worker, and a session process trying to alter the
      subscription (Shlok Kyal)
      <ulink url="&commit_baseurl;b47ea4f3d">&sect;</ulink>
     </para>

     <para>
      One edge of the deadlock loop did not involve a lock wait, so the
      deadlock went undetected and would persist until manual
      intervention.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [aaf09c592] 2024-01-03 17:40:41 -0500
Branch: REL_16_STABLE [fb464a1ae] 2024-01-03 17:40:38 -0500
Branch: REL_15_STABLE [a0d016393] 2024-01-03 17:40:38 -0500
Branch: REL_14_STABLE [9b042e27e] 2024-01-03 17:40:38 -0500
Branch: REL_13_STABLE [5810888c5] 2024-01-03 17:40:38 -0500
Branch: REL_12_STABLE [c20f2aab6] 2024-01-03 17:40:38 -0500
-->
     <para>
      Return the correct status code when a new client disconnects without
      responding to the server's password challenge (Liu Lang, Tom Lane)
      <ulink url="&commit_baseurl;5810888c5">&sect;</ulink>
     </para>

     <para>
      In some cases we'd treat this as a loggable error, which was not the
      intention and tends to create log spam, since common clients
      like <application>psql</application> frequently do this.  It may
      also confuse extensions that
      use <varname>ClientAuthentication_hook</varname>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c82207a54] 2023-11-28 12:34:03 -0500
Branch: REL_16_STABLE [efa8f6064] 2023-11-28 12:34:03 -0500
Branch: REL_15_STABLE [5dd30bb54] 2023-11-28 12:34:03 -0500
Branch: REL_14_STABLE [b2b1f1288] 2023-11-28 12:34:03 -0500
Branch: REL_13_STABLE [efb804682] 2023-11-28 12:34:03 -0500
Branch: REL_12_STABLE [0bd682246] 2023-11-28 12:34:03 -0500
-->
     <para>
      Fix incompatibility with <application>OpenSSL</application> 3.2
      (Tristan Partin, Bo Andreson)
      <ulink url="&commit_baseurl;efb804682">&sect;</ulink>
     </para>

     <para>
      Use the BIO <quote>app_data</quote> field for our private storage,
      instead of assuming it's okay to use the <quote>data</quote> field.
      This mistake didn't cause problems before, but with 3.2 it leads
      to crashes and complaints about double frees.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [0a5c46a7a] 2023-12-11 11:51:56 -0500
Branch: REL_16_STABLE [ebbd499d4] 2023-12-11 11:51:56 -0500
Branch: REL_15_STABLE [551d4b28e] 2023-12-11 11:51:56 -0500
Branch: REL_14_STABLE [07ce24326] 2023-12-11 11:51:56 -0500
Branch: REL_13_STABLE [87b46ad90] 2023-12-11 11:51:56 -0500
Branch: REL_12_STABLE [271d24f31] 2023-12-11 11:51:56 -0500
-->
     <para>
      Be more wary about <application>OpenSSL</application> not
      setting <varname>errno</varname> on error (Tom Lane)
      <ulink url="&commit_baseurl;87b46ad90">&sect;</ulink>
     </para>

     <para>
      If <varname>errno</varname> isn't set, assume the cause of the
      reported failure is read EOF.  This fixes rare cases of strange
      error reports like <quote>could not accept SSL connection:
      Success</quote>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [e4e63cd98] 2024-02-02 15:34:29 -0500
Branch: REL_16_STABLE [a15378100] 2024-02-02 15:34:29 -0500
Branch: REL_15_STABLE [3766b8b64] 2024-02-02 15:34:29 -0500
Branch: REL_14_STABLE [329b96882] 2024-02-02 15:34:29 -0500
Branch: REL_13_STABLE [29df29dad] 2024-02-02 15:34:29 -0500
Branch: REL_12_STABLE [4493bfb70] 2024-02-02 15:34:29 -0500
-->
     <para>
      Report <systemitem>ENOMEM</systemitem> errors from file-related system
      calls as <literal>ERRCODE_OUT_OF_MEMORY</literal>,
      not <literal>ERRCODE_INTERNAL_ERROR</literal> (Alexander Kuzmenkov)
      <ulink url="&commit_baseurl;29df29dad">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [01eca6a91] 2023-11-27 09:40:44 +0900
Branch: REL_16_STABLE [8984480b5] 2023-11-27 09:40:49 +0900
Branch: REL_15_STABLE [b97226815] 2023-11-27 09:40:50 +0900
Branch: REL_14_STABLE [c3b79223f] 2023-11-27 09:40:52 +0900
Branch: REL_13_STABLE [09f680d11] 2023-11-27 09:40:55 +0900
Branch: REL_12_STABLE [0217a7444] 2023-11-27 09:40:57 +0900
-->
     <para>
      Avoid race condition when <application>libpq</application>
      initializes OpenSSL support concurrently in two different threads
      (Willi Mann, Michael Paquier)
      <ulink url="&commit_baseurl;09f680d11">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d053a879b] 2023-11-23 13:30:18 -0500
Branch: REL_16_STABLE [85eb77185] 2023-11-23 13:30:18 -0500
Branch: REL_15_STABLE [a50053777] 2023-11-23 13:30:18 -0500
Branch: REL_14_STABLE [8f23e6a45] 2023-11-23 13:30:18 -0500
Branch: REL_13_STABLE [5abdfd88f] 2023-11-23 13:30:18 -0500
Branch: REL_12_STABLE [18fad508b] 2023-11-23 13:30:19 -0500
-->
     <para>
      Fix timing-dependent failure in GSSAPI data transmission (Tom Lane)
      <ulink url="&commit_baseurl;5abdfd88f">&sect;</ulink>
     </para>

     <para>
      When using GSSAPI encryption in non-blocking
      mode, <application>libpq</application> sometimes failed
      with <quote>GSSAPI caller failed to retransmit all data needing to
      be retried</quote>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a70f2a57f] 2023-11-13 17:04:26 -0500
Branch: REL_16_STABLE [64d2467fc] 2023-11-13 17:04:26 -0500
Branch: REL_15_STABLE [f15147df6] 2023-11-13 17:04:10 -0500
Branch: REL_14_STABLE [15439205d] 2023-11-13 17:04:10 -0500
Branch: REL_13_STABLE [9e08789d4] 2023-11-13 17:04:10 -0500
Branch: REL_12_STABLE [891afa84c] 2023-11-13 17:04:10 -0500
Branch: master [1e3f461e8] 2023-11-14 00:31:39 -0500
Branch: REL_16_STABLE [f1674ac6b] 2023-11-14 00:31:39 -0500
Branch: REL_15_STABLE [63c1b4d88] 2023-11-14 00:31:39 -0500
Branch: REL_14_STABLE [c532be99d] 2023-11-14 00:31:39 -0500
Branch: REL_13_STABLE [7836f6838] 2023-11-14 00:31:39 -0500
Branch: REL_12_STABLE [e43790342] 2023-11-14 00:31:39 -0500
-->
     <para>
      In <application>pg_dump</application>, don't dump RLS policies or
      security labels for extension member objects (Tom Lane, Jacob
      Champion)
      <ulink url="&commit_baseurl;9e08789d4">&sect;</ulink>
      <ulink url="&commit_baseurl;7836f6838">&sect;</ulink>
     </para>

     <para>
      Previously, commands would be included in the dump to set these
      properties, which is really incorrect since they should be
      considered as internal affairs of the extension.  Moreover, the
      restoring user might not have adequate privilege to set them, and
      indeed the dumping user might not have enough privilege to dump them
      (since dumping RLS policies requires acquiring lock on their table).
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [7418767f1] 2023-12-29 10:57:11 -0500
Branch: REL_16_STABLE [b2c9936a7] 2023-12-29 10:57:11 -0500
Branch: REL_15_STABLE [1e0841426] 2023-12-29 10:57:11 -0500
Branch: REL_14_STABLE [aa2e323ee] 2023-12-29 10:57:11 -0500
Branch: REL_13_STABLE [8d4e8b746] 2023-12-29 10:57:11 -0500
Branch: REL_12_STABLE [69d7edb06] 2023-12-29 10:57:11 -0500
-->
     <para>
      In <application>pg_dump</application>, don't dump an extended
      statistics object if its underlying table isn't being dumped
      (Rian McGuire, Tom Lane)
      <ulink url="&commit_baseurl;8d4e8b746">&sect;</ulink>
     </para>

     <para>
      This conforms to the behavior for other dependent objects such as
      indexes.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9034a2d51] 2024-01-07 15:19:50 -0500
Branch: REL_16_STABLE [cf6f802bf] 2024-01-07 15:19:50 -0500
Branch: REL_15_STABLE [940ab02b5] 2024-01-07 15:19:50 -0500
Branch: REL_14_STABLE [90e8b86fc] 2024-01-07 15:19:50 -0500
Branch: REL_13_STABLE [9e7432faf] 2024-01-07 15:19:50 -0500
Branch: REL_12_STABLE [1c7443521] 2024-01-07 15:19:50 -0500
-->
     <para>
      Fix crash in <filename>contrib/intarray</filename> if an array with
      an element equal to <literal>INT_MAX</literal> is inserted into
      a <literal>gist__int_ops</literal> index
      (Alexander Lakhin, Tom Lane)
      <ulink url="&commit_baseurl;9e7432faf">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [208470136] 2023-12-19 18:19:05 +0900
Branch: REL_16_STABLE [7f68b1462] 2023-12-19 18:19:15 +0900
Branch: REL_15_STABLE [2e08440d6] 2023-12-19 18:19:16 +0900
Branch: REL_14_STABLE [bfbe4a146] 2023-12-19 18:19:18 +0900
Branch: REL_13_STABLE [586c6a091] 2023-12-19 18:19:19 +0900
Branch: REL_12_STABLE [f610d4f11] 2023-12-19 18:19:21 +0900
-->
     <para>
      Report a better error
      when <filename>contrib/pageinspect</filename>'s
      <function>hash_bitmap_info()</function> function is applied to a
      partitioned hash index (Alexander Lakhin, Michael Paquier)
      <ulink url="&commit_baseurl;586c6a091">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [a8dd62ef4] 2023-12-19 15:20:39 +0900
Branch: REL_16_STABLE [b4948ed66] 2023-12-19 15:20:48 +0900
Branch: REL_15_STABLE [b745f1680] 2023-12-19 15:20:50 +0900
Branch: REL_14_STABLE [f729fdab4] 2023-12-19 15:20:52 +0900
Branch: REL_13_STABLE [b4c1d255c] 2023-12-19 15:20:53 +0900
Branch: REL_12_STABLE [bd2d3c928] 2023-12-19 15:20:55 +0900
-->
     <para>
      Report a better error
      when <filename>contrib/pgstattuple</filename>'s
      <function>pgstathashindex()</function> function is applied to a
      partitioned hash index (Alexander Lakhin)
      <ulink url="&commit_baseurl;b4c1d255c">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [9886744a3] 2024-01-10 10:41:57 +0900
Branch: REL_16_STABLE [714bfb781] 2024-01-12 13:53:07 +0900
Branch: REL_15_STABLE [33d1be06a] 2024-01-12 13:53:10 +0900
Branch: REL_14_STABLE [4c6944223] 2024-01-12 13:53:12 +0900
Branch: REL_13_STABLE [c8aab699e] 2024-01-12 13:53:13 +0900
Branch: REL_12_STABLE [9e70e6564] 2024-01-12 13:53:14 +0900
Branch: master [b83747a8a] 2024-01-11 10:39:58 +0900
Branch: REL_16_STABLE [506c77f9b] 2024-01-12 13:59:51 +0900
Branch: REL_15_STABLE [7e7d827f5] 2024-01-12 13:59:58 +0900
Branch: REL_14_STABLE [4a7475e9a] 2024-01-12 14:00:00 +0900
Branch: REL_13_STABLE [2a0eb80ae] 2024-01-12 14:00:01 +0900
Branch: REL_12_STABLE [e50a52b2b] 2024-01-12 14:00:02 +0900
-->
     <para>
      On Windows, suppress autorun options when launching subprocesses
      in <application>pg_ctl</application>
      and <application>pg_regress</application> (Kyotaro Horiguchi)
      <ulink url="&commit_baseurl;c8aab699e">&sect;</ulink>
      <ulink url="&commit_baseurl;2a0eb80ae">&sect;</ulink>
     </para>

     <para>
      When launching a child process via <filename>cmd.exe</filename>,
      pass the <option>/D</option> flag to prevent executing any autorun
      commands specified in the registry.  This avoids possibly-surprising
      side effects.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [400928b83] 2024-01-29 12:06:13 -0500
Branch: REL_16_STABLE [e02fea093] 2024-01-29 12:06:07 -0500
Branch: REL_15_STABLE [3f8ac13b1] 2024-01-29 12:06:07 -0500
Branch: REL_14_STABLE [29e25a6b1] 2024-01-29 12:06:08 -0500
Branch: REL_13_STABLE [7c53b1977] 2024-01-29 12:06:08 -0500
Branch: REL_12_STABLE [b2fd1dab9] 2024-01-29 12:06:08 -0500
-->
     <para>
      Fix compilation failures with <application>libxml2</application>
      version 2.12.0 and later (Tom Lane)
      <ulink url="&commit_baseurl;7c53b1977">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [7636725b9] 2023-12-06 14:10:39 +0900
Branch: REL_16_STABLE [6248a2bb9] 2023-12-06 14:11:41 +0900
Branch: REL_15_STABLE [87ed81a87] 2023-12-06 14:11:44 +0900
Branch: REL_14_STABLE [c49b6cab1] 2023-12-06 14:11:46 +0900
Branch: REL_13_STABLE [7d5a74033] 2023-12-06 14:11:47 +0900
-->
     <para>
      Fix compilation failure of <literal>WAL_DEBUG</literal> code on
      Windows (Bharath Rupireddy)
      <ulink url="&commit_baseurl;7d5a74033">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [58c3151bb] 2023-12-26 16:16:37 -0500
Branch: REL_16_STABLE [b0115e7e2] 2023-12-26 16:16:29 -0500
Branch: REL_15_STABLE [5f8d6d709] 2023-12-26 16:16:29 -0500
Branch: REL_14_STABLE [7978eee02] 2023-12-26 16:16:29 -0500
Branch: REL_13_STABLE [48e797164] 2023-12-26 16:16:29 -0500
Branch: REL_12_STABLE [1613e2fae] 2023-12-26 16:16:29 -0500
Branch: master [a46972e30] 2023-12-26 17:03:02 -0500
Branch: REL_16_STABLE [c72049dbc] 2023-12-26 17:03:24 -0500
-->
     <para>
      Suppress compiler warnings from Python's header files
      (Peter Eisentraut, Tom Lane)
      <ulink url="&commit_baseurl;48e797164">&sect;</ulink>
     </para>

     <para>
      Our preferred compiler options provoke warnings about constructs
      appearing in recent versions of Python's header files.  When using
      <application>gcc</application>, we can suppress these warnings with
      a pragma.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [d282e88e5] 2024-01-25 13:44:54 +1300
Branch: REL_16_STABLE [60ba7cae7] 2024-01-25 13:45:22 +1300
Branch: REL_15_STABLE [67f7aaa38] 2024-01-25 13:46:07 +1300
Branch: REL_14_STABLE [364283c92] 2024-01-25 13:46:38 +1300
Branch: REL_13_STABLE [70a82f40a] 2024-01-25 13:47:20 +1300
Branch: REL_12_STABLE [d060cb658] 2024-01-25 13:47:35 +1300
-->
     <para>
      Avoid deprecation warning when compiling with LLVM 18 (Thomas Munro)
      <ulink url="&commit_baseurl;70a82f40a">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [272a7c303] 2024-02-01 15:57:53 -0500
Branch: REL_16_STABLE [b4fb76fb5] 2024-02-01 15:57:53 -0500
Branch: REL_15_STABLE [970b1aeeb] 2024-02-01 15:57:53 -0500
Branch: REL_14_STABLE [35b8b2c4a] 2024-02-01 15:57:53 -0500
Branch: REL_13_STABLE [ac3afc3f7] 2024-02-01 15:57:53 -0500
Branch: REL_12_STABLE [b59ae79b7] 2024-02-01 15:57:53 -0500
-->
     <para>
      Update time zone data files to <application>tzdata</application>
      release 2024a for DST law changes in Greenland, Kazakhstan, and
      Palestine, plus corrections for the Antarctic stations Casey and
      Vostok.  Also historical corrections for Vietnam, Toronto, and
      Miquelon. (Tom Lane)
      <ulink url="&commit_baseurl;ac3afc3f7">&sect;</ulink>
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-13">
  <title>Release 13.13</title>

  <formalpara>
  <title>Release date:</title>
  <para>2023-11-09</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.12.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.13</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, several mistakes have been discovered that could lead to
    certain types of indexes yielding wrong search results.
    It is advisable
    to <command>REINDEX</command> potentially-affected indexes after
    installing this update.  See the fourth and fifth changelog
    entries below.
   </para>

   <para>
    Also, if you are upgrading from a version earlier than 13.12,
    see <xref linkend="release-13-12"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [3b0776fde] 2023-11-06 10:38:00 -0500
Branch: REL_16_STABLE [d3d1e2509] 2023-11-06 10:38:00 -0500
Branch: REL_15_STABLE [4f4a422fb] 2023-11-06 10:38:00 -0500
Branch: REL_14_STABLE [9146d0d65] 2023-11-06 10:38:00 -0500
Branch: REL_13_STABLE [d3de70fdb] 2023-11-06 10:38:00 -0500
Branch: REL_12_STABLE [e911afd09] 2023-11-06 10:38:00 -0500
Branch: REL_11_STABLE [8c6633f4d] 2023-11-06 10:38:00 -0500
-->
     <para>
      Fix handling of unknown-type arguments
      in <literal>DISTINCT</literal> <type>"any"</type> aggregate
      functions (Tom Lane)
      <ulink url="&commit_baseurl;d3de70fdb">&sect;</ulink>
     </para>

     <para>
      This error led to a <type>text</type>-type value being interpreted
      as an <type>unknown</type>-type value (that is, a zero-terminated
      string) at runtime.  This could result in disclosure of server
      memory following the <type>text</type> value.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks Jingzhou Fu
      for reporting this problem.
      (CVE-2023-5868)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [18b585155] 2023-11-06 10:56:43 -0500
Branch: REL_16_STABLE [e24daa94b] 2023-11-06 10:56:43 -0500
Branch: REL_15_STABLE [3bc6bc3ee] 2023-11-06 10:56:43 -0500
Branch: REL_14_STABLE [edc0a8d82] 2023-11-06 10:56:43 -0500
Branch: REL_13_STABLE [26c599beb] 2023-11-06 10:56:43 -0500
Branch: REL_12_STABLE [d267cea24] 2023-11-06 10:56:43 -0500
Branch: REL_11_STABLE [c48008f59] 2023-11-06 10:56:43 -0500
-->
     <para>
      Detect integer overflow while computing new array dimensions
      (Tom Lane)
      <ulink url="&commit_baseurl;26c599beb">&sect;</ulink>
     </para>

     <para>
      When assigning new elements to array subscripts that are outside the
      current array bounds, an undetected integer overflow could occur in
      edge cases.  Memory stomps that are potentially exploitable for
      arbitrary code execution are possible, and so is disclosure of
      server memory.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks Pedro
      Gallegos for reporting this problem.
      (CVE-2023-5869)
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [3a9b18b30] 2023-11-06 06:14:13 -0800
Branch: REL_16_STABLE [785412731] 2023-11-06 06:14:16 -0800
Branch: REL_15_STABLE [595c988c9] 2023-11-06 06:14:16 -0800
Branch: REL_14_STABLE [508acb901] 2023-11-06 06:14:17 -0800
Branch: REL_13_STABLE [28b609550] 2023-11-06 06:14:17 -0800
Branch: REL_12_STABLE [2893f2f40] 2023-11-06 06:14:17 -0800
Branch: REL_11_STABLE [e082734c8] 2023-11-06 06:14:18 -0800
Author: Noah Misch <noah@leadboat.com>
Branch: master [b72de09a1] 2023-11-06 06:14:13 -0800
Branch: REL_16_STABLE [2c3c5ec49] 2023-11-06 06:14:16 -0800
Branch: REL_15_STABLE [fbc371909] 2023-11-06 06:14:16 -0800
Branch: REL_14_STABLE [ecd5d240c] 2023-11-06 06:14:17 -0800
Branch: REL_13_STABLE [2c7a2a00a] 2023-11-06 06:14:17 -0800
Branch: REL_12_STABLE [7bbf4d037] 2023-11-06 06:14:17 -0800
Branch: REL_11_STABLE [a27be40c1] 2023-11-06 06:14:18 -0800
-->
     <para>
      Prevent the <literal>pg_signal_backend</literal> role from
      signalling background workers and autovacuum processes
      (Noah Misch, Jelte Fennema-Nio)
      <ulink url="&commit_baseurl;28b609550">&sect;</ulink>
      <ulink url="&commit_baseurl;2c7a2a00a">&sect;</ulink>
     </para>

     <para>
      The documentation says that <literal>pg_signal_backend</literal>
      cannot issue signals to superuser-owned processes.  It was able to
      signal these background processes, though, because they advertise a
      role OID of zero.  Treat that as indicating superuser ownership.
      The security implications of cancelling one of these process types
      are fairly small so far as the core code goes (we'll just start
      another one), but extensions might add background workers that are
      more vulnerable.
     </para>

     <para>
      Also ensure that the <varname>is_superuser</varname> parameter is
      set correctly in such processes.  No specific security consequences
      are known for that oversight, but it might be significant for some
      extensions.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Hemanth Sandrana and Mahendrakar Srinivasarao
      for reporting this problem.
      (CVE-2023-5870)
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [28d3c2ddc] 2023-09-26 14:14:49 +0300
Branch: REL_16_STABLE [d7f521325] 2023-09-26 14:15:01 +0300
Branch: REL_15_STABLE [c3c284b37] 2023-09-26 14:15:19 +0300
Branch: REL_14_STABLE [747cef5a5] 2023-09-26 14:15:28 +0300
Branch: REL_13_STABLE [db7394d4d] 2023-09-26 14:15:35 +0300
Branch: REL_12_STABLE [26917ebea] 2023-09-26 15:41:44 +0300
-->
     <para>
      Fix misbehavior during recursive page split in GiST index build
      (Heikki Linnakangas)
      <ulink url="&commit_baseurl;db7394d4d">&sect;</ulink>
     </para>

     <para>
      Fix a case where the location of a page downlink was incorrectly
      tracked, and introduce some logic to allow recovering from such
      situations rather than silently doing the wrong thing.  This error
      could result in incorrect answers from subsequent index searches.
      It may be advisable to reindex all GiST indexes after installing
      this update.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [5f27b5f84] 2023-10-14 16:33:51 -0700
Branch: REL_16_STABLE [bf1c21c4f] 2023-10-14 16:33:54 -0700
Branch: REL_15_STABLE [782be0f71] 2023-10-14 16:33:54 -0700
Branch: REL_14_STABLE [0834df909] 2023-10-14 16:33:54 -0700
Branch: REL_13_STABLE [6fd1dbdb2] 2023-10-14 16:33:54 -0700
-->
     <para>
      Prevent de-duplication of btree index entries
      for <type>interval</type> columns (Noah Misch)
      <ulink url="&commit_baseurl;6fd1dbdb2">&sect;</ulink>
     </para>

     <para>
      There are <type>interval</type> values that are distinguishable but
      compare equal, for example <literal>24:00:00</literal>
      and <literal>1 day</literal>.  This breaks assumptions made by btree
      de-duplication, so <type>interval</type> columns need to be excluded
      from de-duplication.  This oversight can cause incorrect results
      from index-only scans.  Moreover, after
      updating <application>amcheck</application> will report an error for
      almost all such indexes.  Users should reindex any btree indexes
      on <type>interval</type> columns.
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [d9e46dfb7] 2023-10-13 01:12:31 +1300
Branch: REL_16_STABLE [595db9e9c] 2023-10-13 01:13:07 +1300
Branch: REL_15_STABLE [1e81d3e6e] 2023-10-13 01:13:36 +1300
Branch: REL_14_STABLE [d26f33c32] 2023-10-13 01:13:59 +1300
Branch: REL_13_STABLE [890a73ba3] 2023-10-13 01:14:22 +1300
Branch: REL_12_STABLE [3cc0c2517] 2023-10-13 01:14:46 +1300
Branch: REL_11_STABLE [2759924f3] 2023-10-13 01:15:12 +1300
Author: David Rowley <drowley@postgresql.org>
Branch: master [f0c409d9c] 2023-10-12 19:50:38 +1300
Branch: REL_16_STABLE [6352f1627] 2023-10-12 19:51:26 +1300
Branch: REL_15_STABLE [916adc7c5] 2023-10-12 19:52:05 +1300
Branch: REL_14_STABLE [cd15bff48] 2023-10-12 19:52:31 +1300
Branch: REL_13_STABLE [45c4b2a3a] 2023-10-12 19:52:58 +1300
Branch: REL_12_STABLE [cd259de50] 2023-10-12 19:53:23 +1300
Branch: REL_11_STABLE [07f261b31] 2023-10-12 19:53:50 +1300
-->
     <para>
      Fix partition step generation and runtime partition pruning for
      hash-partitioned tables with multiple partition keys (David Rowley)
      <ulink url="&commit_baseurl;890a73ba3">&sect;</ulink>
      <ulink url="&commit_baseurl;45c4b2a3a">&sect;</ulink>
     </para>

     <para>
      Some cases involving an <literal>IS NULL</literal> condition on one
      of the partition keys could result in a crash.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Geoghegan <pg@bowt.ie>
Branch: master [714780dcd] 2023-09-28 16:29:37 -0700
Branch: REL_16_STABLE [3fa81b62e] 2023-09-28 16:29:35 -0700
Branch: REL_15_STABLE [cac37c1a1] 2023-09-28 16:29:32 -0700
Branch: REL_14_STABLE [41486c4aa] 2023-09-28 16:29:29 -0700
Branch: REL_13_STABLE [d4724e94a] 2023-09-28 16:29:27 -0700
Branch: REL_12_STABLE [b36d72cbc] 2023-09-28 16:29:24 -0700
Branch: REL_11_STABLE [7c07305e6] 2023-09-28 16:29:22 -0700
-->
     <para>
      Fix edge case in btree mark/restore processing of ScalarArrayOpExpr
      clauses (Peter Geoghegan)
      <ulink url="&commit_baseurl;d4724e94a">&sect;</ulink>
     </para>

     <para>
      When restoring an indexscan to a previously marked position, the
      code could miss required setup steps if the scan had advanced
      exactly to the end of the matches for a ScalarArrayOpExpr (that is,
      an <literal>indexcol = ANY(ARRAY[])</literal>) clause.  This could
      result in missing some rows that should have been fetched.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [237f8765d] 2023-10-28 14:05:01 -0400
Branch: REL_16_STABLE [07494a0df] 2023-10-28 14:04:43 -0400
Branch: REL_15_STABLE [592cb11fb] 2023-10-28 14:04:43 -0400
Branch: REL_14_STABLE [5d7515d7d] 2023-10-28 14:04:43 -0400
Branch: REL_13_STABLE [b7684473d] 2023-10-28 14:04:43 -0400
Branch: REL_12_STABLE [d8d7f282f] 2023-10-28 14:04:43 -0400
Branch: REL_11_STABLE [7ab6971c6] 2023-10-28 14:04:43 -0400
-->
     <para>
      Fix intra-query memory leak when a set-returning function repeatedly
      returns zero rows (Tom Lane)
      <ulink url="&commit_baseurl;b7684473d">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [f73fa5a47] 2023-09-18 14:28:17 -0400
Branch: REL_16_STABLE [ec693a3f3] 2023-09-18 14:27:47 -0400
Branch: REL_15_STABLE [95f54f0d0] 2023-09-18 14:27:47 -0400
Branch: REL_14_STABLE [9baabfa38] 2023-09-18 14:27:47 -0400
Branch: REL_13_STABLE [e6e50ada0] 2023-09-18 14:27:47 -0400
Branch: REL_12_STABLE [123337079] 2023-09-18 14:27:47 -0400
Branch: REL_11_STABLE [db00be6d7] 2023-09-18 14:27:47 -0400
-->
     <para>
      Don't crash if <function>cursor_to_xmlschema()</function> is applied
      to a non-data-returning Portal (Boyu Yang)
      <ulink url="&commit_baseurl;e6e50ada0">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [73635b6d6] 2023-10-31 16:42:08 +1300
Branch: REL_16_STABLE [a98f01c93] 2023-10-31 16:42:35 +1300
Branch: REL_15_STABLE [136068353] 2023-10-31 16:43:01 +1300
Branch: REL_14_STABLE [c5988e69f] 2023-10-31 16:43:28 +1300
Branch: REL_13_STABLE [b3c8d1d0e] 2023-10-31 16:44:00 +1300
Branch: REL_12_STABLE [efcb601d2] 2023-10-31 16:44:27 +1300
-->
     <para>
      Throw the intended error if <function>pgrowlocks()</function> is
      applied to a partitioned table (David Rowley)
      <ulink url="&commit_baseurl;b3c8d1d0e">&sect;</ulink>
     </para>

     <para>
      Previously, a not-on-point complaint <quote>only heap AM is
      supported</quote> would be raised.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [13503eb59] 2023-10-30 14:46:05 -0700
Branch: REL_16_STABLE [1a368dd3e] 2023-10-30 14:46:08 -0700
Branch: REL_15_STABLE [e633e9b13] 2023-10-30 14:46:08 -0700
Branch: REL_14_STABLE [0a7b183fd] 2023-10-30 14:46:09 -0700
Branch: REL_13_STABLE [123b0d111] 2023-10-30 14:46:09 -0700
Branch: REL_12_STABLE [975ae0553] 2023-10-30 14:46:09 -0700
Branch: REL_11_STABLE [bae063db4] 2023-10-30 14:46:09 -0700
-->
     <para>
      Handle invalid indexes more cleanly in assorted SQL functions
      (Noah Misch)
      <ulink url="&commit_baseurl;123b0d111">&sect;</ulink>
     </para>

     <para>
      Report an error if <function>pgstatindex()</function>,
      <function>pgstatginindex()</function>,
      <function>pgstathashindex()</function>,
      or <function>pgstattuple()</function> is applied to an invalid
      index.  If <function>brin_desummarize_range()</function>,
      <function>brin_summarize_new_values()</function>,
      <function>brin_summarize_range()</function>,
      or <function>gin_clean_pending_list()</function> is applied to an
      invalid index, do nothing except to report a debug-level message.
      Formerly these functions attempted to process the index, and might
      fail in strange ways depending on what the failed <command>CREATE
      INDEX</command> had left behind.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [cf1c65070] 2023-09-25 11:50:28 -0400
Branch: REL_16_STABLE [8465efc1a] 2023-09-25 11:50:28 -0400
Branch: REL_15_STABLE [71bb73f60] 2023-09-25 11:50:28 -0400
Branch: REL_14_STABLE [a2799f53d] 2023-09-25 11:50:28 -0400
Branch: REL_13_STABLE [52a676ef4] 2023-09-25 11:50:28 -0400
Branch: REL_12_STABLE [4a81ed29d] 2023-09-25 11:50:28 -0400
Branch: REL_11_STABLE [0fb91ed2b] 2023-09-25 11:50:28 -0400
-->
     <para>
      Avoid premature memory allocation failure with long inputs
      to <function>to_tsvector()</function> (Tom Lane)
      <ulink url="&commit_baseurl;52a676ef4">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [5b7b38246] 2023-10-01 13:16:47 -0400
Branch: REL_16_STABLE [5c34a7374] 2023-10-01 13:16:59 -0400
Branch: REL_15_STABLE [55e188a15] 2023-10-01 13:17:06 -0400
Branch: REL_14_STABLE [cf12c4fd2] 2023-10-01 13:17:11 -0400
Branch: REL_13_STABLE [9da153846] 2023-10-01 13:17:15 -0400
Branch: REL_12_STABLE [2296bc362] 2023-10-01 13:17:20 -0400
Branch: REL_11_STABLE [7a310cae0] 2023-10-01 13:17:25 -0400
-->
     <para>
      Fix over-allocation of the constructed <type>tsvector</type>
      in <function>tsvectorrecv()</function> (Denis Erokhin)
      <ulink url="&commit_baseurl;9da153846">&sect;</ulink>
     </para>

     <para>
      If the incoming vector includes position data, the binary receive
      function left wasted space (roughly equal to the size of the
      position data) in the finished <type>tsvector</type>.  In extreme
      cases this could lead to <quote>maximum total lexeme length
      exceeded</quote> failures for vectors that were under the length
      limit when emitted.  In any case it could lead to wasted space
      on-disk.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [ae10dbb0c] 2023-09-04 14:55:37 +0900
Branch: REL_16_STABLE Release: REL_16_0 [fac3fa0d5] 2023-09-04 14:55:49 +0900
Branch: REL_15_STABLE [88aa4a049] 2023-09-04 14:55:51 +0900
Branch: REL_14_STABLE [df11421d8] 2023-09-04 14:55:53 +0900
Branch: REL_13_STABLE [82fa8ae5f] 2023-09-04 14:55:55 +0900
Branch: REL_12_STABLE [40ddb8db9] 2023-09-04 14:55:57 +0900
Branch: REL_11_STABLE [358cd2b25] 2023-09-04 14:55:58 +0900
-->
     <para>
      Fix incorrect coding in <function>gtsvector_picksplit()</function>
      (Alexander Lakhin)
      <ulink url="&commit_baseurl;82fa8ae5f">&sect;</ulink>
     </para>

     <para>
      This could lead to poor page-split decisions in GiST indexes
      on <type>tsvector</type> columns.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9b103f861] 2023-10-18 20:43:27 -0400
Branch: REL_16_STABLE [cfa4eba02] 2023-10-18 20:43:17 -0400
Branch: REL_15_STABLE [985ac5ce2] 2023-10-18 20:43:17 -0400
Branch: REL_14_STABLE [2c63dc035] 2023-10-18 20:43:17 -0400
Branch: REL_13_STABLE [817669ea2] 2023-10-18 20:43:17 -0400
-->
     <para>
      Improve checks for corrupt PGLZ compressed data (Flavien Guedez)
      <ulink url="&commit_baseurl;817669ea2">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [48e2b234f] 2023-09-21 23:11:30 -0400
Branch: REL_16_STABLE [227c7cf15] 2023-09-21 23:11:30 -0400 !! no live bug
Branch: REL_15_STABLE [77dc81602] 2023-09-21 23:11:31 -0400 !! no live bug
Branch: REL_14_STABLE [10323f140] 2023-09-21 23:11:31 -0400
Branch: REL_13_STABLE [555a8d9d3] 2023-09-21 23:11:31 -0400
Branch: REL_12_STABLE [7cabb20a9] 2023-09-21 23:11:31 -0400
-->
     <para>
      Fix <command>COMMIT AND CHAIN</command>/<command>ROLLBACK AND
      CHAIN</command> to work properly when there is an unreleased
      savepoint (Liu Xiang, Tom Lane)
      <ulink url="&commit_baseurl;555a8d9d3">&sect;</ulink>
     </para>

     <para>
      Instead of propagating the current transaction's properties to the
      new transaction, they propagated some previous transaction's
      properties.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [7704a1a72] 2023-11-02 11:47:33 -0400
Branch: REL_16_STABLE [82063edd4] 2023-11-02 11:47:33 -0400
Branch: REL_15_STABLE [ae33659d4] 2023-11-02 11:47:33 -0400
Branch: REL_14_STABLE [47c0f00cf] 2023-11-02 11:47:33 -0400
Branch: REL_13_STABLE [137227c6d] 2023-11-02 11:47:33 -0400
Branch: REL_12_STABLE [65810fc6d] 2023-11-02 11:47:33 -0400
Branch: REL_11_STABLE [6e1cca511] 2023-11-02 11:47:33 -0400 !! no live bug
-->
     <para>
      Avoid crash in <command>EXPLAIN</command> if a parameter marked to
      be displayed by <command>EXPLAIN</command> has a NULL boot-time
      value (Xing Guo, Aleksander Alekseev, Tom Lane)
      <ulink url="&commit_baseurl;137227c6d">&sect;</ulink>
     </para>

     <para>
      No built-in parameter fits this description, but an extension could
      define such a parameter.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [54b208f90] 2023-10-16 14:06:14 -0400
Branch: REL_16_STABLE [57e6e861d] 2023-10-16 14:06:15 -0400
Branch: REL_15_STABLE [0d1a7cd14] 2023-10-16 14:06:15 -0400
Branch: REL_14_STABLE [f6e1ee3cf] 2023-10-16 14:06:11 -0400
Branch: REL_13_STABLE [1e678175c] 2023-10-16 14:06:11 -0400
Branch: REL_12_STABLE [07eb22a77] 2023-10-16 14:06:11 -0400
Branch: REL_11_STABLE [a295684b8] 2023-10-16 14:06:12 -0400
-->
     <para>
      Ensure we have a snapshot while dropping <literal>ON COMMIT
      DROP</literal> temp tables (Tom Lane)
      <ulink url="&commit_baseurl;1e678175c">&sect;</ulink>
     </para>

     <para>
      This prevents possible misbehavior if any catalog entries for the
      temp tables have fields wide enough to require toasting (such as a
      very complex <literal>CHECK</literal> condition).
     </para>
    </listitem>

    <listitem>
<!--
Author: Nathan Bossart <nathan@postgresql.org>
Branch: master [97550c071] 2023-10-17 10:41:48 -0500
Branch: REL_16_STABLE [ee06199fc] 2023-10-17 10:41:58 -0500
Branch: REL_15_STABLE [c9265ae80] 2023-10-17 10:42:06 -0500
Branch: REL_14_STABLE [54fc9dca5] 2023-10-17 10:42:12 -0500
Branch: REL_13_STABLE [ac1dfc303] 2023-10-17 10:42:17 -0500
Branch: REL_12_STABLE [e2e169042] 2023-10-17 10:42:22 -0500
Branch: REL_11_STABLE [d0e7f95b4] 2023-10-17 10:42:28 -0500
Author: Nathan Bossart <nathan@postgresql.org>
Branch: REL_14_STABLE [555bc89c9] 2023-10-17 16:11:03 -0500
Branch: REL_13_STABLE [ebc093fa6] 2023-10-17 16:11:08 -0500
Branch: REL_12_STABLE [0e32652a7] 2023-10-17 16:11:13 -0500
Branch: REL_11_STABLE [bc322c73c] 2023-10-17 16:11:18 -0500
-->
     <para>
      Avoid improper response to shutdown signals in child processes
      just forked by <function>system()</function> (Nathan Bossart)
      <ulink url="&commit_baseurl;ac1dfc303">&sect;</ulink>
      <ulink url="&commit_baseurl;ebc093fa6">&sect;</ulink>
     </para>

     <para>
      This fix avoids a race condition in which a child process that has
      been forked off by <function>system()</function>, but hasn't yet
      exec'd the intended child program, might receive and act on a signal
      intended for the parent server process.  That would lead to
      duplicate cleanup actions being performed, which will not end well.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [63a582222] 2023-10-16 17:33:08 +1300
Branch: REL_16_STABLE [5725e4ebe] 2023-10-16 17:21:41 +1300
Branch: REL_15_STABLE [5e39884d3] 2023-10-16 17:23:02 +1300
Branch: REL_14_STABLE [dc75748a9] 2023-10-16 17:23:25 +1300
Branch: REL_13_STABLE [67060be3d] 2023-10-16 17:24:35 +1300
Branch: REL_12_STABLE [43c979086] 2023-10-16 17:25:43 +1300
-->
     <para>
      Cope with torn reads of <filename>pg_control</filename> in frontend
      programs (Thomas Munro)
      <ulink url="&commit_baseurl;67060be3d">&sect;</ulink>
     </para>

     <para>
      On some file systems, reading <filename>pg_control</filename> may
      not be an atomic action when the server concurrently writes that
      file.  This is detectable via a bad CRC.  Retry a few times to see
      if the file becomes valid before we report error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [c558e6fd9] 2023-10-16 10:43:47 +1300
Branch: REL_16_STABLE [2371432cd] 2023-10-16 10:45:05 +1300
Branch: REL_15_STABLE [606be8a35] 2023-10-16 10:45:18 +1300
Branch: REL_14_STABLE [a56fe5cf0] 2023-10-16 10:47:01 +1300
Branch: REL_13_STABLE [ae9da357b] 2023-10-16 10:47:10 +1300
Branch: REL_12_STABLE [637e86ecc] 2023-10-16 10:47:33 +1300
Branch: REL_11_STABLE [f1634c968] 2023-10-16 10:52:40 +1300
-->
     <para>
      Avoid torn reads of <filename>pg_control</filename> in relevant SQL
      functions (Thomas Munro)
      <ulink url="&commit_baseurl;ae9da357b">&sect;</ulink>
     </para>

     <para>
      Acquire the appropriate lock before
      reading <filename>pg_control</filename>, to ensure we get a
      consistent view of that file.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [a956bd3fa] 2023-10-03 15:37:00 +0900
Branch: REL_16_STABLE [75f31a3f2] 2023-10-03 15:37:18 +0900
Branch: REL_15_STABLE [95e91da66] 2023-10-03 15:37:19 +0900
Branch: REL_14_STABLE [f91c87b31] 2023-10-03 15:37:21 +0900
Branch: REL_13_STABLE [a0b013625] 2023-10-03 15:37:23 +0900
Branch: REL_12_STABLE [9b3900cdb] 2023-10-03 15:37:24 +0900
-->
     <para>
      Avoid integer overflow when computing size of backend activity
      string array (Jakub Wartak)
      <ulink url="&commit_baseurl;a0b013625">&sect;</ulink>
     </para>

     <para>
      On 64-bit machines we will allow values
      of <varname>track_activity_query_size</varname> large enough to
      cause 32-bit overflow when multiplied by the allowed number of
      connections.  The code actually allocating the per-backend local
      array was careless about this though, and allocated the array
      incorrectly.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [c181f2e2b] 2023-09-30 17:03:50 +0300
Branch: REL_16_STABLE [992d2ca81] 2023-09-30 17:07:24 +0300
Branch: REL_15_STABLE [5ae245664] 2023-09-30 17:07:32 +0300
Branch: REL_14_STABLE [2d4f99bc6] 2023-09-30 17:07:37 +0300
Branch: REL_13_STABLE [ed9247cd7] 2023-09-30 17:07:41 +0300
-->
     <para>
      Fix briefly showing inconsistent progress statistics
      for <command>ANALYZE</command> on inherited tables
      (Heikki Linnakangas)
      <ulink url="&commit_baseurl;ed9247cd7">&sect;</ulink>
     </para>

     <para>
      The block-level counters should be reset to zero at the same time we
      update the current-relation field.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [dc8d72c1c] 2023-09-25 14:42:17 -0400
Branch: REL_16_STABLE [055f786ea] 2023-09-25 14:42:17 -0400
Branch: REL_15_STABLE [0e59266a5] 2023-09-25 14:41:57 -0400
Branch: REL_14_STABLE [5cff431bc] 2023-09-25 14:41:57 -0400
Branch: REL_13_STABLE [8cfc3e80b] 2023-09-25 14:41:57 -0400
Branch: REL_12_STABLE [4435a8d5d] 2023-09-25 14:41:57 -0400
Branch: REL_11_STABLE [fdc7cf73b] 2023-09-25 14:41:57 -0400
-->
     <para>
      Track the dependencies of cached <command>CALL</command> statements,
      and re-plan them when needed (Tom Lane)
      <ulink url="&commit_baseurl;8cfc3e80b">&sect;</ulink>
     </para>

     <para>
      DDL commands, such as replacement of a function that has been
      inlined into a <command>CALL</command> argument, can create the need
      to re-plan a <command>CALL</command> that has been cached by
      PL/pgSQL.  That was not happening, leading to misbehavior or strange
      errors such as <quote>cache lookup failed</quote>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [e0e492e5a] 2023-09-15 17:01:52 -0400
Branch: REL_16_STABLE [53630f12d] 2023-09-15 17:01:26 -0400
Branch: REL_15_STABLE [2679a107a] 2023-09-15 17:01:26 -0400
Branch: REL_14_STABLE [ae13f8166] 2023-09-15 17:01:26 -0400
Branch: REL_13_STABLE [c5b7f791d] 2023-09-15 17:01:26 -0400
Branch: REL_12_STABLE [d29812c0c] 2023-09-15 17:01:26 -0400
Branch: REL_11_STABLE [a374f6c61] 2023-09-15 17:01:26 -0400
-->
     <para>
      Track nesting depth correctly when
      inspecting <type>RECORD</type>-type Vars from outer query levels
      (Richard Guo)
      <ulink url="&commit_baseurl;c5b7f791d">&sect;</ulink>
     </para>

     <para>
      This oversight could lead to assertion failures, core dumps,
      or <quote>bogus varno</quote> errors.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL_13_STABLE [59bc0dfe4] 2023-09-15 16:39:27 -0400
Branch: REL_12_STABLE [8a15b4178] 2023-09-15 16:39:27 -0400
Branch: REL_11_STABLE [479b99125] 2023-09-15 16:39:27 -0400
-->
     <para>
      Avoid <quote>record type has not been registered</quote> failure
      when deparsing a view that contains references to fields of
      composite constants (Tom Lane)
      <ulink url="&commit_baseurl;59bc0dfe4">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [3acd0599b] 2023-09-13 14:58:22 +1200
Branch: REL_16_STABLE [f899c7f1e] 2023-09-13 15:06:07 +1200
Branch: REL_15_STABLE [a26cc0334] 2023-09-13 14:43:04 +1200
Branch: REL_14_STABLE [e2452c2a6] 2023-09-13 14:46:16 +1200
Branch: REL_13_STABLE [189097db8] 2023-09-13 14:48:00 +1200
Branch: REL_12_STABLE [012b80ad2] 2023-09-13 14:50:14 +1200
Branch: REL_11_STABLE [6ae57f190] 2023-09-13 14:52:34 +1200
-->
     <para>
      Fix error-handling bug in <type>RECORD</type> type cache management
      (Thomas Munro)
      <ulink url="&commit_baseurl;189097db8">&sect;</ulink>
     </para>

     <para>
      An out-of-memory error occurring at just the wrong point could leave
      behind inconsistent state that would lead to an infinite loop.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: REL_15_STABLE [c7256e656] 2023-09-12 10:23:17 +0530
Branch: REL_14_STABLE [f7d25117b] 2023-09-12 10:12:51 +0530
Branch: REL_13_STABLE [c570bb4d6] 2023-09-12 09:58:50 +0530
Branch: REL_12_STABLE [7e57208ed] 2023-09-12 09:44:37 +0530
Branch: REL_11_STABLE [feb4e218e] 2023-09-12 09:36:56 +0530
-->
     <para>
      Fix assertion failure when logical decoding is retried in the same
      session after an error (Hou Zhijie)
      <ulink url="&commit_baseurl;c570bb4d6">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [6b18b3fe2] 2023-10-03 10:21:44 +0900
Branch: REL_16_STABLE [a06efbc3a] 2023-10-03 10:25:12 +0900
Branch: REL_15_STABLE [afc79591d] 2023-10-03 10:25:14 +0900
Branch: REL_14_STABLE [baeb8542c] 2023-10-03 10:25:15 +0900
Branch: REL_13_STABLE [6103d2cca] 2023-10-03 10:25:17 +0900
Branch: REL_12_STABLE [22b2e6e9d] 2023-10-03 10:25:19 +0900
-->
     <para>
      Treat out-of-memory failures as fatal while reading WAL
      (Michael Paquier)
      <ulink url="&commit_baseurl;6103d2cca">&sect;</ulink>
     </para>

     <para>
      Previously this would be treated as a bogus-data condition, leading
      to the conclusion that we'd reached the end of WAL, which is
      incorrect and could lead to inconsistent WAL replay.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [bae868caf] 2023-09-23 10:26:24 +1200
Branch: REL_16_STABLE [ce497f648] 2023-09-23 10:27:02 +1200
Branch: REL_15_STABLE [f4d152edd] 2023-09-23 10:28:12 +1200
Branch: REL_14_STABLE [3ce3b53d7] 2023-09-23 10:28:40 +1200
Branch: REL_13_STABLE [6606c5716] 2023-09-23 10:29:44 +1200
Branch: REL_12_STABLE [e8f3c0687] 2023-09-23 10:29:56 +1200
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [becfbdd6c] 2023-09-26 10:53:38 +1300
Branch: REL_16_STABLE [10d0591ea] 2023-09-26 10:53:52 +1300
Branch: REL_15_STABLE [99d334a18] 2023-09-26 10:54:02 +1300
Branch: REL_14_STABLE [3d413c5a7] 2023-09-26 10:54:24 +1300
Branch: REL_13_STABLE [45d1fe8b5] 2023-09-26 10:54:47 +1300
Branch: REL_12_STABLE [bde2f1847] 2023-09-26 10:59:49 +1300
-->
     <para>
      Fix possible recovery failure due to trying to allocate memory based
      on a bogus WAL record length field (Thomas Munro, Michael Paquier)
      <ulink url="&commit_baseurl;6606c5716">&sect;</ulink>
      <ulink url="&commit_baseurl;45d1fe8b5">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: REL_14_STABLE [2f13e8d9e] 2023-09-12 09:35:42 +0900
Branch: REL_13_STABLE [5dc093eac] 2023-09-12 09:35:51 +0900
Branch: REL_12_STABLE [7b03d3a3b] 2023-09-12 09:35:57 +0900
-->
     <para>
      Ensure that standby-mode WAL recovery reports an error when an
      invalid page header is found (Yugo Nagata, Kyotaro Horiguchi)
      <ulink url="&commit_baseurl;5dc093eac">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [52c6c0f19] 2023-08-30 08:03:42 +0900
Branch: REL_16_STABLE Release: REL_16_0 [1d2939b6d] 2023-08-30 08:03:48 +0900
Branch: REL_15_STABLE [5180160c1] 2023-08-30 08:03:51 +0900
Branch: REL_14_STABLE [d2bd4ba30] 2023-08-30 08:03:52 +0900
Branch: REL_13_STABLE [420c8dc7e] 2023-08-30 08:03:54 +0900
-->
     <para>
      Fix datatype size confusion in logical tape management
      (Ranier Vilela)
      <ulink url="&commit_baseurl;420c8dc7e">&sect;</ulink>
     </para>

     <para>
      Integer overflow was possible on platforms where long is wider than
      int, although it would take a multiple-terabyte temporary file to
      cause a problem.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [5fec3c870] 2023-08-29 09:09:40 +0300
Branch: REL_16_STABLE Release: REL_16_0 [5f38ff3d0] 2023-08-29 09:10:28 +0300
Branch: REL_15_STABLE [0c1024060] 2023-08-29 09:12:35 +0300
Branch: REL_14_STABLE [3d895f95a] 2023-08-29 09:12:24 +0300
Branch: REL_13_STABLE [a01e479e8] 2023-08-29 09:12:17 +0300
-->
     <para>
      Avoid unintended close of syslogger process's stdin
      (Heikki Linnakangas)
      <ulink url="&commit_baseurl;a01e479e8">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d8b2fcc9d] 2023-08-24 12:02:46 -0400
Branch: REL_16_STABLE Release: REL_16_0 [ba0d737ca] 2023-08-24 12:02:40 -0400
Branch: REL_15_STABLE [870085135] 2023-08-24 12:02:40 -0400
Branch: REL_14_STABLE [9b2a41db1] 2023-08-24 12:02:40 -0400
Branch: REL_13_STABLE [27566bcf3] 2023-08-24 12:02:40 -0400
Branch: REL_12_STABLE [b808dbf90] 2023-08-24 12:02:40 -0400
Branch: REL_11_STABLE [9c59f3862] 2023-08-24 12:02:40 -0400
-->
     <para>
      Avoid doing plan cache revalidation of utility statements
      that do not receive interesting processing during parse analysis
      (Tom Lane)
      <ulink url="&commit_baseurl;27566bcf3">&sect;</ulink>
     </para>

     <para>
      Aside from saving a few cycles, this prevents failure after a cache
      invalidation for statements that must not set a snapshot, such
      as <command>SET TRANSACTION ISOLATION LEVEL</command>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master [a68458108] 2023-08-22 15:17:05 -0400
Branch: REL_16_STABLE Release: REL_16_0 [f938acd68] 2023-08-22 15:18:19 -0400
Branch: REL_15_STABLE [75f323aa1] 2023-08-22 15:16:01 -0400
Branch: REL_14_STABLE [7f4515a58] 2023-08-22 15:15:45 -0400
Branch: REL_13_STABLE [1bb619d4d] 2023-08-22 15:15:31 -0400
Branch: REL_12_STABLE [01993ac74] 2023-08-22 15:15:18 -0400
Branch: REL_11_STABLE [2d13dab04] 2023-08-23 17:22:16 -0400
Branch: REL_11_STABLE [b915bf495] 2023-08-24 16:14:26 -0400
-->
     <para>
      Keep by-reference <structfield>attmissingval</structfield> values in
      a long-lived context while they are being used (Andrew Dunstan)
      <ulink url="&commit_baseurl;1bb619d4d">&sect;</ulink>
     </para>

     <para>
      This avoids possible use of dangling pointers when a tuple slot
      outlives the tuple descriptor with which its value was constructed.
     </para>
    </listitem>

    <listitem>
<!--
Author: Jeff Davis <jdavis@postgresql.org>
Branch: master [fa2e87494] 2023-08-09 13:09:25 -0700
Branch: REL_16_STABLE Release: REL_16_0 [0d56c32c8] 2023-08-09 13:09:01 -0700
Branch: REL_15_STABLE [9f3343e40] 2023-08-07 15:12:49 -0700
Branch: REL_14_STABLE [00953f1e2] 2023-08-07 15:12:33 -0700
Branch: REL_13_STABLE [90cadfd49] 2023-08-07 15:12:09 -0700
Branch: REL_12_STABLE [a86d40227] 2023-08-07 15:11:18 -0700
Branch: REL_11_STABLE [43ba5105a] 2023-08-07 15:09:11 -0700
Branch: master [bee263b08] 2023-08-10 10:20:54 -0700
Branch: REL_16_STABLE Release: REL_16_0 [7bed93a46] 2023-08-10 10:24:58 -0700
Branch: REL_15_STABLE [1bc19dfcf] 2023-08-10 10:25:47 -0700
Branch: REL_14_STABLE [5a32af3f2] 2023-08-10 10:26:12 -0700
Branch: REL_13_STABLE [4caa9e33e] 2023-08-10 10:26:46 -0700
Branch: REL_12_STABLE [01bc42634] 2023-08-10 10:27:00 -0700
Branch: REL_11_STABLE [ae1269295] 2023-08-10 10:27:24 -0700
-->
     <para>
      Recalculate the effective value of <varname>search_path</varname>
      after <command>ALTER ROLE</command> (Jeff Davis)
      <ulink url="&commit_baseurl;90cadfd49">&sect;</ulink>
      <ulink url="&commit_baseurl;4caa9e33e">&sect;</ulink>
     </para>

     <para>
      This ensures that after renaming a role, the meaning of the special
      string <literal>$user</literal> is re-determined.
     </para>
    </listitem>

    <listitem>
<!--
Author: Jeff Davis <jdavis@postgresql.org>
Branch: master [ef74c7197] 2023-10-10 11:01:13 -0700
Branch: REL_16_STABLE [b8963e8a2] 2023-10-10 11:01:55 -0700
Branch: REL_15_STABLE [b9bb02620] 2023-10-10 11:02:45 -0700
Branch: REL_14_STABLE [6615bb95a] 2023-10-10 11:02:56 -0700
Branch: REL_13_STABLE [469d367be] 2023-10-10 11:03:03 -0700
Branch: REL_12_STABLE [6dbd01b9f] 2023-10-10 11:03:10 -0700
Branch: REL_11_STABLE [04f0baa85] 2023-10-10 11:03:20 -0700
-->
     <para>
      Fix order of operations in <function>GenericXLogFinish</function>
      (Jeff Davis)
      <ulink url="&commit_baseurl;469d367be">&sect;</ulink>
     </para>

     <para>
      This code violated the conditions required for crash safety by
      writing WAL before marking changed buffers dirty.  No core code uses
      this function, but extensions do (<filename>contrib/bloom</filename>
      does, for example).
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [af5b3c3d1] 2023-09-19 08:31:06 +0900
Branch: REL_16_STABLE [f171430f0] 2023-09-19 08:31:22 +0900
Branch: REL_15_STABLE [9e0ce80f3] 2023-09-19 08:31:24 +0900
Branch: REL_14_STABLE [bb65f3c1b] 2023-09-19 08:31:26 +0900
Branch: REL_13_STABLE [35e8ba3e5] 2023-09-19 08:31:27 +0900
Branch: REL_12_STABLE [99d27e55c] 2023-09-19 08:31:29 +0900
Branch: REL_11_STABLE [ddded779a] 2023-09-19 08:31:31 +0900
-->
     <para>
      Remove incorrect assertion in PL/Python exception handling
      (Alexander Lakhin)
      <ulink url="&commit_baseurl;35e8ba3e5">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [06c0c3688] 2023-10-02 13:27:58 -0400
Branch: REL_16_STABLE [aaaf8fbb6] 2023-10-02 13:27:51 -0400
Branch: REL_15_STABLE [10e705bd2] 2023-10-02 13:27:51 -0400
Branch: REL_14_STABLE [829d91cc6] 2023-10-02 13:27:51 -0400
Branch: REL_13_STABLE [295953f8b] 2023-10-02 13:27:51 -0400
Branch: REL_12_STABLE [c02f29758] 2023-10-02 13:27:51 -0400
Branch: REL_11_STABLE [4f16152d9] 2023-10-02 13:27:51 -0400
-->
     <para>
      Fix <application>pg_restore</application> so that selective restores
      will include both table-level and column-level ACLs for selected
      tables (Euler Taveira, Tom Lane)
      <ulink url="&commit_baseurl;295953f8b">&sect;</ulink>
     </para>

     <para>
      Formerly, only the table-level ACL would get restored if both types
      were present.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [2e3dc8c14] 2023-09-25 14:27:33 +0200
Branch: REL_16_STABLE [fb9ddd0fa] 2023-09-25 14:34:06 +0200
Branch: REL_15_STABLE [8845d8597] 2023-09-25 14:34:06 +0200
Branch: REL_14_STABLE [26c291a15] 2023-09-25 14:34:06 +0200
Branch: REL_13_STABLE [d3946c4f6] 2023-09-25 14:34:05 +0200
Branch: REL_12_STABLE [af9f6cd1d] 2023-09-25 14:34:05 +0200
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: REL_15_STABLE [04d2d605f] 2023-11-03 12:07:11 -0400
Branch: REL_14_STABLE [f9280e77e] 2023-11-03 12:07:25 -0400
Branch: REL_13_STABLE [2f1f49975] 2023-11-03 12:07:35 -0400
Branch: REL_12_STABLE [d3246a2ad] 2023-11-03 12:07:40 -0400
-->
     <para>
      Add logic to <application>pg_upgrade</application> to check for use
      of <type>abstime</type>, <type>reltime</type>,
      and <type>tinterval</type> data types (&Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;d3946c4f6">&sect;</ulink>
      <ulink url="&commit_baseurl;2f1f49975">&sect;</ulink>
     </para>

     <para>
      These obsolete data types were removed
      in <productname>PostgreSQL</productname> version 12, so check to
      make sure they aren't present in an older database before claiming
      it can be upgraded.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [e1c6db630] 2023-09-07 14:12:18 +0900
Branch: REL_16_STABLE Release: REL_16_0 [105795843] 2023-09-07 14:12:25 +0900
Branch: REL_15_STABLE [574bff7bd] 2023-09-07 14:12:29 +0900
Branch: REL_14_STABLE [9de74ca70] 2023-09-07 14:12:31 +0900
Branch: REL_13_STABLE [6cdd7b805] 2023-09-07 14:12:33 +0900
Branch: REL_12_STABLE [2fe968ce9] 2023-09-07 14:12:34 +0900
Branch: REL_11_STABLE [dbd1a06c9] 2023-09-07 14:12:36 +0900
-->
     <para>
      Avoid generating invalid temporary slot names
      in <application>pg_basebackup</application> (Jelte Fennema)
      <ulink url="&commit_baseurl;6cdd7b805">&sect;</ulink>
     </para>

     <para>
      This has only been seen to occur when the server connection runs
      through <application>pgbouncer</application>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [90ebcc32d] 2023-10-14 15:54:46 -0700
Branch: REL_16_STABLE [06ff06484] 2023-10-14 15:54:49 -0700
Branch: REL_15_STABLE [1102f4ece] 2023-10-14 15:54:49 -0700
Branch: REL_14_STABLE [0df88a686] 2023-10-14 15:54:49 -0700
Branch: REL_13_STABLE [3895e9153] 2023-10-14 15:54:50 -0700
Branch: REL_12_STABLE [73cda80a3] 2023-10-14 15:54:50 -0700
-->
     <para>
      Avoid false <quote>too many client connections</quote> errors
      in <application>pgbench</application> on Windows (Noah Misch)
      <ulink url="&commit_baseurl;3895e9153">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [6ec9e9975] 2023-10-30 14:46:05 -0700
Branch: REL_16_STABLE [3c6a05b80] 2023-10-30 14:46:08 -0700
Branch: REL_15_STABLE [6f81386a9] 2023-10-30 14:46:08 -0700
Branch: REL_14_STABLE [42496cba6] 2023-10-30 14:46:09 -0700
Branch: REL_13_STABLE [f31ccb575] 2023-10-30 14:46:09 -0700
Branch: REL_12_STABLE [3a205c916] 2023-10-30 14:46:09 -0700
Branch: REL_11_STABLE [e04509f32] 2023-10-30 14:46:09 -0700
-->
     <para>
      In <filename>contrib/amcheck</filename>, do not report interrupted
      page deletion as corruption (Noah Misch)
      <ulink url="&commit_baseurl;f31ccb575">&sect;</ulink>
     </para>

     <para>
      This fix prevents false-positive reports of <quote>the first child
      of leftmost target page is not leftmost of its
      level</quote>, <quote>block NNNN is not leftmost</quote>
      or <quote>left link/right link pair in index XXXX not in
      agreement</quote>.  They appeared
      if <application>amcheck</application> ran after an unfinished btree
      index page deletion and before <command>VACUUM</command> had cleaned
      things up.
     </para>
    </listitem>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [849172ff4] 2023-10-29 11:14:37 +0000
Branch: REL_16_STABLE [ab73a37e9] 2023-10-29 11:14:36 +0000
Branch: REL_15_STABLE [5f0691839] 2023-10-29 11:14:35 +0000
Branch: REL_14_STABLE [162b38a06] 2023-10-29 11:14:34 +0000
Branch: REL_13_STABLE [35e6a5c20] 2023-10-29 11:14:34 +0000
Branch: REL_12_STABLE [f7cd7b265] 2023-10-29 11:14:33 +0000
Branch: REL_11_STABLE [c804ffb56] 2023-10-29 11:14:32 +0000
-->
     <para>
      Fix failure of <filename>contrib/btree_gin</filename> indexes
      on <type>interval</type> columns,
      when an indexscan using the <literal>&lt;</literal>
      or <literal>&lt;=</literal> operator is performed (Dean Rasheed)
      <ulink url="&commit_baseurl;35e6a5c20">&sect;</ulink>
     </para>

     <para>
      Such an indexscan failed to return all the entries it should.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [76200e5ee] 2023-10-19 05:13:23 +1300
Branch: REL_16_STABLE [774185056] 2023-10-19 05:14:07 +1300
Branch: REL_15_STABLE [b60e3ac76] 2023-10-19 05:15:38 +1300
Branch: REL_14_STABLE [0a8b7d5c1] 2023-10-19 05:16:00 +1300
Branch: REL_13_STABLE [53c4dabe1] 2023-10-19 05:16:24 +1300
Branch: REL_12_STABLE [7da915e33] 2023-10-19 05:17:27 +1300
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [37d5babb5] 2023-10-18 22:47:23 +1300
Branch: REL_16_STABLE [74d19ec09] 2023-10-18 22:53:56 +1300
Branch: REL_15_STABLE [eed1feb3f] 2023-10-18 22:59:46 +1300
Branch: REL_14_STABLE [82d9a782a] 2023-10-18 23:04:09 +1300
Branch: REL_13_STABLE [f28956b23] 2023-10-18 23:16:48 +1300
Branch: REL_12_STABLE [15ddc9725] 2023-10-18 23:18:16 +1300
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [f90b4a846] 2023-10-19 03:01:55 +1300
Branch: REL_16_STABLE [60596f148] 2023-10-19 03:07:18 +1300
Branch: REL_15_STABLE [b2e097788] 2023-10-19 03:03:27 +1300
Branch: REL_14_STABLE [ee3e4c41f] 2023-10-19 03:03:46 +1300
Branch: REL_13_STABLE [981292c19] 2023-10-19 03:04:00 +1300
Branch: REL_12_STABLE [d701f0d1f] 2023-10-19 03:04:09 +1300
Author: Thomas Munro <tmunro@postgresql.org>
Branch: REL_13_STABLE [7c070e224] 2023-10-24 11:23:08 +1300
Branch: REL_12_STABLE [9ad986276] 2023-10-24 11:23:21 +1300
-->
     <para>
      Add support for LLVM 16 and 17 (Thomas Munro, Dmitry Dolgov)
      <ulink url="&commit_baseurl;53c4dabe1">&sect;</ulink>
      <ulink url="&commit_baseurl;f28956b23">&sect;</ulink>
      <ulink url="&commit_baseurl;981292c19">&sect;</ulink>
      <ulink url="&commit_baseurl;7c070e224">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [06843df4a] 2023-09-29 14:07:30 -0400
Branch: REL_16_STABLE [75c562653] 2023-09-29 14:07:30 -0400
Branch: REL_15_STABLE [be3398ea1] 2023-09-29 14:07:30 -0400
Branch: REL_14_STABLE [e9d1560d3] 2023-09-29 14:07:30 -0400
Branch: REL_13_STABLE [1b64e374c] 2023-09-29 14:07:30 -0400
Branch: REL_12_STABLE [d8ceb98e4] 2023-09-29 14:07:30 -0400
Branch: REL_11_STABLE [4d10fda52] 2023-09-29 14:07:30 -0400
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [3aa021b29] 2023-09-26 21:06:21 -0400
Branch: REL_16_STABLE [e73d6a0df] 2023-09-26 21:06:21 -0400
Branch: REL_15_STABLE [78f17fb97] 2023-09-26 21:06:21 -0400
Branch: REL_14_STABLE [5d60e8ed3] 2023-09-26 21:06:21 -0400
Branch: REL_13_STABLE [53cc19bfa] 2023-09-26 21:06:21 -0400
Branch: REL_12_STABLE [abe423712] 2023-09-26 21:06:21 -0400
Branch: REL_11_STABLE [0e0de20c8] 2023-09-26 21:06:21 -0400
-->
     <para>
      Suppress assorted build-time warnings on
      recent <productname>macOS</productname> (Tom Lane)
      <ulink url="&commit_baseurl;1b64e374c">&sect;</ulink>
      <ulink url="&commit_baseurl;53cc19bfa">&sect;</ulink>
     </para>

     <para>
      <productname>Xcode 15</productname> (released
      with <productname>macOS Sonoma</productname>) changed the linker's
      behavior in a way that causes many duplicate-library warnings while
      building <productname>PostgreSQL</productname>.  These were
      harmless, but they're annoying so avoid citing the same libraries
      twice.  Also remove use of the <option>-multiply_defined
      suppress</option> linker switch, which apparently has been a no-op
      for a long time, and is now actively complained of.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [6fc3a138b] 2023-09-27 14:40:23 +0900
Branch: REL_16_STABLE [641db601b] 2023-09-27 14:41:15 +0900
Branch: REL_15_STABLE [8a9e4e84e] 2023-09-27 14:41:21 +0900
Branch: REL_14_STABLE [e4d7ad30f] 2023-09-27 14:41:23 +0900
Branch: REL_13_STABLE [a64b8b035] 2023-09-27 14:41:26 +0900
-->
     <para>
      When building <filename>contrib/unaccent</filename>'s rules file,
      fall back to using <literal>python</literal>
      if <literal>--with-python</literal> was not given and make
      variable <literal>PYTHON</literal> was not set (Japin Li)
      <ulink url="&commit_baseurl;a64b8b035">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [5fd3e06f6] 2023-10-28 11:54:40 -0400
Branch: REL_16_STABLE [d1537afe3] 2023-10-28 11:54:51 -0400
Branch: REL_15_STABLE [85b98a70b] 2023-10-28 11:54:59 -0400
Branch: REL_14_STABLE [877e7b4b9] 2023-10-28 11:55:06 -0400
Branch: REL_13_STABLE [d94612873] 2023-10-28 11:55:14 -0400
Branch: REL_12_STABLE [7180bb827] 2023-10-28 11:55:22 -0400
Branch: REL_11_STABLE [64fc5e005] 2023-10-28 11:55:30 -0400
-->
     <para>
      Remove <literal>PHOT</literal> (Phoenix Islands Time) from the
      default timezone abbreviations list (Tom Lane)
      <ulink url="&commit_baseurl;d94612873">&sect;</ulink>
     </para>

     <para>
      Presence of this abbreviation in the default list can cause failures
      on recent Debian and Ubuntu releases, as they no longer install the
      underlying tzdb entry by default.  Since this is a made-up
      abbreviation for a zone with a total human population of about two
      dozen, it seems unlikely that anyone will miss it.  If someone does,
      they can put it back via a custom abbreviations file.
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-12">
  <title>Release 13.12</title>

  <formalpara>
  <title>Release date:</title>
  <para>2023-08-10</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.11.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.12</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you use BRIN indexes, it may be advisable to reindex them;
    see the second changelog entry below.
   </para>

   <para>
    Also, if you are upgrading from a version earlier than 13.7,
    see <xref linkend="release-13-7"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [cd5f2a357] 2023-08-07 06:05:56 -0700
Branch: REL_16_STABLE [f53511010] 2023-08-07 06:05:59 -0700
Branch: REL_15_STABLE [de494ec14] 2023-08-07 06:06:00 -0700
Branch: REL_14_STABLE [d4648a74b] 2023-08-07 06:06:00 -0700
Branch: REL_13_STABLE [b1b585e0f] 2023-08-07 06:06:00 -0700
Branch: REL_12_STABLE [eb044d8f0] 2023-08-07 06:06:00 -0700
Branch: REL_11_STABLE [919ebb023] 2023-08-07 06:06:01 -0700
-->
     <para>
      Disallow substituting a schema or owner name into an extension script
      if the name contains a quote, backslash, or dollar sign (Noah Misch)
      <ulink url="&commit_baseurl;b1b585e0f">&sect;</ulink>
     </para>

     <para>
      This restriction guards against SQL-injection hazards for trusted
      extensions.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks Micah Gates,
      Valerie Woolard, Tim Carey-Smith, and Christoph Berg for reporting
      this problem.
      (CVE-2023-39417)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master Release: REL_16_BR [3581cbdcd] 2023-05-19 01:29:44 +0200
Branch: REL_15_STABLE [e18769323] 2023-05-19 00:15:13 +0200
Branch: REL_14_STABLE [40d465caf] 2023-05-19 00:15:00 +0200
Branch: REL_13_STABLE [6c512fc6e] 2023-05-19 00:14:05 +0200
Branch: REL_12_STABLE [d78a66d92] 2023-05-19 00:16:13 +0200
Branch: REL_11_STABLE [fc7dc728d] 2023-05-19 00:21:05 +0200
Branch: master Release: REL_16_BR [3ec8a3bfb] 2023-05-18 23:33:23 +0200
Branch: REL_15_STABLE [80f64b900] 2023-05-18 23:33:45 +0200
Branch: REL_14_STABLE [3f1356e5d] 2023-05-18 23:34:10 +0200
Branch: REL_13_STABLE [2b1ab28b9] 2023-05-18 23:34:35 +0200
Branch: REL_12_STABLE [d42ffda68] 2023-05-18 23:34:56 +0200
Branch: REL_11_STABLE [b511d7323] 2023-05-18 23:35:16 +0200
-->
     <para>
      Fix confusion between empty (no rows) ranges and all-NULL ranges in
      BRIN indexes, as well as incorrect merging of all-NULL summaries
      (Tomas Vondra)
      <ulink url="&commit_baseurl;6c512fc6e">&sect;</ulink>
      <ulink url="&commit_baseurl;2b1ab28b9">&sect;</ulink>
     </para>

     <para>
      Each of these oversights could result in forgetting that a BRIN
      index range contains any NULL values, potentially allowing
      subsequent queries that should return NULL values to miss doing so.
     </para>

     <para>
      This fix will not in itself correct faulty BRIN entries.
      It's recommended to <command>REINDEX</command> any BRIN indexes that
      may be used to search for nulls.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [c66a7d75e] 2023-07-13 13:03:28 -0700
Branch: REL_16_STABLE [a4b4cc1d6] 2023-07-13 13:03:30 -0700
Branch: REL_15_STABLE [f66403749] 2023-07-13 13:04:45 -0700
Branch: REL_14_STABLE [d11efe830] 2023-07-13 13:03:33 -0700
Branch: REL_13_STABLE [81ce00006] 2023-07-13 13:03:34 -0700
Branch: REL_12_STABLE [034a9fcd2] 2023-07-13 13:03:36 -0700
Branch: REL_11_STABLE [1c38e7ae1] 2023-07-13 13:03:37 -0700
-->
     <para>
      Avoid leaving a corrupted database behind when <command>DROP
      DATABASE</command> is interrupted (Andres Freund)
      <ulink url="&commit_baseurl;81ce00006">&sect;</ulink>
     </para>

     <para>
      If <command>DROP DATABASE</command> was interrupted after it had
      already begun taking irreversible steps, the target database
      remained accessible (because the removal of
      its <structname>pg_database</structname> row would roll back),
      but it would have corrupt contents.  Fix by marking the database
      as inaccessible before we begin to perform irreversible operations.
      A failure after that will leave the database still partially
      present, but nothing can be done with it except to issue
      another <command>DROP DATABASE</command>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [cfc43aeb3] 2023-06-30 13:54:48 +0900
Branch: REL_16_STABLE [f4691e2e7] 2023-06-30 13:54:53 +0900
Branch: REL_15_STABLE [cb4ac3e56] 2023-06-30 13:54:55 +0900
Branch: REL_14_STABLE [663b35f2d] 2023-06-30 13:54:56 +0900
Branch: REL_13_STABLE [537b70b82] 2023-06-30 13:54:59 +0900
Branch: REL_12_STABLE [dbe0e5c56] 2023-06-30 13:55:02 +0900
Branch: REL_11_STABLE [c75c33de5] 2023-06-30 13:55:07 +0900
-->
     <para>
      Ensure that partitioned indexes are correctly marked as valid or not
      at creation (Michael Paquier)
      <ulink url="&commit_baseurl;537b70b82">&sect;</ulink>
     </para>

     <para>
      If a new partitioned index matches an existing but invalid index on
      one of the partitions, the partitioned index could end up being
      marked valid prematurely.  This could lead to misbehavior or
      assertion failures in subsequent queries on the partitioned table.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master Release: REL_16_BR [fc55c7ff8] 2023-06-28 15:57:31 +0900
Branch: REL_15_STABLE [7aa17b498] 2023-06-28 15:57:43 +0900
Branch: REL_14_STABLE [6160e221d] 2023-06-28 15:57:48 +0900
Branch: REL_13_STABLE [f42844069] 2023-06-28 15:57:51 +0900
Branch: REL_12_STABLE [63b292e73] 2023-06-28 15:57:53 +0900
Branch: REL_11_STABLE [e90e9275f] 2023-06-28 15:57:55 +0900
-->
     <para>
      Ignore invalid child indexes when matching partitioned indexes to
      child indexes during <command>ALTER TABLE ATTACH PARTITION</command>
      (Michael Paquier)
      <ulink url="&commit_baseurl;f42844069">&sect;</ulink>
     </para>

     <para>
      Such an index will now be ignored, and a new child index created
      instead.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [38ea6aa90] 2023-07-14 10:12:48 +0900
Branch: REL_16_STABLE [31f9d41d6] 2023-07-14 10:13:14 +0900
Branch: REL_15_STABLE [c0dc97c7b] 2023-07-14 10:13:15 +0900
Branch: REL_14_STABLE [954cc2139] 2023-07-14 10:13:17 +0900
Branch: REL_13_STABLE [c89d74c18] 2023-07-14 10:13:20 +0900
Branch: REL_12_STABLE [f1d6bcdd8] 2023-07-14 10:13:21 +0900
Branch: REL_11_STABLE [ed2b58c15] 2023-07-14 10:13:22 +0900
-->
     <para>
      Fix possible failure when marking a partitioned index valid after
      all of its partitions have been attached (Michael Paquier)
      <ulink url="&commit_baseurl;c89d74c18">&sect;</ulink>
     </para>

     <para>
      The update of the index's <structname>pg_index</structname> entry
      could use stale data for other columns.  One reported symptom is
      an <quote>attempted to update invisible tuple</quote> error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [bd5ddbe86] 2023-07-10 09:40:07 +0900
Branch: REL_16_STABLE [55c95f24c] 2023-07-10 09:40:12 +0900
Branch: REL_15_STABLE [d1e0f408c] 2023-07-10 09:40:14 +0900
Branch: REL_14_STABLE [235e716bc] 2023-07-10 09:40:15 +0900
Branch: REL_13_STABLE [f5b075adc] 2023-07-10 09:40:17 +0900
Branch: REL_12_STABLE [02021f1b2] 2023-07-10 09:40:22 +0900
Branch: REL_11_STABLE [914e72e6e] 2023-07-10 09:40:24 +0900
-->
     <para>
      Fix <command>ALTER EXTENSION SET SCHEMA</command> to complain if the
      extension contains any objects outside the extension's schema
      (Michael Paquier, Heikki Linnakangas)
      <ulink url="&commit_baseurl;f5b075adc">&sect;</ulink>
     </para>

     <para>
      Erroring out if the extension contains objects in multiple schemas
      was always intended; but the check was mis-coded so that it would
      fail to detect some cases, leading to surprising behavior.
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master Release: REL_16_BR [7fcd7ef2a] 2023-06-19 13:00:42 +1200
Branch: REL_15_STABLE [8f2ec8cc7] 2023-06-19 13:01:29 +1200
Branch: REL_14_STABLE [73f1c17fc] 2023-06-19 13:01:58 +1200
Branch: REL_13_STABLE [06286f8a2] 2023-06-19 13:02:24 +1200
Branch: REL_12_STABLE [dcef5b052] 2023-06-19 13:02:52 +1200
Branch: REL_11_STABLE [f6345f03f] 2023-06-19 13:03:17 +1200
-->
     <para>
      Don't use partial unique indexes for uniqueness proofs in the
      planner (David Rowley)
      <ulink url="&commit_baseurl;06286f8a2">&sect;</ulink>
     </para>

     <para>
      This could give rise to incorrect plans, since the presumed
      uniqueness of rows read from a table might not hold if the index in
      question isn't used to scan the table.
     </para>
    </listitem>

    <listitem>
<!--
Author: Etsuro Fujita <efujita@postgresql.org>
Branch: master [6f80a8d9c] 2023-07-28 15:45:00 +0900
Branch: REL_16_STABLE [695f5deb7] 2023-07-28 15:45:01 +0900
Branch: REL_15_STABLE [d1ef5631e] 2023-07-28 15:45:02 +0900
Branch: REL_14_STABLE [b0e390e6d] 2023-07-28 15:45:04 +0900
Branch: REL_13_STABLE [730f983ef] 2023-07-28 15:45:06 +0900
Branch: REL_12_STABLE [9edf72aa7] 2023-07-28 15:45:08 +0900
Branch: REL_11_STABLE [db01f2696] 2023-07-28 15:45:09 +0900
-->
     <para>
      Avoid producing incorrect plans for foreign joins with
      pseudoconstant join clauses (Etsuro Fujita)
      <ulink url="&commit_baseurl;730f983ef">&sect;</ulink>
     </para>

     <para>
      The planner currently lacks support for attaching pseudoconstant
      join clauses to a pushed-down remote join, so disable generation
      of remote joins in such cases.  (A better solution will require
      ABI-breaking changes of planner data structures, so it will have to
      wait for a future major release.)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_16_BR [792213f2e] 2023-06-13 15:58:43 -0400
Branch: REL_15_STABLE [cc6974df1] 2023-06-13 15:58:37 -0400
Branch: REL_14_STABLE [d1423c52e] 2023-06-13 15:58:37 -0400
Branch: REL_13_STABLE [a36d0014f] 2023-06-13 15:58:37 -0400
Branch: REL_12_STABLE [b4110bdbf] 2023-06-13 15:58:37 -0400
Branch: REL_11_STABLE [13192a324] 2023-06-13 15:58:37 -0400
-->
     <para>
      Correctly handle sub-SELECTs in RLS policy expressions and
      security-barrier views when expanding rule actions (Tom Lane)
      <ulink url="&commit_baseurl;a36d0014f">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [126552c85] 2023-07-04 09:07:31 +1200
Branch: REL_16_STABLE [12529028a] 2023-07-04 09:04:35 +1200
Branch: REL_15_STABLE [d34aa0a2f] 2023-07-04 09:10:37 +1200
Branch: REL_14_STABLE [fb663f387] 2023-07-04 09:14:16 +1200
Branch: REL_13_STABLE [fc1547384] 2023-07-04 09:20:55 +1200
Branch: REL_12_STABLE [255a925d3] 2023-07-04 09:21:33 +1200
Branch: REL_11_STABLE [13f127800] 2023-07-04 09:40:30 +1200
Branch: master [bcc93a389] 2023-07-04 09:07:31 +1200
Branch: REL_16_STABLE [d03d9a261] 2023-07-04 09:04:35 +1200
Branch: REL_15_STABLE [ab265e985] 2023-07-04 09:10:37 +1200
Branch: REL_14_STABLE [3f7d3a77e] 2023-07-04 09:14:16 +1200
Branch: REL_13_STABLE [8976ac5c5] 2023-07-04 09:20:55 +1200
Branch: REL_12_STABLE [17b8887c2] 2023-07-04 09:21:33 +1200
Branch: REL_11_STABLE [814f3c8e4] 2023-07-04 09:40:30 +1200
Branch: master [f9b7fc651] 2023-07-04 09:07:31 +1200
Branch: REL_16_STABLE [0cb1fb2c9] 2023-07-04 09:04:35 +1200
Branch: REL_15_STABLE [0f275b0ee] 2023-07-04 09:10:37 +1200
Branch: REL_14_STABLE [ae6d536ed] 2023-07-04 09:14:16 +1200
Branch: REL_13_STABLE [8f705d7b9] 2023-07-04 09:20:55 +1200
Branch: REL_12_STABLE [fe88497b4] 2023-07-04 09:21:33 +1200
Branch: REL_11_STABLE [0048c3b51] 2023-07-04 09:27:00 +1200
-->
     <para>
      Fix race conditions in conflict detection
      for <literal>SERIALIZABLE</literal> isolation mode
      (Thomas Munro)
      <ulink url="&commit_baseurl;fc1547384">&sect;</ulink>
      <ulink url="&commit_baseurl;8976ac5c5">&sect;</ulink>
      <ulink url="&commit_baseurl;8f705d7b9">&sect;</ulink>
     </para>

     <para>
      Conflicts could be missed when using bitmap heap scans, when using
      GIN indexes, and when examining an initially-empty btree index.
      All these cases could lead to serializability failures due to
      improperly allowing conflicting transactions to commit.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_16_BR [45392626c] 2023-06-20 17:47:53 -0400
Branch: REL_15_STABLE [c2f974fff] 2023-06-20 17:47:53 -0400
Branch: REL_14_STABLE [d911dce14] 2023-06-20 17:47:36 -0400
Branch: REL_13_STABLE [2f97105e9] 2023-06-20 17:47:36 -0400
Branch: REL_12_STABLE [9529b1eb1] 2023-06-20 17:47:36 -0400
-->
     <para>
      Fix hash join with an inner-side hash key that contains Params
      coming from an outer nested loop (Tom Lane)
      <ulink url="&commit_baseurl;2f97105e9">&sect;</ulink>
     </para>

     <para>
      When rescanning the join after the values of such Params have
      changed, we must rebuild the hash table, but neglected to do so.
      This could result in missing join output rows.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_16_BR [43af714de] 2023-06-29 10:19:10 -0400
Branch: REL_15_STABLE [cc8cca3c2] 2023-06-29 10:19:10 -0400
Branch: REL_14_STABLE [0789b82a9] 2023-06-29 10:19:10 -0400
Branch: REL_13_STABLE [d0ab203bc] 2023-06-29 10:19:10 -0400
Branch: REL_12_STABLE [53b93e853] 2023-06-29 10:19:10 -0400
Branch: REL_11_STABLE [7f11b7a9c] 2023-06-29 10:19:10 -0400
-->
     <para>
      Fix intermittent failures when trying to update a field of a
      composite column (Tom Lane)
      <ulink url="&commit_baseurl;d0ab203bc">&sect;</ulink>
     </para>

     <para>
      If the overall value of the composite column is wide enough to
      require out-of-line toasting, then an unluckily-timed cache flush
      could cause errors or server crashes.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master Release: REL_16_BR [f24523672] 2023-06-07 18:54:34 +0200
Branch: REL_15_STABLE [ee87f8b63] 2023-06-07 18:52:21 +0200
Branch: REL_14_STABLE [7f528e96c] 2023-06-07 18:53:04 +0200
Branch: REL_13_STABLE [c504aa857] 2023-06-07 18:53:16 +0200
Branch: REL_12_STABLE [54e1b8587] 2023-06-07 18:53:30 +0200
Branch: master [ce5aaea8c] 2023-07-02 22:21:02 +0200
Branch: REL_16_STABLE [9cf85093b] 2023-07-02 22:22:31 +0200
Branch: REL_15_STABLE [7ae4e7868] 2023-07-02 22:22:50 +0200
Branch: REL_14_STABLE [260dbf19a] 2023-07-02 22:23:04 +0200
Branch: REL_13_STABLE [984c23f6f] 2023-07-02 22:23:20 +0200
-->
     <para>
      Prevent query-lifespan memory leaks in some <command>UPDATE</command>
      queries with triggers (Tomas Vondra)
      <ulink url="&commit_baseurl;c504aa857">&sect;</ulink>
      <ulink url="&commit_baseurl;984c23f6f">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [98640f960] 2023-07-02 20:03:30 +0200
Branch: REL_16_STABLE [9ae7b5d1f] 2023-07-02 20:04:16 +0200
Branch: REL_15_STABLE [0c5fe4ff6] 2023-07-02 20:04:40 +0200
Branch: REL_14_STABLE [c1affa38c] 2023-07-02 20:05:14 +0200
Branch: REL_13_STABLE [3ce761d5c] 2023-07-02 20:05:35 +0200
-->
     <para>
      Prevent query-lifespan memory leaks when an Incremental Sort plan
      node is rescanned (James Coleman, Laurenz Albe, Tom Lane)
      <ulink url="&commit_baseurl;3ce761d5c">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_16_BR [7398e2722] 2023-06-12 10:54:44 -0400
Branch: REL_15_STABLE [bd590d1fe] 2023-06-12 10:54:28 -0400
Branch: REL_14_STABLE [5eaa05f63] 2023-06-12 10:54:28 -0400
Branch: REL_13_STABLE [6f23b5f74] 2023-06-12 10:54:28 -0400
-->
     <para>
      Accept fractional seconds in the input to <type>jsonpath</type>'s
      <function>datetime()</function> method (Tom Lane)
      <ulink url="&commit_baseurl;6f23b5f74">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_16_BR [691594acd] 2023-06-24 17:18:08 -0400
Branch: REL_15_STABLE [a77d90171] 2023-06-24 17:18:08 -0400
Branch: REL_14_STABLE [4c61afa47] 2023-06-24 17:18:08 -0400
Branch: REL_13_STABLE [b6ab18a99] 2023-06-24 17:18:08 -0400
Branch: REL_12_STABLE [3b4580f5c] 2023-06-24 17:18:08 -0400
Branch: REL_11_STABLE [c7f33a197] 2023-06-24 17:18:08 -0400
-->
     <para>
      Prevent stack-overflow crashes with very complex text search
      patterns (Tom Lane)
      <ulink url="&commit_baseurl;b6ab18a99">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [38df84c65] 2023-07-27 11:56:35 -0400
Branch: REL_16_STABLE [de3f0e3fe] 2023-07-27 11:56:35 -0400
Branch: REL_15_STABLE [313ceda2f] 2023-07-27 12:07:48 -0400
Branch: REL_14_STABLE [341996248] 2023-07-27 12:07:48 -0400
Branch: REL_13_STABLE [288b4288c] 2023-07-27 12:07:48 -0400
Branch: REL_12_STABLE [0660f74e8] 2023-07-27 12:07:48 -0400
Branch: REL_11_STABLE [1d031ad54] 2023-07-27 12:07:48 -0400
-->
     <para>
      Allow tokens up to 10240 bytes long
      in <filename>pg_hba.conf</filename>
      and <filename>pg_ident.conf</filename> (Tom Lane)
      <ulink url="&commit_baseurl;288b4288c">&sect;</ulink>
     </para>

     <para>
      The previous limit of 256 bytes has been found insufficient for some
      use-cases.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [4f4d73466] 2023-07-05 13:13:13 +0300
Branch: REL_16_STABLE [dc0b58417] 2023-07-05 13:25:59 +0300
Branch: REL_15_STABLE [fa96a74a0] 2023-07-05 13:13:30 +0300
Branch: REL_14_STABLE [bfb493dba] 2023-07-05 13:13:35 +0300
Branch: REL_13_STABLE [59c2a6fe9] 2023-07-05 13:13:39 +0300
Branch: REL_12_STABLE [162aa47c3] 2023-07-05 13:14:24 +0300
Branch: REL_11_STABLE [2316ff1ae] 2023-07-05 13:14:33 +0300
-->
     <para>
      Fix mishandling of C++ out-of-memory conditions (Heikki Linnakangas)
      <ulink url="&commit_baseurl;59c2a6fe9">&sect;</ulink>
     </para>

     <para>
      If JIT is in use, running out of memory in a
      C++ <function>new</function> call would lead to
      a <productname>PostgreSQL</productname> FATAL error, instead of the
      expected C++ exception.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9089287aa] 2023-07-20 14:23:46 -0400
Branch: REL_16_STABLE [c0f531396] 2023-07-20 14:23:46 -0400
Branch: REL_15_STABLE [fbaf65cd6] 2023-07-20 14:23:46 -0400
Branch: REL_14_STABLE [10fd061bb] 2023-07-20 14:23:46 -0400
Branch: REL_13_STABLE [291c02540] 2023-07-20 14:23:46 -0400
-->
     <para>
      Fix rare null-pointer crash in <filename>plancache.c</filename>
      (Tom Lane)
      <ulink url="&commit_baseurl;291c02540">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [03f80daac] 2023-07-04 15:16:47 +1200
Branch: REL_16_STABLE [af8f9ec66] 2023-07-04 15:21:36 +1200
Branch: REL_15_STABLE [9ffb10f18] 2023-07-04 15:24:42 +1200
Branch: REL_14_STABLE [b7ec66731] 2023-07-04 15:26:42 +1200
Branch: REL_13_STABLE [a0003572f] 2023-07-04 15:28:29 +1200
Branch: REL_12_STABLE [74ad9b0d1] 2023-07-04 15:29:41 +1200
Branch: REL_11_STABLE [1605623ec] 2023-07-04 16:13:12 +1200
-->
     <para>
      Avoid losing track of possibly-useful shared memory segments when a
      page free results in coalescing ranges of free space (Dongming Liu)
      <ulink url="&commit_baseurl;a0003572f">&sect;</ulink>
     </para>

     <para>
      Ensure that the segment is moved into the
      appropriate <quote>bin</quote> for its new amount of free space, so
      that it will be found by subsequent searches.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Geoghegan <pg@bowt.ie>
Branch: master Release: REL_16_BR [5f0762f14] 2023-06-21 17:41:58 -0700
Branch: REL_15_STABLE [642bec1f8] 2023-06-21 17:41:56 -0700
Branch: REL_14_STABLE [63fa0deb3] 2023-06-21 17:41:54 -0700
Branch: REL_13_STABLE [b6311824f] 2023-06-21 17:41:52 -0700
Branch: REL_12_STABLE [355917c07] 2023-06-21 17:41:50 -0700
Branch: REL_11_STABLE [7ddba19eb] 2023-06-21 17:41:48 -0700
Branch: master Release: REL_16_BR [5abff197c] 2023-05-25 15:33:00 -0700
Branch: REL_15_STABLE [6983a5112] 2023-05-25 15:32:57 -0700
Branch: REL_14_STABLE [322c9b340] 2023-05-25 15:32:53 -0700
Branch: REL_13_STABLE [8f876d15c] 2023-05-25 15:32:50 -0700
Branch: REL_12_STABLE [188dad680] 2023-05-25 15:32:48 -0700
Branch: REL_11_STABLE [a72b503ca] 2023-05-25 15:32:45 -0700
-->
     <para>
      Allow <command>VACUUM</command> to continue after detecting certain
      types of b-tree index corruption (Peter Geoghegan)
      <ulink url="&commit_baseurl;b6311824f">&sect;</ulink>
      <ulink url="&commit_baseurl;8f876d15c">&sect;</ulink>
     </para>

     <para>
      If an invalid sibling-page link is detected, log the issue and press
      on, rather than throwing an error as before.  Nothing short
      of <command>REINDEX</command> will fix the broken index, but
      preventing <command>VACUUM</command> from completing until that is
      done risks making matters far worse.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [83ecfa9fa] 2023-07-13 13:03:28 -0700
Branch: REL_16_STABLE [03ccc9569] 2023-07-13 13:03:30 -0700
Branch: REL_15_STABLE [82e97b864] 2023-07-13 13:03:31 -0700
Branch: REL_14_STABLE [e246fd423] 2023-07-13 13:03:33 -0700
Branch: REL_13_STABLE [53336e8f6] 2023-07-13 13:03:34 -0700
Branch: REL_12_STABLE [7aec84e4c] 2023-07-13 13:03:36 -0700
Branch: REL_11_STABLE [1386f0987] 2023-07-13 13:03:37 -0700
-->
     <para>
      Ensure that <varname>WrapLimitsVacuumLock</varname> is released
      after <command>VACUUM</command> detects invalid data
      in <structname>pg_database</structname>.<structfield>datfrozenxid</structfield>
      or <structname>pg_database</structname>.<structfield>datminmxid</structfield>
      (Andres Freund)
      <ulink url="&commit_baseurl;53336e8f6">&sect;</ulink>
     </para>

     <para>
      Failure to release this lock could lead to a deadlock later,
      although the lock would be cleaned up if the session exits or
      encounters some other error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [cb0cca188] 2023-07-18 13:43:44 +0900
Branch: REL_16_STABLE [f88bc9f38] 2023-07-18 13:44:27 +0900
Branch: REL_15_STABLE [a878eff6b] 2023-07-18 13:44:29 +0900
Branch: REL_14_STABLE [442749100] 2023-07-18 13:44:31 +0900
Branch: REL_13_STABLE [db59108a2] 2023-07-18 13:44:33 +0900
Branch: REL_12_STABLE [d2ee542a2] 2023-07-18 13:44:34 +0900
Branch: REL_11_STABLE [bc0581f8f] 2023-07-18 13:44:35 +0900
Branch: master [4e465aac3] 2023-07-18 14:04:31 +0900
Branch: REL_16_STABLE [926aa6d11] 2023-07-18 14:04:46 +0900
Branch: REL_15_STABLE [f6ecd2622] 2023-07-18 14:04:48 +0900
Branch: REL_14_STABLE [763d26205] 2023-07-18 14:04:50 +0900
Branch: REL_13_STABLE [b3ca4f0a5] 2023-07-18 14:04:51 +0900
Branch: REL_12_STABLE [410a0d6bd] 2023-07-18 14:04:52 +0900
Branch: REL_11_STABLE [6c7bffc09] 2023-07-18 14:04:54 +0900
-->
     <para>
      Avoid double replay of prepared transactions during crash
      recovery (suyu.cmj, Michael Paquier)
      <ulink url="&commit_baseurl;db59108a2">&sect;</ulink>
      <ulink url="&commit_baseurl;b3ca4f0a5">&sect;</ulink>
     </para>

     <para>
      After a crash partway through a checkpoint with some two-phase
      transaction state data already flushed to disk by this checkpoint,
      crash recovery could attempt to replay the prepared transaction(s)
      twice, leading to a fatal error such as <quote>lock is already
      held</quote> in the startup process.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: REL_14_STABLE [f663b0091] 2023-06-20 09:36:35 +0900
Branch: REL_13_STABLE [896012b88] 2023-06-20 09:36:58 +0900
-->
     <para>
      Fix possible failure while promoting a standby server, if archiving
      is enabled and two-phase transactions need to be recovered (Julian
      Markwort)
      <ulink url="&commit_baseurl;896012b88">&sect;</ulink>
     </para>

     <para>
      If any required two-phase transactions were logged in the most
      recent (partial) log segment, promotion would fail with an incorrect
      complaint about <quote>requested WAL segment has already been
      removed</quote>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [4b4798e13] 2023-07-04 17:57:03 +0300
Branch: REL_16_STABLE [d431644b4] 2023-07-04 18:04:27 +0300
Branch: REL_15_STABLE [e24c02e4d] 2023-07-04 18:07:27 +0300
Branch: REL_14_STABLE [d85bf0719] 2023-07-04 18:07:46 +0300
Branch: REL_13_STABLE [acc8cdff4] 2023-07-04 18:08:08 +0300
Branch: REL_12_STABLE [1b4f1c6f8] 2023-07-04 18:08:26 +0300
Branch: REL_11_STABLE [6377f705c] 2023-07-04 18:08:40 +0300
-->
     <para>
      Ensure that a newly created, but still empty table
      is <function>fsync</function>'ed at the next checkpoint (Heikki
      Linnakangas)
      <ulink url="&commit_baseurl;acc8cdff4">&sect;</ulink>
     </para>

     <para>
      Without this, if there is an operating system crash causing the
      empty file to disappear, subsequent operations on the table might
      fail with <quote>could not open file</quote> errors.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [3142a8845] 2023-07-06 17:25:29 +0300
Branch: REL_16_STABLE [bf7b70e6b] 2023-07-06 17:28:50 +0300
Branch: REL_15_STABLE [25624c5d3] 2023-07-06 17:29:12 +0300
Branch: REL_14_STABLE [32f327f68] 2023-07-06 17:29:13 +0300
Branch: REL_13_STABLE [c50b869ed] 2023-07-06 17:29:14 +0300
Branch: REL_12_STABLE [80abec387] 2023-07-06 17:29:15 +0300
Branch: REL_11_STABLE [988719b88] 2023-07-06 17:29:16 +0300
-->
     <para>
      Ensure that creation of the init fork of an unlogged index is
      WAL-logged (Heikki Linnakangas)
      <ulink url="&commit_baseurl;c50b869ed">&sect;</ulink>
     </para>

     <para>
      While an unlogged index's main data fork is not WAL-logged, its init
      fork should be, to ensure that we have a consistent state to restore
      the index to after a crash.  This step was missed if the init fork
      contains no data, which is a case not used by any standard index AM;
      but perhaps some extension behaves that way.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: REL_14_STABLE [c6043fcbb] 2023-06-11 10:33:46 +0900
Branch: REL_13_STABLE [37236ca06] 2023-06-11 10:33:56 +0900
Branch: REL_12_STABLE [9920552e1] 2023-06-11 10:33:59 +0900
Branch: REL_11_STABLE [a9c3472e0] 2023-06-11 10:34:00 +0900
-->
     <para>
      Fix missing reinitializations of delay-checkpoint-end flags
      (suyu.cmj)
      <ulink url="&commit_baseurl;37236ca06">&sect;</ulink>
     </para>

     <para>
      This could result in unnecessary delays of checkpoints, or in
      assertion failures in assert-enabled builds.
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [deae1657e] 2023-08-02 01:39:47 +1200
Branch: REL_16_STABLE [b25acc302] 2023-08-02 01:40:27 +1200
Branch: REL_15_STABLE [67f3a697b] 2023-08-02 01:40:56 +1200
Branch: REL_14_STABLE [f457f2ef1] 2023-08-02 01:41:21 +1200
Branch: REL_13_STABLE [74a5bf1b6] 2023-08-02 01:41:55 +1200
Branch: REL_12_STABLE [668990980] 2023-08-02 01:44:31 +1200
-->
     <para>
      Fix overly strict assertion in <type>jsonpath</type> code
      (David Rowley)
      <ulink url="&commit_baseurl;74a5bf1b6">&sect;</ulink>
     </para>

     <para>
      This assertion failed if a query applied
      the <literal>.type()</literal> operator to
      a <literal>like_regex</literal> result.
      There was no bug in non-assert builds.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_16_BR [555b929bb] 2023-06-21 11:07:24 -0400
Branch: REL_15_STABLE [cb74f7bec] 2023-06-21 11:07:11 -0400
Branch: REL_14_STABLE [120ea65b8] 2023-06-21 11:07:11 -0400
Branch: REL_13_STABLE [d1fc0f382] 2023-06-21 11:07:11 -0400
Branch: REL_12_STABLE [a98a04005] 2023-06-21 11:07:11 -0400
Branch: REL_11_STABLE [a8be2356c] 2023-06-21 11:07:11 -0400
-->
     <para>
      Avoid assertion failure when processing an empty statement via the
      extended query protocol in an already-aborted transaction (Tom Lane)
      <ulink url="&commit_baseurl;d1fc0f382">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_16_BR [1d369c9e9] 2023-05-16 10:53:42 -0400
Branch: REL_15_STABLE [eaf99e4c4] 2023-05-16 10:53:42 -0400
Branch: REL_14_STABLE [ccd362325] 2023-05-16 10:53:42 -0400
Branch: REL_13_STABLE [0409c7fc7] 2023-05-16 10:53:42 -0400
Branch: REL_12_STABLE [0966291a4] 2023-05-16 10:53:42 -0400
Branch: REL_11_STABLE [8084bf9a4] 2023-05-16 10:53:42 -0400
-->
     <para>
      Fix <filename>contrib/fuzzystrmatch</filename>'s
      Soundex <function>difference()</function> function to handle empty
      input sanely (Alexander Lakhin, Tom Lane)
      <ulink url="&commit_baseurl;0409c7fc7">&sect;</ulink>
     </para>

     <para>
      An input string containing no alphabetic characters resulted in
      unpredictable output.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master Release: REL_16_BR [d522b05c8] 2023-06-12 09:14:03 +0900
Branch: REL_15_STABLE [3a5222a43] 2023-06-12 09:14:13 +0900
Branch: REL_14_STABLE [e0e682945] 2023-06-12 09:14:14 +0900
Branch: REL_13_STABLE [78bf0a256] 2023-06-12 09:14:17 +0900
Branch: REL_12_STABLE [edf1de65e] 2023-06-12 09:14:19 +0900
Branch: REL_11_STABLE [bbfc26d86] 2023-06-12 09:14:20 +0900
-->
     <para>
      Tighten whitespace checks in <filename>contrib/hstore</filename>
      input (Evan Jones)
      <ulink url="&commit_baseurl;78bf0a256">&sect;</ulink>
     </para>

     <para>
      In some cases, characters would be falsely recognized as whitespace
      and hence discarded.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master Release: REL_16_BR [c00fbe89d] 2023-06-15 13:45:34 +0900
Branch: REL_15_STABLE [4be308ede] 2023-06-15 13:45:38 +0900
Branch: REL_14_STABLE [019a40d61] 2023-06-15 13:45:40 +0900
Branch: REL_13_STABLE [ae9aac64a] 2023-06-15 13:45:41 +0900
Branch: REL_12_STABLE [6ecc1c02a] 2023-06-15 13:45:42 +0900
Branch: REL_11_STABLE [ab40b0395] 2023-06-15 13:45:44 +0900
-->
     <para>
      Disallow oversize input arrays
      with <filename>contrib/intarray</filename>'s
      <literal>gist__int_ops</literal> index opclass (Ankit Kumar Pandey,
      Alexander Lakhin)
      <ulink url="&commit_baseurl;ae9aac64a">&sect;</ulink>
     </para>

     <para>
      Previously this code would report a <literal>NOTICE</literal> but
      press on anyway, creating an invalid index entry that presents a
      risk of crashes when the index is read.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [8aac9759b] 2023-07-13 13:07:51 -0400
Branch: REL_16_STABLE [e27f3f52c] 2023-07-13 13:08:08 -0400
Branch: REL_15_STABLE [5cb461989] 2023-07-13 13:08:17 -0400
Branch: REL_14_STABLE [a6991f763] 2023-07-13 13:08:23 -0400
Branch: REL_13_STABLE [7fffcc2ee] 2023-07-13 13:08:28 -0400
Branch: REL_12_STABLE [8d8f37149] 2023-07-13 13:08:33 -0400
Branch: REL_11_STABLE [9f70f6d4c] 2023-07-13 13:08:40 -0400
-->
     <para>
      Avoid useless double decompression of GiST index entries
      in <filename>contrib/intarray</filename> (Konstantin Knizhnik,
      Matthias van de Meent, Tom Lane)
      <ulink url="&commit_baseurl;7fffcc2ee">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [a5ea825f9] 2023-07-14 11:15:34 +0900
Branch: REL_16_STABLE [27da47122] 2023-07-14 11:16:03 +0900
Branch: REL_15_STABLE [eb3abec4b] 2023-07-14 11:16:06 +0900
Branch: REL_14_STABLE [7af65523a] 2023-07-14 11:16:08 +0900
Branch: REL_13_STABLE [bdaaf1bf1] 2023-07-14 11:16:10 +0900
Branch: REL_12_STABLE [7d27493b7] 2023-07-14 11:16:11 +0900
Branch: REL_11_STABLE [db9813819] 2023-07-14 11:16:13 +0900
-->
     <para>
      Ensure
      that <structname>pg_index</structname>.<structfield>indisreplident</structfield>
      is kept up-to-date in relation cache entries (Shruthi Gowda)
      <ulink url="&commit_baseurl;bdaaf1bf1">&sect;</ulink>
     </para>

     <para>
      This value could be stale in some cases.  There is no core code that
      relies on the relation cache's copy, so this is only a latent bug as
      far as Postgres itself is concerned; but there may be extensions for
      which it is a live bug.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: REL_13_STABLE [8aa9a2623] 2023-06-24 20:22:57 +0900
Branch: REL_12_STABLE [265c9138d] 2023-06-24 20:26:56 +0900
Branch: REL_11_STABLE [96f96398d] 2023-06-24 20:29:42 +0900
-->
     <para>
      Silence deprecation warnings when compiling with OpenSSL 3.0.0 or
      later (Peter Eisentraut)
      <ulink url="&commit_baseurl;8aa9a2623">&sect;</ulink>
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-11">
  <title>Release 13.11</title>

  <formalpara>
  <title>Release date:</title>
  <para>2023-05-11</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.10.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.11</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you are upgrading from a version earlier than 13.7,
    see <xref linkend="release-13-7"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [681d9e462] 2023-05-08 06:14:07 -0700
Branch: REL_15_STABLE [dbd5795e7] 2023-05-08 06:14:11 -0700
Branch: REL_14_STABLE [01e8182c7] 2023-05-08 06:14:11 -0700
Branch: REL_13_STABLE [2212f7db8] 2023-05-08 06:14:12 -0700
Branch: REL_12_STABLE [78119a0bf] 2023-05-08 06:14:12 -0700
Branch: REL_11_STABLE [23cb8eaeb] 2023-05-08 06:14:12 -0700
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [8d525d7b9] 2023-05-08 11:24:47 -0400
Branch: REL_15_STABLE [1b761d896] 2023-05-08 11:24:47 -0400
Branch: REL_14_STABLE [1913f63dc] 2023-05-08 11:24:47 -0400
Branch: REL_13_STABLE [feb9e7fbb] 2023-05-08 11:24:47 -0400
Branch: REL_12_STABLE [2cd843cc9] 2023-05-08 11:24:47 -0400
Branch: REL_11_STABLE [766e06140] 2023-05-08 11:24:47 -0400
-->
     <para>
      Prevent <command>CREATE SCHEMA</command> from defeating changes
      in <varname>search_path</varname> (Alexander Lakhin)
      <ulink url="&commit_baseurl;2212f7db8">&sect;</ulink>
      <ulink url="&commit_baseurl;feb9e7fbb">&sect;</ulink>
     </para>

     <para>
      Within a <command>CREATE SCHEMA</command> command, objects in the
      prevailing <varname>search_path</varname>, as well as those in the
      newly-created schema, would be visible even within a called
      function or script that attempted to set a
      secure <varname>search_path</varname>.  This could allow any user
      having permission to create a schema to hijack the privileges of a
      security definer function or extension script.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Alexander Lakhin for reporting this problem.
      (CVE-2023-2454)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ca73753b0] 2023-05-08 10:12:44 -0400
Branch: REL_15_STABLE [04e560604] 2023-05-08 10:12:44 -0400
Branch: REL_14_STABLE [f8d799eda] 2023-05-08 10:12:44 -0400
Branch: REL_13_STABLE [b8e28f04f] 2023-05-08 10:12:44 -0400
Branch: REL_12_STABLE [ee87b482c] 2023-05-08 10:12:45 -0400
Branch: REL_11_STABLE [473626cf0] 2023-05-08 10:12:45 -0400
-->
     <para>
      Enforce row-level security policies correctly after inlining a
      set-returning function (Stephen Frost, Tom Lane)
      <ulink url="&commit_baseurl;b8e28f04f">&sect;</ulink>
     </para>

     <para>
      If a set-returning SQL-language function refers to a table having
      row-level security policies, and it can be inlined into a calling
      query, those RLS policies would not get enforced properly in some
      cases involving re-using a cached plan under a different role.
      This could allow a user to see or modify rows that should have been
      invisible.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Wolfgang Walther for reporting this problem.
      (CVE-2023-2455)
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [4dadd660f] 2023-04-28 19:29:12 +0900
Branch: REL_15_STABLE [b9ad73ad2] 2023-04-28 19:29:36 +0900
Branch: REL_14_STABLE [d29eba198] 2023-04-28 19:29:38 +0900
Branch: REL_13_STABLE [7e95a33b4] 2023-04-28 19:29:40 +0900
Branch: REL_12_STABLE [63f7e91ec] 2023-04-28 19:29:42 +0900
Branch: REL_11_STABLE [a9212716b] 2023-04-28 19:29:44 +0900
-->
     <para>
      Avoid crash when the new schema name is omitted
      in <command>CREATE SCHEMA</command> (Michael Paquier)
      <ulink url="&commit_baseurl;7e95a33b4">&sect;</ulink>
     </para>

     <para>
      The SQL standard allows writing <literal>CREATE SCHEMA AUTHORIZATION
      <replaceable>owner_name</replaceable></literal>, with the schema
      name defaulting to <replaceable>owner_name</replaceable>.  However
      some code paths expected the schema name to be present and would
      fail.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [4766eef31] 2023-04-05 12:56:32 -0400
Branch: REL_15_STABLE [2624de79e] 2023-04-05 12:56:30 -0400
Branch: REL_14_STABLE [0a6aaf011] 2023-04-05 12:56:30 -0400
Branch: REL_13_STABLE [b02bf1e46] 2023-04-05 12:56:30 -0400
Note: no live bug fixed in v15 or HEAD
-->
     <para>
      Fix enabling/disabling of cloned triggers in partitioned tables
      (Tom Lane)
      <ulink url="&commit_baseurl;b02bf1e46">&sect;</ulink>
     </para>

     <para>
      <command>ALTER TABLE ... ENABLE/DISABLE TRIGGER USER</command>
      skipped cloned triggers, mistaking them for system triggers.
      Other variants of <literal>ENABLE/DISABLE TRIGGER</literal> would
      process them, but only after improperly enforcing a superuserness
      check.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a3c9d35ae] 2023-03-27 15:04:15 -0400
Branch: REL_15_STABLE [d90d59e25] 2023-03-27 15:04:02 -0400
Branch: REL_14_STABLE [334cc4c96] 2023-03-27 15:04:02 -0400
Branch: REL_13_STABLE [29a20ff06] 2023-03-27 15:04:02 -0400
Branch: REL_12_STABLE [cd07163c0] 2023-03-27 15:04:02 -0400
Branch: REL_11_STABLE [78838bc3d] 2023-03-27 15:04:02 -0400
-->
     <para>
      Disallow altering composite types that are stored in indexes
      (Tom Lane)
      <ulink url="&commit_baseurl;29a20ff06">&sect;</ulink>
     </para>

     <para>
      <command>ALTER TYPE</command> disallows non-binary-compatible
      modifications of composite types if they are stored in any table
      columns.  (Perhaps that will be allowed someday, but it hasn't
      happened yet; the locking implications of rewriting many tables are
      daunting.)  We overlooked the possibility that an index might
      contain a composite type that doesn't also appear in its table.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [f0d65c0ea] 2023-03-31 11:18:49 -0400
Branch: REL_15_STABLE [6e3698173] 2023-03-31 11:18:49 -0400
Branch: REL_14_STABLE [b0b55d8b8] 2023-03-31 11:18:49 -0400
Branch: REL_13_STABLE [bfb993b1b] 2023-03-31 11:18:49 -0400
Branch: REL_12_STABLE [e8d74aac5] 2023-03-31 11:18:49 -0400
-->
     <para>
      Disallow system columns as elements of foreign keys (Tom Lane)
      <ulink url="&commit_baseurl;bfb993b1b">&sect;</ulink>
     </para>

     <para>
      Since the removal of OID as a system column, there is no plausible
      use-case for this, and various bits of code no longer support it.
      Disallow it rather than trying to fix all the cases.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d66bb048c] 2023-03-10 13:52:44 -0500
Branch: REL_15_STABLE [59947bac7] 2023-03-10 13:52:28 -0500
Branch: REL_14_STABLE [53a53ea33] 2023-03-10 13:52:28 -0500
Branch: REL_13_STABLE [866fd004d] 2023-03-10 13:52:28 -0500
Branch: REL_12_STABLE [a30310833] 2023-03-10 13:52:28 -0500
Branch: REL_11_STABLE [6e2674d77] 2023-03-10 13:52:28 -0500
-->
     <para>
      Ensure that <command>COPY TO</command> from an RLS-enabled parent
      table does not copy any rows from child tables (Antonin Houska)
      <ulink url="&commit_baseurl;866fd004d">&sect;</ulink>
     </para>

     <para>
      The documentation is quite clear that <command>COPY TO</command>
      copies rows from only the named table, not any inheritance children
      it may have.  However, if row-level security was enabled on the table
      then this stopped being true.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [4c40995f6] 2023-05-04 11:48:23 -0400
Branch: REL_15_STABLE [ccb479e76] 2023-05-04 11:48:23 -0400
Branch: REL_14_STABLE [d5de344a5] 2023-05-04 11:48:23 -0400
Branch: REL_13_STABLE [9a72f499a] 2023-05-04 11:48:23 -0400
Branch: REL_12_STABLE [580df5078] 2023-05-04 11:48:23 -0400
Branch: REL_11_STABLE [4624aad61] 2023-05-04 11:48:23 -0400
-->
     <para>
      Avoid possible crash when <function>array_position()</function>
      or <function>array_positions()</function> is passed an empty array
      (Tom Lane)
      <ulink url="&commit_baseurl;9a72f499a">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [b081fe419] 2023-03-14 19:17:31 -0400
Branch: REL_15_STABLE [a67c75f82] 2023-03-14 19:17:31 -0400
Branch: REL_14_STABLE [7cac19105] 2023-03-14 19:17:31 -0400
Branch: REL_13_STABLE [386a26023] 2023-03-14 19:17:31 -0400
Branch: REL_12_STABLE [6d3a9a60f] 2023-03-14 19:17:31 -0400
Branch: REL_11_STABLE [8e33fb9ef] 2023-03-14 19:17:31 -0400
-->
     <para>
      Fix possible out-of-bounds fetch in <function>to_char()</function>
      (Tom Lane)
      <ulink url="&commit_baseurl;386a26023">&sect;</ulink>
     </para>

     <para>
      With bad luck this could have resulted in a server crash.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d7056bc1c] 2023-03-01 11:30:31 -0500
Branch: REL_15_STABLE [eae09137d] 2023-03-01 11:30:17 -0500
Branch: REL_14_STABLE [1a9356f65] 2023-03-01 11:30:17 -0500
Branch: REL_13_STABLE [3b37e8442] 2023-03-01 11:30:17 -0500
Branch: REL_12_STABLE [b162660d3] 2023-03-01 11:30:17 -0500
Branch: REL_11_STABLE [b1a9d8ef2] 2023-03-01 11:30:17 -0500
-->
     <para>
      Avoid buffer overread in <function>translate()</function> function
      (Daniil Anisimov)
      <ulink url="&commit_baseurl;3b37e8442">&sect;</ulink>
     </para>

     <para>
      When using the deletion feature, the function might fetch the byte
      just after the input string, creating a small risk of crash.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [25a7812cd] 2023-03-13 15:19:00 -0400
Branch: REL_15_STABLE [74a1a36d7] 2023-03-13 15:19:00 -0400
Branch: REL_14_STABLE [0ee9d685d] 2023-03-13 15:19:00 -0400
Branch: REL_13_STABLE [52e9a7816] 2023-03-13 15:19:00 -0400
Branch: REL_12_STABLE [c25a929a6] 2023-03-13 15:19:00 -0400
Branch: REL_11_STABLE [234941a3b] 2023-03-13 15:19:00 -0400
-->
     <para>
      Fix error cursor setting for parse errors in JSON string literals
      (Tom Lane)
      <ulink url="&commit_baseurl;52e9a7816">&sect;</ulink>
     </para>

     <para>
      Most cases in which a syntax error is detected in a string literal
      within a JSON value failed to set the error cursor appropriately.
      This led at least to an unhelpful error message (pointing to the
      token before the string, rather than the actual trouble spot), and
      could even result in a crash in v14 and later.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [be504a3e9] 2023-03-07 21:52:32 -0800
Branch: REL_15_STABLE [391f08fd6] 2023-03-07 21:36:48 -0800
Branch: REL_14_STABLE [324281fd5] 2023-03-07 21:36:49 -0800
Branch: REL_13_STABLE [e6d77f22c] 2023-03-07 21:36:51 -0800
Branch: REL_12_STABLE [3c92f7e9d] 2023-03-07 21:36:52 -0800
-->
     <para>
      Fix data corruption due to <varname>vacuum_defer_cleanup_age</varname>
      being larger than the current 64-bit xid (Andres Freund)
      <ulink url="&commit_baseurl;e6d77f22c">&sect;</ulink>
     </para>

     <para>
      In v14 and later with non-default settings
      of <varname>vacuum_defer_cleanup_age</varname>, it was possible to
      compute a very large vacuum cleanup horizon xid, leading to vacuum
      removing rows that are still live.  v12 and v13 have a lesser form
      of the same problem affecting only GiST indexes, which could lead to
      index pages getting recycled too early.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [30dbdbe75] 2023-03-13 12:40:28 -0400
Branch: REL_15_STABLE [5fd61bdc1] 2023-03-13 12:40:28 -0400
Branch: REL_14_STABLE [096e70805] 2023-03-13 12:40:28 -0400
Branch: REL_13_STABLE [bc0bcce2e] 2023-03-13 12:40:28 -0400
Branch: REL_12_STABLE [62a91a1b0] 2023-03-13 12:40:28 -0400
Branch: REL_11_STABLE [0736b1131] 2023-03-13 12:40:28 -0400
-->
     <para>
      Fix parser's failure to detect some cases of improperly-nested
      aggregates (Tom Lane)
      <ulink url="&commit_baseurl;bc0bcce2e">&sect;</ulink>
     </para>

     <para>
      This oversight could lead to executor failures for queries that
      should have been rejected as invalid.
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [6c3b697b1] 2023-03-31 12:13:05 +1300
Branch: REL_15_STABLE [df567fbf6] 2023-03-31 12:13:34 +1300
Branch: REL_14_STABLE [211016220] 2023-03-31 12:14:04 +1300
Branch: REL_13_STABLE [8d684c445] 2023-03-31 12:14:31 +1300
Branch: REL_12_STABLE [33510bc64] 2023-03-31 12:15:07 +1300
Branch: REL_11_STABLE [07554c99d] 2023-03-31 12:15:39 +1300
-->
     <para>
      Fix data structure corruption during parsing of
      serial <literal>SEQUENCE NAME</literal> options (David Rowley)
      <ulink url="&commit_baseurl;8d684c445">&sect;</ulink>
     </para>

     <para>
      This can lead to trouble if an event trigger captures the corrupted
      parse tree.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [88ceac5d7] 2023-04-12 10:46:38 -0400
Branch: REL_15_STABLE [f4badbcf4] 2023-04-12 10:46:30 -0400
Branch: REL_14_STABLE [0dd55ef9b] 2023-04-12 10:46:30 -0400
Branch: REL_13_STABLE [96c698e3f] 2023-04-12 10:46:30 -0400
Branch: REL_12_STABLE [953ff99c2] 2023-04-12 10:46:30 -0400
Branch: REL_11_STABLE [60c8aeaf6] 2023-04-12 10:46:30 -0400
-->
     <para>
      Correctly update plan nodes' parallel-safety markings when moving
      initplans from one node to another (Tom Lane)
      <ulink url="&commit_baseurl;96c698e3f">&sect;</ulink>
     </para>

     <para>
      This planner oversight could lead to <quote>subplan was not
      initialized</quote> errors at runtime.
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [836c31ba5] 2023-02-13 17:11:03 +1300
Branch: REL_15_STABLE [a9fa6d79a] 2023-02-13 17:10:31 +1300
Branch: REL_14_STABLE [4aa43ba21] 2023-02-13 17:09:55 +1300
Branch: REL_13_STABLE [301eb3ee4] 2023-02-13 17:09:26 +1300
Branch: REL_12_STABLE [ac55abd33] 2023-02-13 17:08:46 +1300
Branch: REL_11_STABLE [8d2a8581b] 2023-02-13 17:07:04 +1300
-->
     <para>
      Disable the inverse-transition optimization for window aggregates
      when the call contains sub-SELECTs (David Rowley)
      <ulink url="&commit_baseurl;301eb3ee4">&sect;</ulink>
     </para>

     <para>
      This optimization requires that the aggregate's argument expressions
      have repeatable results, which might not hold for a sub-SELECT.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [554841699] 2023-03-26 13:41:06 -0400
Branch: REL_15_STABLE [7c4873438] 2023-03-26 13:41:06 -0400
Branch: REL_14_STABLE [11213d446] 2023-03-26 13:41:06 -0400
Branch: REL_13_STABLE [1bbbe1460] 2023-03-26 13:41:06 -0400
Branch: REL_12_STABLE [ad5fe7420] 2023-03-26 13:41:06 -0400
Branch: REL_11_STABLE [ae320fc21] 2023-03-26 13:41:06 -0400
-->
     <para>
      Fix oversights in execution of nested <literal>ARRAY[]</literal>
      constructs (Alexander Lakhin, Tom Lane)
      <ulink url="&commit_baseurl;1bbbe1460">&sect;</ulink>
     </para>

     <para>
      Correctly detect overflow of the total space needed for the result
      array, avoiding a possible crash due to undersized output
      allocation.  Also ensure that any trailing padding space in the
      result array is zeroed; while leaving garbage there is harmless for
      most purposes, it can result in odd behavior later.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [064eb89e8] 2023-04-15 12:01:39 -0400
Branch: REL_15_STABLE [c53ed26ea] 2023-04-15 12:01:39 -0400
Branch: REL_14_STABLE [9b104a27c] 2023-04-15 12:01:39 -0400
Branch: REL_13_STABLE [7428aecdd] 2023-04-15 12:01:39 -0400
Branch: REL_12_STABLE [048caf8d7] 2023-04-15 12:01:39 -0400
-->
     <para>
      Prevent crash when updating a field within an
      array-of-domain-over-composite-type column (Dmitry Dolgov)
      <ulink url="&commit_baseurl;7428aecdd">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [e0693faf7] 2023-04-14 16:20:27 +1200
Branch: REL_15_STABLE [0c09160e1] 2023-04-14 16:21:07 +1200
Branch: REL_14_STABLE [ae85fb828] 2023-04-14 16:21:42 +1200
Branch: REL_13_STABLE [6848f0c67] 2023-04-14 16:22:11 +1200
Branch: REL_12_STABLE [0b2e77ce2] 2023-04-14 16:22:46 +1200
Branch: REL_11_STABLE [1c19e2863] 2023-04-14 16:23:11 +1200
-->
     <para>
      Fix partition pruning logic for partitioning on boolean columns
      (David Rowley)
      <ulink url="&commit_baseurl;6848f0c67">&sect;</ulink>
     </para>

     <para>
      Pruning with a condition like <literal>boolcol IS NOT TRUE</literal>
      was done incorrectly, leading to possibly not returning rows in
      which <literal>boolcol</literal> is NULL.  Also, the rather unlikely
      case of partitioning on <literal>NOT boolcol</literal> was handled
      incorrectly.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [8d578b9b2] 2023-03-21 14:29:34 +1300
Branch: REL_15_STABLE [c03c6e8cf] 2023-03-21 14:32:14 +1300
Branch: REL_14_STABLE [1b9e42e82] 2023-03-21 14:37:33 +1300
Branch: REL_13_STABLE [6e94d62e3] 2023-03-21 14:38:59 +1300
Branch: REL_12_STABLE [44d44aa97] 2023-03-21 14:41:35 +1300
Branch: REL_11_STABLE [ef16d2724] 2023-03-21 14:43:07 +1300
-->
     <para>
      Fix race condition in per-batch cleanup during parallel hash join
      (Thomas Munro, Melanie Plageman)
      <ulink url="&commit_baseurl;6e94d62e3">&sect;</ulink>
     </para>

     <para>
      A crash was possible given unlucky timing and
      <varname>parallel_leader_participation</varname>
      = <literal>off</literal> (which is not the default).
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [7fee7871b] 2023-03-06 18:31:27 -0500
Branch: REL_15_STABLE [70ef50954] 2023-03-06 18:31:16 -0500
Branch: REL_14_STABLE [1e05ea51d] 2023-03-06 18:31:16 -0500
Branch: REL_13_STABLE [4a94cbd02] 2023-03-06 18:31:16 -0500
Branch: REL_12_STABLE [23b75dd03] 2023-03-06 18:31:16 -0500
-->
     <para>
      Recalculate <literal>GENERATED</literal> columns after an
      EvalPlanQual check (Tom Lane)
      <ulink url="&commit_baseurl;4a94cbd02">&sect;</ulink>
     </para>

     <para>
      In <literal>READ COMMITTED</literal> isolation mode, the effects of
      a row update might need to get reapplied to a newer version of the
      row than the query found originally.  If so, we need to recompute
      any <literal>GENERATED</literal> columns, in case they depend on
      columns that were changed by the concurrent update.
     </para>
    </listitem>

    <listitem>
<!--
Author: Daniel Gustafsson <dgustafsson@postgresql.org>
Branch: master [bfac8f8bc] 2023-04-25 13:54:10 +0200
Branch: REL_15_STABLE [0319b306e] 2023-04-25 13:54:10 +0200
Branch: REL_14_STABLE [0e8e5e856] 2023-04-25 13:54:10 +0200
Branch: REL_13_STABLE [b95f36f86] 2023-04-25 13:54:10 +0200
Branch: REL_12_STABLE [cba3c8f6d] 2023-04-25 13:54:10 +0200
Branch: REL_11_STABLE [0151d2c5f] 2023-04-25 13:54:10 +0200
-->
     <para>
      Don't balance vacuum cost delay when a table has a
      per-relation <varname>vacuum_cost_delay</varname> setting of zero
      (Masahiko Sawada)
      <ulink url="&commit_baseurl;b95f36f86">&sect;</ulink>
     </para>

     <para>
      Delay balancing is supposed to be disabled whenever autovacuum is
      processing a table with a
      per-relation <varname>vacuum_cost_delay</varname> setting, but this
      was done only for positive settings, not zero.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [99be6feec] 2023-03-07 18:21:53 -0500
Branch: REL_15_STABLE [76d2177fb] 2023-03-07 18:21:53 -0500
Branch: REL_14_STABLE [9f1e51b59] 2023-03-07 18:21:37 -0500
Branch: REL_13_STABLE [695b34ab3] 2023-03-07 18:21:37 -0500
Branch: REL_12_STABLE [5a19da58e] 2023-03-07 18:21:37 -0500
Branch: REL_11_STABLE [721626cb5] 2023-03-07 18:21:37 -0500
-->
     <para>
      Fix corner-case crashes when columns have been added to the end of a
      view (Tom Lane)
      <ulink url="&commit_baseurl;695b34ab3">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [87f3667ec] 2023-02-25 14:44:14 -0500
Branch: REL_15_STABLE [a033f9165] 2023-02-25 14:44:14 -0500
Branch: REL_14_STABLE [9eaba0602] 2023-02-25 14:44:14 -0500
Branch: REL_13_STABLE [1e199c259] 2023-02-25 14:44:14 -0500
Branch: REL_12_STABLE [904b171a4] 2023-02-25 14:44:14 -0500
Branch: REL_11_STABLE [ffec64ba8] 2023-02-25 14:44:14 -0500
-->
     <para>
      Repair rare failure of MULTIEXPR_SUBLINK subplans in partitioned
      updates (Andres Freund, Tom Lane)
      <ulink url="&commit_baseurl;1e199c259">&sect;</ulink>
     </para>

     <para>
      Use of the syntax <literal>INSERT ... ON CONFLICT DO UPDATE SET (c1,
      ...) = (SELECT ...)</literal> with a partitioned target table could
      result in failure if any child table is dissimilar from the parent
      (for example, different physical column order).
      This typically manifested as failure of consistency checks in the
      executor; but a crash or incorrect data updates are also possible.
     </para>
    </listitem>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [75c737636] 2023-02-23 10:53:01 +0000
Branch: REL_15_STABLE [940b54743] 2023-02-23 10:54:51 +0000
Branch: REL_14_STABLE [f0423bea7] 2023-02-23 10:55:48 +0000
Branch: REL_13_STABLE [226da3d47] 2023-02-23 10:56:41 +0000
Branch: REL_12_STABLE [98b83b734] 2023-02-23 10:57:46 +0000
Branch: REL_11_STABLE [e68b133c3] 2023-02-23 10:58:43 +0000
-->
     <para>
      Fix handling of <literal>DEFAULT</literal> markers within a
      multi-row <literal>INSERT ... VALUES</literal> query on a view that
      has a <literal>DO ALSO INSERT ... SELECT</literal> rule (Dean
      Rasheed)
      <ulink url="&commit_baseurl;226da3d47">&sect;</ulink>
     </para>

     <para>
      Such cases typically failed with <quote>unrecognized node
      type</quote> errors or assertion failures.
     </para>
    </listitem>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [a7d71c41d] 2023-02-25 14:41:12 +0000
Branch: REL_15_STABLE [8e5b4e001] 2023-02-25 14:43:57 +0000
Branch: REL_14_STABLE [27ff93d18] 2023-02-25 14:44:49 +0000
Branch: REL_13_STABLE [39ad791e8] 2023-02-25 14:45:44 +0000
Branch: REL_12_STABLE [4fd093af7] 2023-02-25 14:47:03 +0000
Branch: REL_11_STABLE [79f194cc0] 2023-02-25 14:48:08 +0000
-->
     <para>
      Support references to <literal>OLD</literal>
      and <literal>NEW</literal> within subqueries in rule actions
      (Dean Rasheed, Tom Lane)
      <ulink url="&commit_baseurl;39ad791e8">&sect;</ulink>
     </para>

     <para>
      Such references are really lateral references, but the server could
      crash if the subquery wasn't explicitly marked
      with <literal>LATERAL</literal>.  Arrange to do that implicitly when
      necessary.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [393430f57] 2023-02-17 16:40:34 -0500
Branch: REL_15_STABLE [c8a5f1685] 2023-02-17 16:40:34 -0500
Branch: REL_14_STABLE [14345f3c6] 2023-02-17 16:40:34 -0500
Branch: REL_13_STABLE [4efb4f0d4] 2023-02-17 16:40:34 -0500
Branch: REL_12_STABLE [3dd287c14] 2023-02-17 16:40:34 -0500
Branch: REL_11_STABLE [df931e9ab] 2023-02-17 16:40:34 -0500
-->
     <para>
      When decompiling a rule or SQL function body
      containing <command>INSERT</command>/<command>UPDATE</command>/<command>DELETE</command>
      within <command>WITH</command>, take care to print the correct alias
      for the target table (Tom Lane)
      <ulink url="&commit_baseurl;4efb4f0d4">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [47c0accbe] 2023-03-06 15:07:15 +1300
Branch: REL_15_STABLE [055990904] 2023-03-06 16:05:47 +1300
Branch: REL_14_STABLE [e9051ecd5] 2023-03-06 16:17:22 +1300
Branch: REL_13_STABLE [a0f55fc86] 2023-03-06 16:28:34 +1300
Branch: REL_12_STABLE [afa122e41] 2023-03-06 16:41:34 +1300
Branch: master [65e388d41] 2023-03-09 16:33:24 +1300
Branch: REL_15_STABLE [af397c6c2] 2023-03-09 16:56:51 +1300
Branch: REL_14_STABLE [d811d74be] 2023-03-09 16:57:11 +1300
Branch: REL_13_STABLE [ae632f7a3] 2023-03-09 17:09:57 +1300
Branch: REL_12_STABLE [e30fd0942] 2023-03-09 17:25:20 +1300
Branch: REL_11_STABLE [d1c0f81e7] 2023-03-09 17:26:06 +1300
-->
     <para>
      Fix glitches in <literal>SERIALIZABLE READ ONLY</literal>
      optimization (Thomas Munro)
      <ulink url="&commit_baseurl;a0f55fc86">&sect;</ulink>
      <ulink url="&commit_baseurl;ae632f7a3">&sect;</ulink>
     </para>

     <para>
      Transactions already marked as <quote>doomed</quote> confused the
      safe-snapshot optimization for <literal>SERIALIZABLE READ
      ONLY</literal> transactions.  The optimization was unnecessarily
      skipped in some cases.  In other cases an assertion failure occurred
      (but there was no problem in non-assert builds).
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [05172f1f3] 2023-02-23 15:40:42 -0500
Branch: REL_15_STABLE [cef1c9c0c] 2023-02-23 15:40:28 -0500
Branch: REL_14_STABLE [0f78df719] 2023-02-23 15:40:28 -0500
Branch: REL_13_STABLE [861e9e486] 2023-02-23 15:40:28 -0500
Branch: REL_12_STABLE [95558bc8f] 2023-02-23 15:40:28 -0500
Branch: REL_11_STABLE [44dbc960f] 2023-02-23 15:40:28 -0500
-->
     <para>
      Avoid leaking cache callback slots in
      the <literal>pgoutput</literal> logical decoding plugin (Shi Yu)
      <ulink url="&commit_baseurl;861e9e486">&sect;</ulink>
     </para>

     <para>
      Multiple cycles of starting up and shutting down the plugin within a
      single session would eventually lead to an <quote>out of
      relcache_callback_list slots</quote> error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
Branch: master [cd115c353] 2023-04-23 13:58:41 +0300
Branch: REL_15_STABLE [6e7361c85] 2023-04-23 14:00:06 +0300
Branch: REL_14_STABLE [9ef5a3583] 2023-04-23 14:00:13 +0300
Branch: REL_13_STABLE [02191136c] 2023-04-23 14:00:16 +0300
-->
     <para>
      Avoid unnecessary calls to custom validators for index operator
      class options (Alexander Korotkov)
      <ulink url="&commit_baseurl;02191136c">&sect;</ulink>
     </para>

     <para>
      This change fixes some cases where an unexpected error was thrown.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [8e5eef50c] 2023-03-29 11:31:30 -0400
Branch: REL_15_STABLE [2dc77adc7] 2023-03-29 11:31:30 -0400
Branch: REL_14_STABLE [a1904c9ce] 2023-03-29 11:31:30 -0400
Branch: REL_13_STABLE [2adb6adad] 2023-03-29 11:31:30 -0400
Branch: REL_12_STABLE [d2a1d4b19] 2023-03-29 11:31:30 -0400
Branch: REL_11_STABLE [b5c6776c1] 2023-03-29 11:31:30 -0400
-->
     <para>
      Fix dereference of dangling pointer during buffering build of a GiST
      index (Alexander Lakhin)
      <ulink url="&commit_baseurl;2adb6adad">&sect;</ulink>
     </para>

     <para>
      This error seems to usually be harmless in production builds, as the
      fetched value is noncritical; but in principle it could cause a
      server crash.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [adedf54e6] 2023-03-23 11:58:36 +0530
Branch: REL_15_STABLE [b6bf90edc] 2023-03-23 11:46:16 +0530
Branch: REL_14_STABLE [9dac02c77] 2023-03-23 11:32:22 +0530
Branch: REL_13_STABLE [be52fff91] 2023-03-23 11:21:13 +0530
Branch: REL_12_STABLE [0f2d4adbf] 2023-03-23 11:08:38 +0530
Branch: master [b797def59] 2023-03-21 09:47:21 +0530
Branch: REL_15_STABLE [3c12407f4] 2023-03-21 09:40:41 +0530
Branch: REL_14_STABLE [65ead7696] 2023-03-21 09:18:51 +0530
Branch: REL_13_STABLE [751d6676d] 2023-03-21 09:07:37 +0530
Branch: REL_12_STABLE [fc63e6ba8] 2023-03-21 08:50:23 +0530
Branch: REL_11_STABLE [4cdaea7a2] 2023-03-21 08:39:00 +0530
-->
     <para>
      Ignore dropped columns and generated columns during logical
      replication of an update or delete action (Onder Kalaci, Shi Yu)
      <ulink url="&commit_baseurl;be52fff91">&sect;</ulink>
      <ulink url="&commit_baseurl;751d6676d">&sect;</ulink>
     </para>

     <para>
      Replication with the <literal>REPLICA IDENTITY FULL</literal> option
      failed if the table contained such columns.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [58f5edf84] 2023-05-05 21:25:44 +0900
Branch: REL_15_STABLE [d31dab9a5] 2023-05-05 21:25:50 +0900
Branch: REL_14_STABLE [ae4ffa722] 2023-05-05 21:25:56 +0900
Branch: REL_13_STABLE [cedcc4191] 2023-05-05 21:26:02 +0900
-->
     <para>
      Correct the name of the wait event for SLRU buffer I/O for commit
      timestamps (Alexander Lakhin)
      <ulink url="&commit_baseurl;cedcc4191">&sect;</ulink>
     </para>

     <para>
      This wait event is named <literal>CommitTsBuffer</literal> according
      to the documentation, but the code had it
      as <literal>CommitTSBuffer</literal>.  Change the code to match the
      documentation, as that way is more consistent with the naming of
      related wait events.
     </para>
    </listitem>

    <listitem>
<!--
Author: Nathan Bossart <nathan@postgresql.org>
Branch: master [b72623671] 2023-04-27 14:31:17 -0700
Branch: REL_15_STABLE [c98b06e2f] 2023-04-27 14:31:33 -0700
Branch: REL_14_STABLE [137003036] 2023-04-27 14:32:40 -0700
Branch: REL_13_STABLE [be40dd63e] 2023-04-27 14:32:55 -0700
-->
     <para>
      Avoid possible underflow when calculating how many WAL segments to
      keep (Kyotaro Horiguchi)
      <ulink url="&commit_baseurl;be40dd63e">&sect;</ulink>
     </para>

     <para>
      This could result in not honoring <varname>wal_keep_size</varname>
      accurately.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [9244c11af] 2023-02-15 10:12:16 +0900
Branch: REL_15_STABLE [5fd61055e] 2023-02-15 10:12:31 +0900
Branch: REL_14_STABLE [864f80fea] 2023-02-15 10:12:33 +0900
Branch: REL_13_STABLE [2eb8e54cc] 2023-02-15 10:12:36 +0900
Branch: REL_12_STABLE [a40e7b75e] 2023-02-15 10:12:38 +0900
Branch: REL_11_STABLE [88d606f7c] 2023-02-15 10:12:40 +0900
-->
     <para>
      Support RSA-PSS certificates with SCRAM-SHA-256 channel binding
      (Jacob Champion, Heikki Linnakangas)
      <ulink url="&commit_baseurl;2eb8e54cc">&sect;</ulink>
     </para>

     <para>
      This feature requires building with OpenSSL 1.1.1 or newer.  Both
      the server and <application>libpq</application> are affected.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [d41a178b3] 2023-03-15 13:24:47 +1300
Branch: REL_15_STABLE [06066915d] 2023-03-15 13:25:56 +1300
Branch: REL_14_STABLE [9b6e0b9c3] 2023-03-15 13:30:58 +1300
Branch: REL_13_STABLE [9f1c64018] 2023-03-15 13:31:34 +1300
Branch: REL_12_STABLE [836288427] 2023-03-15 13:32:21 +1300
Branch: REL_11_STABLE [5ff8e69d8] 2023-03-15 13:32:41 +1300
Branch: master [6a9229da6] 2023-03-17 10:44:46 +1300
Branch: REL_15_STABLE [75e7378f6] 2023-03-17 10:45:20 +1300
Branch: REL_14_STABLE [00fc4b3a3] 2023-03-17 09:52:45 +1300
Branch: REL_13_STABLE [798dae9f6] 2023-03-17 09:54:03 +1300
Branch: REL_12_STABLE [6f508b8bc] 2023-03-17 09:54:51 +1300
Branch: REL_11_STABLE [9d6c34397] 2023-03-17 09:58:08 +1300
Branch: master [10b6745d3] 2023-03-17 14:44:12 +1300
Branch: REL_15_STABLE [e8a774d00] 2023-03-17 14:46:03 +1300
Branch: REL_14_STABLE [1c0d4affa] 2023-03-17 14:46:50 +1300
Branch: REL_13_STABLE [77a8133c9] 2023-03-17 14:47:16 +1300
Branch: REL_12_STABLE [8fcd1517f] 2023-03-17 14:47:38 +1300
Branch: REL_11_STABLE [b23f2a729] 2023-03-17 14:48:08 +1300
-->
     <para>
      Avoid race condition with process ID tracking on Windows (Thomas Munro)
      <ulink url="&commit_baseurl;9f1c64018">&sect;</ulink>
      <ulink url="&commit_baseurl;798dae9f6">&sect;</ulink>
      <ulink url="&commit_baseurl;77a8133c9">&sect;</ulink>
     </para>

     <para>
      The operating system could recycle a PID before the postmaster
      observed that that child process was gone.  This could lead to
      tracking more than one child with the same PID, resulting in
      confusion.
     </para>
    </listitem>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [d0460a31d] 2023-02-22 13:23:09 +0000
Branch: REL_15_STABLE [576b25bfd] 2023-02-22 13:24:51 +0000
Branch: REL_14_STABLE [482ab3e4f] 2023-02-22 13:26:20 +0000
Branch: REL_13_STABLE [906356cf6] 2023-02-22 13:27:29 +0000
Branch: REL_12_STABLE [52dbd9f84] 2023-02-22 13:28:30 +0000
Branch: REL_11_STABLE [83a54d966] 2023-02-22 13:29:39 +0000
-->
     <para>
      Add missing cases to <function>SPI_result_code_string()</function>
      (Dean Rasheed)
      <ulink url="&commit_baseurl;906356cf6">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [b3e184a5d] 2023-02-21 18:48:15 -0500
Branch: REL_15_STABLE [f6a55c1d5] 2023-02-21 18:47:46 -0500
Branch: REL_14_STABLE [dc44180f6] 2023-02-21 18:47:47 -0500
Branch: REL_13_STABLE [99e74cd23] 2023-02-21 18:47:47 -0500
Branch: REL_12_STABLE [463bef383] 2023-02-21 18:47:47 -0500
Branch: REL_11_STABLE [21bd818d0] 2023-02-21 18:47:47 -0500
-->
     <para>
      Fix erroneous Valgrind markings
      in <function>AllocSetRealloc()</function> (Karina Litskevich)
      <ulink url="&commit_baseurl;99e74cd23">&sect;</ulink>
     </para>

     <para>
      In the unusual case where the size of a large (&gt;8kB) palloc chunk
      is decreased, a Valgrind-aware build would mismark the defined-ness
      state of the memory released from the chunk, possibly causing
      incorrect results during Valgrind testing.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [7fe1aa991] 2023-02-22 15:24:18 +0100
Branch: REL_15_STABLE [949ac32e1] 2023-02-22 16:48:30 +0100
Branch: REL_14_STABLE [8b9cbd42b] 2023-02-22 16:25:45 +0100
Branch: REL_13_STABLE [4df581fa0] 2023-02-22 16:09:30 +0100
Branch: REL_12_STABLE [497f863f0] 2023-02-22 15:50:37 +0100
Branch: REL_11_STABLE [8de91ebf2] 2023-02-22 15:35:19 +0100
-->
     <para>
      Avoid assertion failure when decoding a transactional logical
      replication message (Tomas Vondra)
      <ulink url="&commit_baseurl;4df581fa0">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Jeff Davis <jdavis@postgresql.org>
Branch: master [c04c6c5d6] 2023-04-21 08:19:41 -0700
Branch: REL_15_STABLE [109363de0] 2023-04-21 08:20:17 -0700
Branch: REL_14_STABLE [dde926b0f] 2023-04-21 08:20:32 -0700
Branch: REL_13_STABLE [79a66c617] 2023-04-21 08:20:47 -0700
Branch: REL_12_STABLE [5bcb15b81] 2023-04-21 08:21:04 -0700
Branch: REL_11_STABLE [106a1bf82] 2023-04-21 08:21:18 -0700
-->
     <para>
      Avoid locale sensitivity when processing regular expression escapes
      (Jeff Davis)
      <ulink url="&commit_baseurl;79a66c617">&sect;</ulink>
     </para>

     <para>
      A backslash followed by a non-ASCII character could sometimes cause
      an assertion failure, depending on the prevailing locale.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [3e383f9b6] 2023-04-17 14:22:26 -0400
Branch: REL_15_STABLE [2207df7c3] 2023-04-17 14:22:06 -0400
Branch: REL_14_STABLE [72a914e9f] 2023-04-17 14:22:06 -0400
Branch: REL_13_STABLE [86874a6df] 2023-04-17 14:22:06 -0400
Branch: REL_12_STABLE [9b0c1f213] 2023-04-17 14:22:06 -0400
Branch: REL_11_STABLE [c796d7296] 2023-04-17 14:22:06 -0400
-->
     <para>
      Avoid trying to write an empty WAL record
      in <function>log_newpage_range()</function> when the last few pages
      in the specified range are empty (Matthias van de Meent)
      <ulink url="&commit_baseurl;86874a6df">&sect;</ulink>
     </para>

     <para>
      It is not entirely clear whether this case is reachable in released
      branches, but if it is then an assertion failure could occur.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [441ee1677] 2023-04-24 14:19:46 -0400
Branch: REL_15_STABLE [c1598d85f] 2023-04-24 14:19:46 -0400
Branch: REL_14_STABLE [2ba890ce7] 2023-04-24 14:19:46 -0400
Branch: REL_13_STABLE [bfa691087] 2023-04-24 14:19:46 -0400
Branch: REL_12_STABLE [ee71cad9a] 2023-04-24 14:19:46 -0400
-->
     <para>
      Fix session-lifespan memory leakage in <application>plpgsql</application>
      <literal>DO</literal> blocks that use cast expressions
      (Ajit Awekar, Tom Lane)
      <ulink url="&commit_baseurl;bfa691087">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [f47004add] 2023-04-29 13:06:44 -0400
Branch: REL_15_STABLE [ce9a1a3ea] 2023-04-29 13:06:44 -0400
Branch: REL_14_STABLE [1e868bb6c] 2023-04-29 13:06:44 -0400
Branch: REL_13_STABLE [ee24b5e79] 2023-04-29 13:06:44 -0400
Branch: REL_12_STABLE [900a8d526] 2023-04-29 13:06:44 -0400
Branch: REL_11_STABLE [ea96fbe77] 2023-04-29 13:06:44 -0400
-->
     <para>
      Tighten array dimensionality checks when converting Perl
      list structures to multi-dimensional SQL arrays (Tom Lane)
      <ulink url="&commit_baseurl;ee24b5e79">&sect;</ulink>
     </para>

     <para>
      <application>plperl</application> could misbehave when the nesting
      of sub-lists is inconsistent so that the data does not represent a
      rectangular array of values.  Such cases now produce errors, but
      previously they could result in a crash or garbage output.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [0553528e7] 2023-05-04 11:00:33 -0400
Branch: REL_15_STABLE [b7001c6b6] 2023-05-04 11:00:33 -0400
Branch: REL_14_STABLE [9d517339e] 2023-05-04 11:00:33 -0400
Branch: REL_13_STABLE [0e6354ed9] 2023-05-04 11:00:33 -0400
Branch: REL_12_STABLE [b7fcf3824] 2023-05-04 11:00:33 -0400
Branch: REL_11_STABLE [aa7e5e404] 2023-05-04 11:00:33 -0400
Branch: master [81eaaf65e] 2023-04-28 12:24:29 -0400
Branch: REL_15_STABLE [512c55522] 2023-04-28 12:24:29 -0400
Branch: REL_14_STABLE [a1d9aacc4] 2023-04-28 12:24:29 -0400
Branch: REL_13_STABLE [7dcd9998c] 2023-04-28 12:24:29 -0400
Branch: REL_12_STABLE [ff9203f46] 2023-04-28 12:24:29 -0400
Branch: REL_11_STABLE [b7c6af375] 2023-04-28 12:24:29 -0400
-->
     <para>
      Tighten array dimensionality checks when converting Python
      list structures to multi-dimensional SQL arrays (Tom Lane)
      <ulink url="&commit_baseurl;0e6354ed9">&sect;</ulink>
      <ulink url="&commit_baseurl;7dcd9998c">&sect;</ulink>
     </para>

     <para>
      <application>plpython</application> could misbehave when dealing
      with empty sub-lists, or when the nesting of sub-lists is
      inconsistent so that the data does not represent a rectangular array
      of values.  The former should result in an empty output array, and
      the latter in an error.  But some cases resulted in a crash, and
      others in unexpected output.
     </para>
    </listitem>

    <listitem>
<!--
Author: Nathan Bossart <nathan@postgresql.org>
Branch: master [57d005170] 2023-05-04 16:23:05 -0700
Branch: REL_15_STABLE [825ebc984] 2023-05-04 16:24:48 -0700
Branch: REL_14_STABLE [52c9cf323] 2023-05-04 16:25:05 -0700
Branch: REL_13_STABLE [800531846] 2023-05-04 16:26:00 -0700
Branch: REL_12_STABLE [24964394a] 2023-05-04 16:26:05 -0700
Branch: REL_11_STABLE [0af386b0f] 2023-05-04 16:26:11 -0700
-->
     <para>
      Fix unwinding of exception stack
      in <application>plpython</application> (Xing Guo)
      <ulink url="&commit_baseurl;800531846">&sect;</ulink>
     </para>

     <para>
      Some rare failure cases could return without cleaning up the PG_TRY
      exception stack, risking a crash if another error was raised before
      the next stack level was unwound.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [e0a09d4e3] 2023-03-13 16:36:20 +0900
Branch: REL_15_STABLE [4493256c5] 2023-03-13 16:36:28 +0900
Branch: REL_14_STABLE [7e319231c] 2023-03-13 16:36:31 +0900
Branch: REL_13_STABLE [96bef4374] 2023-03-13 16:36:33 +0900
Branch: REL_12_STABLE [2bc36a56c] 2023-03-13 16:36:34 +0900
-->
     <para>
      Fix inconsistent GSS-encryption error handling
      in <application>libpq</application>'s
      <function>PQconnectPoll()</function>
      (Michael Paquier)
      <ulink url="&commit_baseurl;96bef4374">&sect;</ulink>
     </para>

     <para>
      With <option>gssencmode</option> set to <literal>require</literal>,
      the connection was not marked dead after a GSS initialization
      failure.  Make it fail immediately, as the equivalent case for TLS
      encryption has long done.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [f18029084] 2023-04-18 11:20:41 +0900
Branch: REL_15_STABLE [8c746be44] 2023-04-18 11:20:47 +0900
Branch: REL_14_STABLE [02f076454] 2023-04-18 11:20:50 +0900
Branch: REL_13_STABLE [e9e457d22] 2023-04-18 11:20:51 +0900
Branch: REL_12_STABLE [a28bd7713] 2023-04-18 11:20:53 +0900
Branch: REL_11_STABLE [9eb44bb04] 2023-04-18 11:20:55 +0900
Branch: REL_11_STABLE [dbd25dd0b] 2023-04-18 12:00:31 +0900
-->
     <para>
      Fix possible data corruption in <application>ecpg</application>
      programs built with the <option>-C ORACLE</option> option
      (Kyotaro Horiguchi)
      <ulink url="&commit_baseurl;e9e457d22">&sect;</ulink>
     </para>

     <para>
      When <function>ecpg_get_data()</function> is called
      with <varname>varcharsize</varname> set to zero, it could write a
      terminating zero character into the last byte of the preceding
      field, truncating the data in that field.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [bc8cd50fe] 2023-03-17 13:31:40 -0400
Branch: REL_15_STABLE [2b216da1e] 2023-03-17 13:31:40 -0400
Branch: REL_14_STABLE [5fc1ac151] 2023-03-17 13:31:40 -0400
Branch: REL_13_STABLE [7e7c5b683] 2023-03-17 13:31:40 -0400
Branch: REL_12_STABLE [8f83ce8c5] 2023-03-17 13:31:40 -0400
Branch: REL_11_STABLE [012ffb365] 2023-03-17 13:31:40 -0400
-->
     <para>
      Fix <application>pg_dump</application> so that partitioned tables
      that are hash-partitioned on an enum-type column can be restored
      successfully (Tom Lane)
      <ulink url="&commit_baseurl;7e7c5b683">&sect;</ulink>
     </para>

     <para>
      Since the hash codes for enum values depend on the OIDs assigned to
      the enum, they are typically different after a dump and restore,
      meaning that rows often need to go into a different partition than
      they were in originally.  Users can work around that by specifying
      the <option>--load-via-partition-root</option> option; but since
      there is very little chance of success without that,
      teach <application>pg_dump</application> to apply it automatically
      to such tables.
     </para>

     <para>
      Also, fix <application>pg_restore</application> to not try
      to <command>TRUNCATE</command> target tables before restoring into
      them when <option>--load-via-partition-root</option> mode is used.
      This avoids a hazard of deadlocks and lost data.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [df38157d9] 2023-04-27 11:55:06 -0400
Branch: REL_15_STABLE [85ec8bcce] 2023-04-27 11:55:06 -0400
Branch: REL_14_STABLE [c74f88c40] 2023-04-27 11:55:06 -0400
Branch: REL_13_STABLE [de2dfa053] 2023-04-27 11:55:06 -0400
Branch: REL_12_STABLE [ce9662598] 2023-04-27 11:55:06 -0400
Branch: REL_11_STABLE [c3c1097dc] 2023-04-27 11:55:06 -0400
-->
     <para>
      In <filename>contrib/hstore_plpython</filename>, avoid crashing if
      the Python value to be transformed isn't a mapping (Dmitry Dolgov,
      Tom Lane)
      <ulink url="&commit_baseurl;de2dfa053">&sect;</ulink>
     </para>

     <para>
      This should give an error, but Python 3 changed some APIs in a way
      that caused the check to misbehave, allowing a crash to ensue.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
Branch: master [8bbd0cce9] 2023-04-23 14:30:09 +0300
Branch: REL_15_STABLE [214495dc5] 2023-04-23 14:30:51 +0300
Branch: REL_14_STABLE [f4a4a18ec] 2023-04-23 14:31:11 +0300
Branch: REL_13_STABLE [48c6825d0] 2023-04-23 14:00:16 +0300
-->
     <para>
      Require the <literal>siglen</literal> option of a GiST index on
      an <type>ltree</type> column, if specified, to be a multiple of 4
      (Alexander Korotkov)
      <ulink url="&commit_baseurl;48c6825d0">&sect;</ulink>
     </para>

     <para>
      Other values result in misaligned accesses to index content, which
      is harmless on Intel-compatible hardware but can cause a crash on
      some other architectures.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [1925ac281] 2023-03-11 12:15:41 -0500
Branch: REL_15_STABLE [6170386c7] 2023-03-11 12:15:41 -0500
Branch: REL_14_STABLE [786528039] 2023-03-11 12:15:41 -0500
Branch: REL_13_STABLE [bc436e4a9] 2023-03-11 12:15:41 -0500
Branch: REL_12_STABLE [1279414bc] 2023-03-11 12:15:41 -0500
Branch: REL_11_STABLE [b18327489] 2023-03-11 12:15:41 -0500
-->
     <para>
      Fix misbehavior in <filename>contrib/pg_trgm</filename> with an
      unsatisfiable regular expression (Tom Lane)
      <ulink url="&commit_baseurl;bc436e4a9">&sect;</ulink>
     </para>

     <para>
      A regex such as <literal>$foo</literal> is legal but unsatisfiable;
      the regex compiler recognizes that and produces an empty NFA graph.
      Attempting to optimize such a graph into a pg_trgm GIN or GiST index
      qualification resulted in accessing off the end of a work array,
      possibly leading to crashes.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [eab2d3147] 2023-04-20 18:12:32 -0400
Branch: REL_15_STABLE [a14afd3bd] 2023-04-20 18:12:48 -0400
Branch: REL_14_STABLE [6d60b718c] 2023-04-20 18:12:32 -0400
Branch: REL_13_STABLE [6dce37203] 2023-04-20 18:12:32 -0400
Branch: REL_12_STABLE [e2e34dfff] 2023-04-20 18:12:32 -0400
Branch: REL_11_STABLE [c976ccc9e] 2023-04-20 18:12:32 -0400
-->
     <para>
      Use the <option>--strip-unneeded</option> option when stripping
      static libraries with
      GNU-compatible <application>strip</application> (Tom Lane)
      <ulink url="&commit_baseurl;6dce37203">&sect;</ulink>
     </para>

     <para>
      Previously, <literal>make install-strip</literal> used
      the <option>-x</option> option in this case.  This change avoids
      misbehavior of <application>llvm-strip</application>, and gives
      slightly smaller output as well.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [969509c3f] 2023-02-08 17:15:25 -0500
Branch: REL_15_STABLE [2ee703c9d] 2023-02-08 17:15:23 -0500
Branch: REL_14_STABLE [7f8778fcf] 2023-02-08 17:15:23 -0500
Branch: REL_13_STABLE [c7b608600] 2023-02-08 17:15:23 -0500
Branch: REL_12_STABLE [11f1f9f4f] 2023-02-08 17:15:27 -0500
Branch: REL_11_STABLE [36a646d99] 2023-02-08 17:15:27 -0500
-->
     <para>
      Stop recommending auto-download of DTD files for building the
      documentation, and indeed disable it (Aleksander Alekseev, Peter
      Eisentraut, Tom Lane)
      <ulink url="&commit_baseurl;c7b608600">&sect;</ulink>
     </para>

     <para>
      It appears no longer possible to build the SGML documentation
      without a local installation of the DocBook DTD files.
      Formerly <application>xsltproc</application> could download those
      files on-the-fly from sourceforge.net; but sourceforge.net now
      permits only HTTPS access, and no common version
      of <application>xsltproc</application> supports that.  Hence, remove
      the bits of our documentation suggesting that that's possible or
      useful, and instead
      add <application>xsltproc</application>'s <option>--nonet</option>
      option to the build recipes.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [5d42a9751] 2023-05-05 07:09:52 +0200
Branch: REL_15_STABLE [3d37476f5] 2023-05-05 07:10:15 +0200
Branch: REL_14_STABLE [e07022500] 2023-05-05 07:10:30 +0200
Branch: REL_13_STABLE [670494477] 2023-05-05 07:11:58 +0200
Branch: REL_12_STABLE [14bb2e76c] 2023-05-05 07:12:18 +0200
Branch: REL_11_STABLE [b189f71e5] 2023-05-05 07:12:26 +0200
-->
     <para>
      When running TAP tests in PGXS builds, use a saner location for the
      temporary <filename>portlock</filename> directory (Peter Eisentraut)
      <ulink url="&commit_baseurl;670494477">&sect;</ulink>
     </para>

     <para>
      Place it under <filename>tmp_check</filename> in the build
      directory.  With the previous coding, a PGXS build would try to place
      it in the installation directory, which is not necessarily writable.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [4ddee4d9d] 2023-04-18 14:46:39 -0400
Branch: REL_15_STABLE [62b22caa5] 2023-04-18 14:46:39 -0400
Branch: REL_14_STABLE [b79b36f26] 2023-04-18 14:46:39 -0400
Branch: REL_13_STABLE [87d8ec3e4] 2023-04-18 14:46:39 -0400
Branch: REL_12_STABLE [2ad35cf06] 2023-04-18 14:46:39 -0400
Branch: REL_11_STABLE [7228f2f81] 2023-04-18 14:46:39 -0400
-->
     <para>
      Update time zone data files to <application>tzdata</application>
      release 2023c for DST law changes in Egypt, Greenland, Morocco, and
      Palestine. (Tom Lane)
      <ulink url="&commit_baseurl;87d8ec3e4">&sect;</ulink>
     </para>

     <para>
      When observing Moscow time, Europe/Kirov and Europe/Volgograd now
      use the abbreviations MSK/MSD instead of numeric abbreviations,
      for consistency with other timezones observing Moscow time.
      Also, America/Yellowknife is no longer distinct from America/Edmonton;
      this affects some pre-1948 timestamps in that area.
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-10">
  <title>Release 13.10</title>

  <formalpara>
  <title>Release date:</title>
  <para>2023-02-09</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.9.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.10</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you are upgrading from a version earlier than 13.7,
    see <xref linkend="release-13-7"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [71c37797d] 2023-02-06 11:20:07 +0900
Branch: REL_15_STABLE [715c345dd] 2023-02-06 11:20:20 +0900
Branch: REL_14_STABLE [626f2c1d6] 2023-02-06 11:20:23 +0900
Branch: REL_13_STABLE [45a945ee9] 2023-02-06 11:20:27 +0900
Branch: REL_12_STABLE [3f7342671] 2023-02-06 11:20:31 +0900
-->
     <para>
      <application>libpq</application> can leak memory contents after
      GSSAPI transport encryption initiation fails (Jacob Champion)
      <ulink url="&commit_baseurl;45a945ee9">&sect;</ulink>
     </para>

     <para>
      A modified server, or an unauthenticated man-in-the-middle, can
      send a not-zero-terminated error message during setup of GSSAPI
      (Kerberos) transport encryption.  <application>libpq</application>
      will then copy that string, as well as following bytes in
      application memory up to the next zero byte, to its error report.
      Depending on what the calling application does with the error
      report, this could result in disclosure of application memory
      contents.  There is also a small probability of a crash due to
      reading beyond the end of memory.  Fix by properly zero-terminating
      the server message.
      (CVE-2022-41862)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [3f7836ff6] 2023-01-05 14:12:17 -0500
Branch: REL_15_STABLE [3706cc97a] 2023-01-05 14:12:17 -0500
Branch: REL_14_STABLE [8cd190e13] 2023-01-05 14:12:17 -0500
Branch: REL_13_STABLE [ad38e2f89] 2023-01-05 14:12:17 -0500
Branch: master [3f244d020] 2023-01-15 13:14:52 -0500
Branch: REL_15_STABLE [a8f7687a0] 2023-01-15 14:06:46 -0500
Branch: REL_14_STABLE [a8b88c26f] 2023-01-15 14:06:46 -0500
Branch: REL_13_STABLE [787db4be9] 2023-01-15 14:06:46 -0500
-->
     <para>
      Fix calculation of which <literal>GENERATED</literal> columns need
      to be updated in child tables during an <command>UPDATE</command> on
      a partitioned table or inheritance tree (Amit Langote, Tom Lane)
      <ulink url="&commit_baseurl;ad38e2f89">&sect;</ulink>
      <ulink url="&commit_baseurl;787db4be9">&sect;</ulink>
     </para>

     <para>
      This fixes failure to update <literal>GENERATED</literal> columns
      that do not exist in the parent table, or that have different
      dependencies than are in the parent column's generation expression.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c9f7f9264] 2023-01-21 13:10:29 -0500
Branch: REL_15_STABLE [9e4288ce6] 2023-01-21 13:10:29 -0500
Branch: REL_14_STABLE [70ec756b0] 2023-01-21 13:10:29 -0500
Branch: REL_13_STABLE [72d611109] 2023-01-21 13:10:29 -0500
Branch: REL_12_STABLE [a5f3f2fce] 2023-01-21 13:10:30 -0500
Branch: REL_11_STABLE [6c122edde] 2023-01-21 13:10:30 -0500
-->
     <para>
      Allow <literal>REPLICA IDENTITY</literal>
      to be set on an index that's not (yet) valid (Tom Lane)
      <ulink url="&commit_baseurl;72d611109">&sect;</ulink>
     </para>

     <para>
      When <application>pg_dump</application> dumps a partitioned index
      that's marked <literal>REPLICA IDENTITY</literal>, it generates a
      command sequence that applies <literal>REPLICA IDENTITY</literal>
      before the partitioned index has been marked valid, causing restore
      to fail.  There seems no very good reason to prohibit doing it in
      that order, so allow it.  The marking will have no effect anyway
      until the index becomes valid.
     </para>
    </listitem>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [2605643a3] 2022-12-03 12:11:33 +0000
Branch: REL_15_STABLE [c67204db6] 2022-12-03 12:14:36 +0000
Branch: REL_14_STABLE [2c7ed9f75] 2022-12-03 12:16:07 +0000
Branch: REL_13_STABLE [3bed88123] 2022-12-03 12:17:47 +0000
Branch: REL_12_STABLE [33f600f04] 2022-12-03 12:18:58 +0000
Branch: REL_11_STABLE [30f9b03a0] 2022-12-03 12:20:02 +0000
-->
     <para>
      Fix handling of <literal>DEFAULT</literal> markers in rules that
      perform an <command>INSERT</command> from a
      multi-row <literal>VALUES</literal> list (Dean Rasheed)
      <ulink url="&commit_baseurl;3bed88123">&sect;</ulink>
     </para>

     <para>
      In some cases a <literal>DEFAULT</literal> marker would not get
      replaced with the proper default-value expression, leading to
      an <quote>unrecognized node type</quote> error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
Branch: master [3161ae86c] 2023-01-12 18:16:34 +0300
Branch: REL_15_STABLE [4dc3f94fa] 2023-01-12 18:17:43 +0300
Branch: REL_14_STABLE [0d9221f1d] 2023-01-12 18:18:04 +0300
Branch: REL_13_STABLE [2ff3ac3b5] 2023-01-12 18:18:31 +0300
Branch: REL_12_STABLE [9e24e4781] 2023-01-12 18:19:19 +0300
-->
     <para>
      Reject uses of undefined variables in <type>jsonpath</type>
      existence checks (Alexander Korotkov, David G. Johnston)
      <ulink url="&commit_baseurl;2ff3ac3b5">&sect;</ulink>
     </para>

     <para>
      While <type>jsonpath</type> match operators threw an error for an
      undefined variable in the path pattern, the existence operators
      silently treated it as a match.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [ffcf6f4cf] 2023-01-26 14:52:19 +1300
Branch: REL_15_STABLE [d9f5345bf] 2023-01-26 14:53:37 +1300
Branch: REL_14_STABLE [2f65b8468] 2023-01-26 14:54:17 +1300
Branch: REL_13_STABLE [1a5afe007] 2023-01-26 14:54:39 +1300
Branch: REL_12_STABLE [b55303792] 2023-01-26 14:55:03 +1300
Branch: REL_11_STABLE [d95dcc9ab] 2023-01-26 14:55:37 +1300
-->
     <para>
      Fix edge-case data corruption in parallel hash joins (Dmitry Astapov)
      <ulink url="&commit_baseurl;1a5afe007">&sect;</ulink>
     </para>

     <para>
      If the final chunk of a large tuple being written out to a temporary
      file was exactly 32760 bytes, it would be corrupted due to a
      fencepost bug.  The query would typically fail later with
      corrupted-data symptoms.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [7e8a80d1f] 2023-01-19 13:13:05 +0900
Branch: REL_15_STABLE [49e3a5e71] 2023-01-19 13:13:27 +0900
Branch: REL_14_STABLE [2e21e2857] 2023-01-19 13:13:28 +0900
Branch: REL_13_STABLE [fed4e92f3] 2023-01-19 13:13:30 +0900
Branch: REL_12_STABLE [162a48287] 2023-01-19 13:13:32 +0900
Branch: REL_11_STABLE [0c2f34af7] 2023-01-19 13:13:34 +0900
-->
     <para>
      Honor non-default settings
      of <varname>checkpoint_completion_target</varname>
      (Bharath Rupireddy)
      <ulink url="&commit_baseurl;fed4e92f3">&sect;</ulink>
     </para>

     <para>
      Internal state was not updated after a change
      in <varname>checkpoint_completion_target</varname>, possibly
      resulting in performing checkpoint I/O faster or slower than
      desired, especially if that setting was changed on-the-fly.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [44e9e3426] 2023-01-19 12:23:20 -0500
Branch: REL_15_STABLE [abe203304] 2023-01-19 12:23:20 -0500
Branch: REL_14_STABLE [103450724] 2023-01-19 12:23:20 -0500
Branch: REL_13_STABLE [1b9a0b96a] 2023-01-19 12:23:20 -0500
Branch: REL_12_STABLE [87591db19] 2023-01-19 12:23:20 -0500
Branch: REL_11_STABLE [0a269527f] 2023-01-19 12:23:20 -0500
-->
     <para>
      Log the correct ending timestamp
      in <varname>recovery_target_xid</varname> mode (Tom Lane)
      <ulink url="&commit_baseurl;1b9a0b96a">&sect;</ulink>
     </para>

     <para>
      When ending recovery based on the <varname>recovery_target_xid</varname>
      setting with <varname>recovery_target_inclusive</varname>
      = <literal>off</literal>, we printed an incorrect timestamp (always
      2000-01-01) in the <quote>recovery stopping before
      ... transaction</quote> log message.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [1561612e3] 2023-01-16 09:44:04 +0100
Branch: REL_15_STABLE [ac01fa647] 2023-01-16 09:45:03 +0100
Branch: REL_14_STABLE [f463335e1] 2023-01-16 09:48:09 +0100
Branch: REL_13_STABLE [cf74b6ead] 2023-01-16 09:54:15 +0100
-->
     <para>
      Improve error reporting for some buffered file read failures
      (Peter Eisentraut)
      <ulink url="&commit_baseurl;cf74b6ead">&sect;</ulink>
     </para>

     <para>
      Correctly report a short read, giving the numbers of bytes desired
      and actually read, instead of reporting an irrelevant error code.
      Most places got this right already, but some recently-written
      replication logic did not.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: REL_13_STABLE [72b6098be] 2023-01-11 09:56:14 +0900
Branch: REL_12_STABLE [c0ee6943c] 2023-01-11 09:56:18 +0900
-->
     <para>
      Prevent <quote>wrong tuple length</quote> failure
      at the end of <command>VACUUM</command> (Ashwin Agrawal, Junfeng Yang)
      <ulink url="&commit_baseurl;72b6098be">&sect;</ulink>
     </para>

     <para>
      This occurred if <command>VACUUM</command> needed to update the
      current database's <structfield>datfrozenxid</structfield> value and
      the database has so many granted privileges that
      its <structfield>datacl</structfield> value has been pushed
      out-of-line.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [20432f873] 2022-12-13 14:23:58 -0500
Branch: REL_15_STABLE [18431ee6f] 2022-12-13 14:23:59 -0500
Branch: REL_14_STABLE [ae47f8a96] 2022-12-13 14:23:59 -0500
Branch: REL_13_STABLE [942cc240f] 2022-12-13 14:23:59 -0500
Branch: REL_12_STABLE [1cca4a75f] 2022-12-13 14:23:59 -0500
Branch: REL_11_STABLE [f48aa5df4] 2022-12-13 14:23:59 -0500
-->
     <para>
      In extended query protocol, avoid an immediate commit
      after <command>ANALYZE</command> if we're running a pipeline
      (Tom Lane)
      <ulink url="&commit_baseurl;942cc240f">&sect;</ulink>
     </para>

     <para>
      If there's not been an explicit <command>BEGIN
      TRANSACTION</command>, <command>ANALYZE</command> would take it on
      itself to commit, which should not happen within a pipelined series
      of commands.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [e52daaabf] 2023-01-21 06:08:00 -0800
Branch: REL_15_STABLE [b152bb7b2] 2023-01-21 06:08:03 -0800
Branch: REL_14_STABLE [6900aea67] 2023-01-21 06:08:04 -0800
Branch: REL_13_STABLE [a9bccffe5] 2023-01-21 06:08:04 -0800
Branch: REL_12_STABLE [e75b5c855] 2023-01-21 06:08:04 -0800
Branch: REL_11_STABLE [8f70de7e0] 2023-01-21 06:08:05 -0800
-->
     <para>
      Reject cancel request packets having the wrong length
      (Andrey Borodin)
      <ulink url="&commit_baseurl;a9bccffe5">&sect;</ulink>
     </para>

     <para>
      The server would process a cancel request even if its length word
      was too small.  This led to reading beyond the end of the allocated
      buffer.  In theory that could cause a segfault, but it seems quite
      unlikely to happen in practice, since the buffer would have to be
      very close to the end of memory.  The more likely outcome was a bogus
      log message about wrong backend PID or cancel code.  Complain about
      the wrong length, instead.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [5beb7881f] 2022-12-22 10:35:02 -0500
Branch: REL_15_STABLE [1a3daa5bb] 2022-12-22 10:35:02 -0500
Branch: REL_14_STABLE [97431d673] 2022-12-22 10:35:02 -0500
Branch: REL_13_STABLE [4fceb454f] 2022-12-22 10:35:03 -0500
Branch: REL_12_STABLE [d572003f7] 2022-12-22 10:35:03 -0500
Branch: REL_11_STABLE [8cd700cc5] 2022-12-22 10:35:03 -0500
-->
     <para>
      Add recursion and looping defenses in subquery pullup (Tom Lane)
      <ulink url="&commit_baseurl;4fceb454f">&sect;</ulink>
     </para>

     <para>
      A contrived query can result in deep recursion and unreasonable
      amounts of time spent trying to flatten subqueries.  A proper fix
      for that seems unduly invasive for a back-patch, but we can at least
      add stack depth checks and an interrupt check to allow the query to
      be cancelled.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [fe12f2f8f] 2022-12-04 13:17:18 -0500
Branch: REL_15_STABLE [bf8fd64ff] 2022-12-04 13:17:18 -0500
Branch: REL_14_STABLE [ec3daeec3] 2022-12-04 13:17:18 -0500
Branch: REL_13_STABLE [4ebca555c] 2022-12-04 13:17:18 -0500
Branch: REL_12_STABLE [1ff549e84] 2022-12-04 13:17:18 -0500
Branch: REL_11_STABLE [2df073313] 2022-12-04 13:17:18 -0500
-->
     <para>
      Fix partitionwise-join code to tolerate failure to produce a plan for
      each partition (Tom Lane)
      <ulink url="&commit_baseurl;4ebca555c">&sect;</ulink>
     </para>

     <para>
      This could result in <quote>could not devise a query plan for the
      given query</quote> errors.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9c6ad5eaa] 2022-11-22 14:40:20 -0500
Branch: REL_15_STABLE [2debceed2] 2022-11-22 14:40:44 -0500
Branch: REL_14_STABLE [bd06fe4de] 2022-11-22 14:40:45 -0500
Branch: REL_13_STABLE [6e639267a] 2022-11-22 14:40:45 -0500
Branch: REL_12_STABLE [ec10b6139] 2022-11-22 14:40:45 -0500
Branch: REL_11_STABLE [b96a096db] 2022-11-22 14:40:46 -0500
-->
     <para>
      Limit the amount of cleanup work done
      by <function>get_actual_variable_range</function> (Simon Riggs)
      <ulink url="&commit_baseurl;6e639267a">&sect;</ulink>
     </para>

     <para>
      Planner runs occurring just after deletion of a large number of
      tuples appearing at the end of an index could expend significant
      amounts of work setting the <quote>killed</quote> bits for those
      index entries.  Limit the amount of work done in any one query by
      giving up on this process after examining 100 heap pages.  All the
      cleanup will still happen eventually, but without so large a
      performance hiccup.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [5644d6f90] 2022-11-21 17:07:29 -0500
Branch: REL_15_STABLE [0353db996] 2022-11-21 17:07:07 -0500
Branch: REL_14_STABLE [1b9c04b13] 2022-11-21 17:07:07 -0500
Branch: REL_13_STABLE [74670688f] 2022-11-21 17:07:07 -0500
Branch: REL_12_STABLE [1aed4c4fd] 2022-11-21 17:07:07 -0500
Branch: REL_11_STABLE [c0eed8891] 2022-11-21 17:07:07 -0500
-->
     <para>
      Ensure that execution of full-text-search queries can be cancelled
      while they are performing phrase matches (Tom Lane)
      <ulink url="&commit_baseurl;74670688f">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Jeff Davis <jdavis@postgresql.org>
Branch: master [edf12e7bb] 2022-12-01 11:49:15 -0800
Branch: REL_15_STABLE [9377b4f30] 2022-12-01 11:55:59 -0800
Branch: REL_14_STABLE [47e1224d5] 2022-12-01 11:53:53 -0800
Branch: REL_13_STABLE [a844052b5] 2022-12-01 11:52:06 -0800
Branch: REL_12_STABLE [f98c4fb1d] 2022-12-01 11:49:43 -0800
-->
     <para>
      Fix memory leak in hashing strings with nondeterministic collations
      (Jeff Davis)
      <ulink url="&commit_baseurl;a844052b5">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [bc54ef4ec] 2023-01-23 18:27:42 -0800
Branch: REL_15_STABLE [704a330a9] 2023-01-23 18:27:45 -0800
Branch: REL_14_STABLE [0a796b8b3] 2023-01-23 18:27:48 -0800
Branch: REL_13_STABLE [c5864805b] 2023-01-23 18:27:51 -0800
Branch: REL_12_STABLE [92fc12787] 2023-01-23 18:27:55 -0800
Branch: REL_11_STABLE [243373159] 2023-01-23 18:27:58 -0800
-->
     <para>
      Clean up the <application>libpq</application> connection object
      after a failed replication connection attempt (Andres Freund)
      <ulink url="&commit_baseurl;c5864805b">&sect;</ulink>
     </para>

     <para>
      The previous coding leaked the connection object.  In background
      code paths that's pretty harmless because the calling process will
      give up and exit.  But in commands such as <command>CREATE
      SUBSCRIPTION</command>, such a failure resulted in a small
      session-lifespan memory leak.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [8242752f9] 2022-11-29 15:43:17 -0500
Branch: REL_15_STABLE [55fa993d7] 2022-11-29 15:43:17 -0500
Branch: REL_14_STABLE [06998eab1] 2022-11-29 15:43:17 -0500
Branch: REL_13_STABLE [6e8ad1152] 2022-11-29 15:43:17 -0500
Branch: REL_12_STABLE [c4a153d77] 2022-11-29 15:43:17 -0500
Branch: REL_11_STABLE [a6c9e1db2] 2022-11-29 15:43:17 -0500
-->
     <para>
      In hot-standby servers, reduce processing effort for tracking XIDs
      known to be active on the primary (Simon Riggs, Michail Nikolaev)
      <ulink url="&commit_baseurl;6e8ad1152">&sect;</ulink>
     </para>

     <para>
      Insufficiently-aggressive cleanup of the KnownAssignedXids array
      could lead to poor performance, particularly
      when <varname>max_connections</varname> is set to a large value on
      the standby.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [0557e1770] 2022-11-22 10:56:07 +0100
Branch: REL_15_STABLE [1ad033df1] 2022-11-22 10:56:07 +0100
Branch: REL_14_STABLE [1b3ed7571] 2022-11-22 10:56:07 +0100
Branch: REL_13_STABLE [36eeb37cd] 2022-11-22 10:56:07 +0100
-->
     <para>
      Ignore invalidated logical-replication slots while determining
      oldest catalog xmin (Sirisha Chamarthi)
      <ulink url="&commit_baseurl;36eeb37cd">&sect;</ulink>
     </para>

     <para>
      A replication slot could prevent cleanup of dead tuples in the
      system catalogs even after it becomes invalidated due to
      exceeding <varname>max_slot_wal_keep_size</varname>.  Thus, failure
      of a replication consumer could lead to indefinitely-large catalog
      bloat.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: REL_15_STABLE [898ef41bf] 2022-11-25 09:38:03 +0530
Branch: REL_14_STABLE [9f2cc1a73] 2022-11-25 09:25:50 +0530
Branch: REL_13_STABLE [4ec157c15] 2022-11-25 09:15:31 +0530
Branch: REL_12_STABLE [aa9d916f6] 2022-11-25 09:00:15 +0530
Branch: REL_11_STABLE [9b788aafd] 2022-11-25 08:56:54 +0530
-->
     <para>
      Fix uninitialized-memory usage in logical decoding (Masahiko Sawada)
      <ulink url="&commit_baseurl;4ec157c15">&sect;</ulink>
     </para>

     <para>
      In certain cases, resumption of logical decoding could try to re-use
      XID data that had already been freed, leading to unpredictable
      behavior.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [e848be60b] 2022-11-14 10:43:33 +0530
Branch: REL_15_STABLE [e49e19181] 2022-11-14 10:32:47 +0530
Branch: REL_14_STABLE [9693f1900] 2022-11-14 10:22:28 +0530
Branch: REL_13_STABLE [20c223336] 2022-11-14 10:11:10 +0530
Branch: REL_12_STABLE [4dccccb37] 2022-11-14 10:01:14 +0530
Branch: REL_11_STABLE [1703033f8] 2022-11-14 09:52:06 +0530
-->
     <para>
      Avoid rare <quote>failed to acquire cleanup lock</quote> panic
      during WAL replay of hash-index page split operations (Robert Haas)
      <ulink url="&commit_baseurl;20c223336">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Jeff Davis <jdavis@postgresql.org>
Branch: master [d6a3dbe14] 2022-11-11 12:38:29 -0800
Branch: REL_15_STABLE [7bf713dd2] 2022-11-11 12:46:11 -0800
Branch: REL_14_STABLE [f893af496] 2022-11-11 12:46:22 -0800
Branch: REL_13_STABLE [58a45bb1d] 2022-11-11 12:46:34 -0800
Branch: REL_12_STABLE [7dd39e9e8] 2022-11-11 12:46:44 -0800
Branch: REL_11_STABLE [5eaf3e375] 2022-11-11 12:46:52 -0800
-->
     <para>
      Advance a heap page's LSN when setting its all-visible bit during
      WAL replay (Jeff Davis)
      <ulink url="&commit_baseurl;58a45bb1d">&sect;</ulink>
     </para>

     <para>
      Failure to do this left the page possibly different on standby
      servers than the primary, and violated some other expectations about
      when the LSN changes.  This seems only a theoretical hazard so
      far as <productname>PostgreSQL</productname> itself is concerned,
      but it could upset third-party tools.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL_14_STABLE [32d5a4974] 2022-11-17 16:54:30 -0500
Branch: REL_13_STABLE [9a299cf7c] 2022-11-17 16:54:30 -0500
Branch: REL_12_STABLE [e21856fd6] 2022-11-17 16:54:31 -0500
Branch: REL_11_STABLE [d4acf2eb9] 2022-11-17 16:54:31 -0500
-->
     <para>
      Prevent unsafe usage of a relation cache
      entry's <structfield>rd_smgr</structfield> pointer (Amul Sul)
      <ulink url="&commit_baseurl;9a299cf7c">&sect;</ulink>
     </para>

     <para>
      Remove various assumptions that <structfield>rd_smgr</structfield>
      would stay valid over a series of operations, by wrapping all uses
      of it in a function that will recompute it if needed.  This prevents
      bugs occurring when an unexpected cache flush occurs partway through
      such a series.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [f1821b58f] 2023-01-13 11:02:12 +1300
Branch: REL_15_STABLE [8a98523a5] 2023-01-13 11:02:00 +1300
Branch: REL_14_STABLE [547e60b83] 2023-01-13 10:57:29 +1300
Branch: REL_13_STABLE [c159b0383] 2023-01-13 10:54:49 +1300
Branch: REL_12_STABLE [bf388ab82] 2023-01-13 10:54:34 +1300
Branch: REL_11_STABLE [1b40710a8] 2023-01-13 10:54:20 +1300
-->
     <para>
      Fix latent buffer-overrun problem in <literal>WaitEventSet</literal>
      logic (Thomas Munro)
      <ulink url="&commit_baseurl;c159b0383">&sect;</ulink>
     </para>

     <para>
      The <function>epoll</function>-based
      and <function>kqueue</function>-based implementations could ask the
      kernel for too many events if the size of their internal buffer was
      different from the size of the caller's output buffer.  That case is
      not known to occur in released <productname>PostgreSQL</productname>
      versions, but this error is a hazard for external modules and future
      bug fixes.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [8c954168c] 2022-11-19 12:22:04 -0800
Branch: REL_15_STABLE [a0d35ebcc] 2022-11-19 12:33:11 -0800
Branch: REL_14_STABLE [fc4154286] 2022-11-19 12:33:14 -0800
Branch: REL_13_STABLE [c13667b51] 2022-11-19 12:36:33 -0800
Branch: REL_12_STABLE [4cbcb7ed8] 2022-11-19 12:36:48 -0800
Branch: REL_11_STABLE [140c80372] 2022-11-19 12:36:52 -0800
-->
     <para>
      Avoid nominally-undefined behavior when accessing shared memory in
      32-bit builds (Andres Freund)
      <ulink url="&commit_baseurl;c13667b51">&sect;</ulink>
     </para>

     <para>
      clang's undefined-behavior sanitizer complained about use of a
      pointer that was less aligned than it should be.  It's very unlikely
      that this would cause a problem in non-debug builds, but it's worth
      fixing for testing purposes.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [51dfaa0b0] 2022-11-29 10:52:44 -0500
Branch: REL_15_STABLE [556c0b913] 2022-11-29 10:52:44 -0500
Branch: REL_14_STABLE [0224646be] 2022-11-29 10:52:44 -0500
Branch: REL_13_STABLE [aca695fb6] 2022-11-29 10:52:44 -0500
Branch: REL_12_STABLE [bb8d48cb9] 2022-11-29 10:52:44 -0500
-->
     <para>
      Remove faulty assertion in useless-RESULT-RTE optimization logic
      (Tom Lane)
      <ulink url="&commit_baseurl;aca695fb6">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [2fcf685f6] 2022-12-23 10:04:18 +0900
Branch: REL_15_STABLE [e3897a3a4] 2022-12-23 10:04:30 +0900
Branch: REL_14_STABLE [7ad458e06] 2022-12-23 10:04:33 +0900
Branch: REL_13_STABLE [4dbe72d61] 2022-12-23 10:04:34 +0900
Branch: REL_12_STABLE [7445869e1] 2022-12-23 10:04:36 +0900
Branch: REL_11_STABLE [df6fea51f] 2022-12-23 10:04:37 +0900
-->
     <para>
      Fix copy-and-paste errors in cache-lookup-failure messages for ACL
      checks (Justin Pryzby)
      <ulink url="&commit_baseurl;4dbe72d61">&sect;</ulink>
     </para>

     <para>
      In principle these errors should never be reached.  But if they are,
      some of them reported the wrong type of object.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL_14_STABLE [55f30e6c7] 2022-11-19 11:40:30 -0500
Branch: REL_13_STABLE [e46e986ba] 2022-11-19 11:40:30 -0500
Branch: REL_12_STABLE [344b78492] 2022-11-19 11:40:30 -0500
Branch: REL_11_STABLE [b1f106420] 2022-11-19 11:40:30 -0500
Branch: REL_14_STABLE [03ac48549] 2022-11-19 12:00:27 -0500
Branch: REL_13_STABLE [a5b26aaaf] 2022-11-19 12:00:27 -0500
Branch: REL_12_STABLE [1ed6f1b91] 2022-11-19 12:00:27 -0500
Branch: REL_11_STABLE [b7333e826] 2022-11-19 12:00:27 -0500
-->
     <para>
      In <application>pg_dump</application>,
      avoid calling unsafe server functions before we have locks on the
      tables to be examined (Tom Lane, Gilles Darold)
      <ulink url="&commit_baseurl;e46e986ba">&sect;</ulink>
      <ulink url="&commit_baseurl;a5b26aaaf">&sect;</ulink>
     </para>

     <para>
      <application>pg_dump</application> uses certain server functions
      that can fail if examining a table that gets dropped concurrently.
      Avoid this type of failure by ensuring that we obtain access share
      lock before inquiring too deeply into a table's properties, and that
      we don't apply such functions to tables we don't intend to dump at
      all.
     </para>
    </listitem>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [e7a59094b] 2023-01-06 11:18:44 +0000
Branch: REL_15_STABLE [2daf4664c] 2023-01-06 11:16:53 +0000
Branch: REL_14_STABLE [48599a18d] 2023-01-06 11:15:22 +0000
Branch: REL_13_STABLE [2ad4abedf] 2023-01-06 11:13:34 +0000
Branch: REL_12_STABLE [274185d11] 2023-01-06 11:11:51 +0000
Branch: REL_11_STABLE [c54b88870] 2023-01-06 11:09:56 +0000
-->
     <para>
      Fix tab completion of <command>ALTER
      FUNCTION/PROCEDURE/ROUTINE</command> ... <command>SET
      SCHEMA</command> (Dean Rasheed)
      <ulink url="&commit_baseurl;2ad4abedf">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [701c881f7] 2022-12-21 17:51:50 -0500
Branch: REL_15_STABLE [b87037b37] 2022-12-21 17:51:50 -0500
Branch: REL_14_STABLE [f489b480f] 2022-12-21 17:51:50 -0500
Branch: REL_13_STABLE [d35f1d485] 2022-12-21 17:51:50 -0500
Branch: REL_12_STABLE [c8314d62a] 2022-12-21 17:51:50 -0500
Branch: REL_11_STABLE [0ff4056b8] 2022-12-21 17:51:50 -0500
-->
     <para>
      Fix <filename>contrib/seg</filename> to not crash or print garbage
      if an input number has more than 127 digits (Tom Lane)
      <ulink url="&commit_baseurl;d35f1d485">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: REL_13_STABLE [c304c069d] 2022-11-09 09:39:53 +0900
Branch: REL_12_STABLE [edb4ef48d] 2022-11-09 09:39:55 +0900
Branch: REL_11_STABLE [91723759e] 2022-11-09 09:39:57 +0900
Branch: REL_10_STABLE [8f5d4ee6c] 2022-11-09 09:39:58 +0900
Branch: REL9_6_STABLE [b2b988110] 2022-11-09 09:40:01 +0900
Branch: REL9_5_STABLE [40064e103] 2022-11-09 09:40:02 +0900
Branch: REL9_4_STABLE [0f5812df6] 2022-11-09 09:40:05 +0900
Branch: REL9_3_STABLE [a5171b880] 2022-11-09 09:40:06 +0900
Branch: REL9_2_STABLE [c58c0770a] 2022-11-09 09:40:09 +0900
-->
     <para>
      In <filename>contrib/sepgsql</filename>, avoid deprecation warnings
      with recent <application>libselinux</application> (Michael Paquier)
      <ulink url="&commit_baseurl;c304c069d">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL_15_STABLE [576506303] 2022-11-10 10:23:49 -0500
Branch: REL_14_STABLE [06dca17ad] 2022-11-10 10:23:49 -0500
Branch: REL_13_STABLE [0942acb73] 2022-11-10 10:23:49 -0500
Branch: REL_12_STABLE [cf0f465c0] 2022-11-10 10:23:49 -0500
-->
     <para>
      Fix build on Microsoft Visual Studio 2013 (Tom Lane)
      <ulink url="&commit_baseurl;0942acb73">&sect;</ulink>
     </para>

     <para>
      A previous patch supposed that all platforms of interest
      have <function>snprintf()</function>, but MSVC 2013 isn't quite
      there yet.  Revert to using <function>sprintf()</function> on that
      platform.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master [341f4e002] 2022-11-25 15:28:38 -0500
Branch: REL_15_STABLE [fed54fc9a] 2022-11-25 15:37:33 -0500
Branch: REL_14_STABLE [f76191fd9] 2022-11-25 15:37:33 -0500
Branch: REL_13_STABLE [9fe5cff14] 2022-11-25 15:37:33 -0500
Branch: REL_12_STABLE [171c7fffa] 2022-11-25 15:37:34 -0500
Branch: REL_11_STABLE [ae7c51213] 2022-11-25 15:37:34 -0500
-->
     <para>
      Fix compile failure in building PL/Perl with MSVC when using
      Strawberry Perl (Andrew Dunstan)
      <ulink url="&commit_baseurl;9fe5cff14">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master [ccc59a83c] 2022-11-27 09:03:22 -0500
Branch: REL_15_STABLE [b5d8fd418] 2022-11-27 09:18:14 -0500
Branch: REL_14_STABLE [f3f70b8de] 2022-11-27 09:18:20 -0500
Branch: REL_13_STABLE [68d89d80c] 2022-11-27 09:18:32 -0500
Branch: REL_12_STABLE [85565cbca] 2022-11-27 09:18:40 -0500
Branch: REL_11_STABLE [724dd5649] 2022-11-27 09:18:46 -0500
-->
     <para>
      Fix mismatch of PL/Perl built with MSVC versus a Perl library built
      with gcc (Andrew Dunstan)
      <ulink url="&commit_baseurl;68d89d80c">&sect;</ulink>
     </para>

     <para>
      Such combinations could previously fail with <quote>loadable library
      and perl binaries are mismatched</quote> errors.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [388e80132] 2022-12-29 12:47:29 -0800
Branch: REL_15_STABLE [c6e75e4c2] 2023-01-02 15:49:33 -0800
Branch: REL_14_STABLE [7b5dec760] 2023-01-02 15:50:00 -0800
Branch: REL_13_STABLE [ce073d014] 2023-01-02 15:50:33 -0800
Branch: REL_12_STABLE [f0e13802f] 2023-01-02 15:51:03 -0800
Branch: REL_11_STABLE [99f8bc335] 2023-01-02 15:51:05 -0800
-->
     <para>
      Suppress compiler warnings from Perl's header files (Andres Freund)
      <ulink url="&commit_baseurl;ce073d014">&sect;</ulink>
     </para>

     <para>
      Our preferred compiler options provoke warnings about constructs
      appearing in recent versions of Perl's header files.  When using
      <application>gcc</application>, we can suppress these warnings with
      a pragma.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL_15_STABLE [9a40a0311] 2023-01-20 11:58:12 -0500
Branch: REL_14_STABLE [21c058648] 2023-01-20 11:58:12 -0500
Branch: REL_13_STABLE [c78f109b8] 2023-01-20 11:58:12 -0500
Branch: REL_12_STABLE [6d066d56b] 2023-01-20 11:58:12 -0500
Branch: REL_11_STABLE [b69e9dfab] 2023-01-20 11:58:12 -0500
-->
     <para>
      Fix <application>pg_waldump</application> to build on compilers that
      don't discard unused static-inline functions (Tom Lane)
      <ulink url="&commit_baseurl;c78f109b8">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [758f44bc3] 2023-01-31 17:36:55 -0500
Branch: REL_15_STABLE [65f0d9d27] 2023-01-31 17:37:06 -0500
Branch: REL_14_STABLE [7e6154779] 2023-01-31 17:37:14 -0500
Branch: REL_13_STABLE [20d9da107] 2023-01-31 17:37:22 -0500
Branch: REL_12_STABLE [2c95d8776] 2023-01-31 17:37:28 -0500
Branch: REL_11_STABLE [7ddc428ef] 2023-01-31 17:37:34 -0500
-->
     <para>
      Update time zone data files to <application>tzdata</application>
      release 2022g for DST law changes in Greenland and Mexico,
      plus historical corrections for northern Canada, Colombia, and
      Singapore. (Tom Lane)
      <ulink url="&commit_baseurl;20d9da107">&sect;</ulink>
     </para>

     <para>
      Notably, a new timezone America/Ciudad_Juarez has been split off
      from America/Ojinaga.
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-9">
  <title>Release 13.9</title>

  <formalpara>
  <title>Release date:</title>
  <para>2022-11-10</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.8.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.9</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you are upgrading from a version earlier than 13.7,
    see <xref linkend="release-13-7"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [2dc2e4e31] 2022-09-30 19:37:00 -0400
Branch: REL_15_STABLE Release: REL_15_0 [2267085c1] 2022-09-30 19:36:46 -0400
Branch: REL_14_STABLE [b93d7e688] 2022-09-30 19:36:46 -0400
Branch: REL_13_STABLE [92941f264] 2022-09-30 19:36:46 -0400
Branch: REL_12_STABLE [e7bd2d671] 2022-09-30 19:36:46 -0400
Author: Jeff Davis <jdavis@postgresql.org>
Branch: master [163b0993a] 2022-09-22 11:04:00 -0700
Branch: REL_15_STABLE Release: REL_15_0 [dd6070bc8] 2022-09-22 11:04:36 -0700
Branch: REL_14_STABLE [21934612d] 2022-09-22 11:04:58 -0700
Branch: REL_13_STABLE [410c422b7] 2022-09-22 11:06:42 -0700
Branch: REL_12_STABLE [cab72f0fd] 2022-09-22 11:07:05 -0700
-->
     <para>
      Avoid rare PANIC during updates occurring concurrently
      with <command>VACUUM</command> (Tom Lane, Jeff Davis)
      <ulink url="&commit_baseurl;92941f264">&sect;</ulink>
      <ulink url="&commit_baseurl;410c422b7">&sect;</ulink>
     </para>

     <para>
      If a concurrent <command>VACUUM</command> sets the all-visible flag
      bit in a page that <command>UPDATE</command>
      or <command>DELETE</command> is in process of modifying, the
      updating command needs to clear that bit again; but some code paths
      failed to do so, ending in a PANIC exit and database restart.
     </para>

     <para>
      This is known to be possible in versions 14 and 15.  It may be only
      latent in previous branches.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Geoghegan <pg@bowt.ie>
Branch: REL_13_STABLE [43e409cea] 2022-09-05 11:20:05 -0700
Branch: REL_12_STABLE [7adc34832] 2022-09-05 11:20:03 -0700
Branch: REL_11_STABLE [a228cca46] 2022-09-05 11:20:01 -0700
Branch: REL_10_STABLE [cfe41f976] 2022-09-05 11:19:59 -0700
-->
     <para>
      Fix <command>VACUUM</command> to press on if an attempted page
      deletion in a btree index fails to find the page's parent downlink
      (Peter Geoghegan)
      <ulink url="&commit_baseurl;43e409cea">&sect;</ulink>
     </para>

     <para>
      Rather than throwing an error, just log the issue and continue
      without deleting the empty page.  Previously, a buggy operator class
      or corrupted index could indefinitely prevent completion of
      vacuuming of the index, eventually leading to transaction wraparound
      problems.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [b8f2687fd] 2022-10-11 18:24:14 -0400
Branch: REL_15_STABLE [07ce67698] 2022-10-11 18:24:14 -0400
Branch: REL_14_STABLE [3162bd95c] 2022-10-11 18:24:14 -0400
Branch: REL_13_STABLE [21e042b0b] 2022-10-11 18:24:14 -0400
Branch: REL_12_STABLE [abc510fa2] 2022-10-11 18:24:15 -0400
Branch: REL_11_STABLE [addde9bc6] 2022-10-11 18:24:15 -0400
Branch: REL_10_STABLE [23e2a06ac] 2022-10-11 18:24:15 -0400
-->
     <para>
      Fix handling of <literal>DEFAULT</literal> tokens that appear
      in a multi-row <literal>VALUES</literal> clause of an
      <command>INSERT</command> on an updatable view (Tom Lane)
      <ulink url="&commit_baseurl;21e042b0b">&sect;</ulink>
     </para>

     <para>
      This oversight could lead to <quote>cache lookup failed for
      type</quote> errors, or in older branches even to crashes.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [797e313dc] 2022-10-17 12:14:39 -0400
Branch: REL_15_STABLE [4a41a069e] 2022-10-17 12:14:39 -0400
Branch: REL_14_STABLE [2f26cec48] 2022-10-17 12:14:39 -0400
Branch: REL_13_STABLE [b21615d1e] 2022-10-17 12:14:39 -0400
Branch: REL_12_STABLE [65c1106d8] 2022-10-17 12:14:39 -0400
Branch: REL_11_STABLE [e9377e3e5] 2022-10-17 12:14:39 -0400
Branch: REL_10_STABLE [ecf4ce689] 2022-10-17 12:14:39 -0400
-->
     <para>
      Disallow rules named <literal>_RETURN</literal> that are
      not <literal>ON SELECT</literal> (Tom Lane)
      <ulink url="&commit_baseurl;b21615d1e">&sect;</ulink>
     </para>

     <para>
      This avoids confusion between a view's <literal>ON SELECT</literal>
      rule and any other rules it may have.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [216f9c1ab] 2022-09-25 17:10:58 -0400
Branch: REL_15_STABLE Release: REL_15_0 [c82766c02] 2022-09-25 17:10:58 -0400
Branch: REL_14_STABLE [992376461] 2022-09-25 17:10:58 -0400
Branch: REL_13_STABLE [8c17c8615] 2022-09-25 17:10:58 -0400
Branch: REL_12_STABLE [519763094] 2022-09-25 17:10:58 -0400
-->
     <para>
      Fix resource management bug in saving tuples
      for <literal>AFTER</literal> triggers (Tom Lane)
      <ulink url="&commit_baseurl;8c17c8615">&sect;</ulink>
     </para>

     <para>
      Given the right circumstances, this manifested as a <quote>tupdesc
      reference <replaceable>NNNN</replaceable> is not owned by resource
      owner</quote> error followed by a PANIC exit.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL_13_STABLE [3f7323cbb] 2022-08-27 12:11:20 -0400
Branch: REL_12_STABLE [f8e70cfb8] 2022-08-27 12:11:20 -0400
Branch: REL_11_STABLE [d9ebc582f] 2022-08-27 12:11:20 -0400
Branch: REL_10_STABLE [e1ea6f374] 2022-08-27 12:11:20 -0400
Branch: REL_13_STABLE [18f51083c] 2022-09-02 14:54:40 -0400
Branch: REL_12_STABLE [df92bc115] 2022-09-02 14:54:40 -0400
Branch: REL_11_STABLE [56dc44244] 2022-09-02 14:54:40 -0400
Branch: REL_10_STABLE [42d0d46f9] 2022-09-02 14:54:41 -0400
Branch: REL_13_STABLE [ccbb54c72] 2022-09-06 16:38:18 -0400
Branch: REL_12_STABLE [4d7c0fe51] 2022-09-06 16:38:18 -0400
Branch: REL_11_STABLE [9bcf6fb28] 2022-09-06 16:38:18 -0400
Branch: REL_10_STABLE [174c929e3] 2022-09-06 16:38:18 -0400
-->
     <para>
      Repair rare failure of MULTIEXPR_SUBLINK subplans in inherited
      updates (Tom Lane)
      <ulink url="&commit_baseurl;3f7323cbb">&sect;</ulink>
      <ulink url="&commit_baseurl;18f51083c">&sect;</ulink>
      <ulink url="&commit_baseurl;ccbb54c72">&sect;</ulink>
     </para>

     <para>
      Use of the syntax <literal>UPDATE tab SET (c1, ...) = (SELECT
      ...)</literal> with an inherited or partitioned target table could
      result in failure if the child tables are sufficiently dissimilar.
      This typically manifested as failure of consistency checks in the
      executor; but a crash or incorrect data updates are also possible.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [b0284bfb1] 2022-11-03 20:40:21 +0100
Branch: REL_15_STABLE [c301e1c0c] 2022-11-03 20:40:21 +0100
Branch: REL_14_STABLE [18865f4df] 2022-11-03 20:40:21 +0100
Branch: REL_13_STABLE [41b6e7c9a] 2022-11-03 20:40:21 +0100
Branch: REL_12_STABLE [ab70b3a52] 2022-11-03 20:40:21 +0100
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [614a406b4] 2022-10-07 19:37:48 +0200
Branch: REL_15_STABLE Release: REL_15_0 [6083132ab] 2022-10-07 19:37:48 +0200
Branch: REL_14_STABLE [483d26930] 2022-10-07 19:37:48 +0200
Branch: REL_13_STABLE [7d520e68e] 2022-10-07 19:37:48 +0200
Branch: REL_12_STABLE [669803af0] 2022-10-07 19:37:48 +0200
-->
     <para>
      Fix construction of per-partition foreign key constraints while
      doing <command>ALTER TABLE ATTACH PARTITION</command>
      (Jehan-Guillaume de Rorthais, &Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;41b6e7c9a">&sect;</ulink>
      <ulink url="&commit_baseurl;7d520e68e">&sect;</ulink>
     </para>

     <para>
      Previously, incorrect or duplicate constraints could be constructed
      for the newly-added partition.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [e7936f8b3] 2022-09-08 13:17:02 +0200
Branch: REL_15_STABLE Release: REL_15_0 [ade2409b1] 2022-09-08 13:17:02 +0200
Branch: REL_14_STABLE [640c20d62] 2022-09-08 13:17:02 +0200
Branch: REL_13_STABLE [80ef25b1a] 2022-09-08 13:17:02 +0200
Branch: REL_12_STABLE [562e100ae] 2022-09-08 13:17:02 +0200
-->
     <para>
      Fix generation of constraint names for per-partition foreign key
      constraints (Jehan-Guillaume de Rorthais)
      <ulink url="&commit_baseurl;80ef25b1a">&sect;</ulink>
     </para>

     <para>
      If the initially-given name is already in use for some constraint of
      the partition, a new one is selected; but it wasn't being spelled as
      intended.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [e6dbb4848] 2022-08-18 12:12:03 -0400
Branch: REL_15_STABLE Release: REL_15_0 [2a42c1c51] 2022-08-18 12:12:03 -0400
Branch: REL_14_STABLE [3bfea5cbb] 2022-08-18 12:11:47 -0400
Branch: REL_13_STABLE [9f0073ef7] 2022-08-18 12:11:47 -0400
Branch: REL_12_STABLE [2cf16cd74] 2022-08-18 12:11:47 -0400
Branch: REL_11_STABLE [116f20f92] 2022-08-18 12:11:47 -0400
-->
     <para>
      Fix incorrect matching of index expressions and predicates when
      creating a partitioned index (Richard Guo, Tom Lane)
      <ulink url="&commit_baseurl;9f0073ef7">&sect;</ulink>
     </para>

     <para>
      While creating a partitioned index, we try to identify any existing
      indexes on the partitions that match the partitioned index, so that
      we can absorb those as child indexes instead of building new ones.
      Matching of expressions was not done right, so that a usable child
      index might be ignored, leading to creation of a duplicative index.
     </para>
    </listitem>

    <listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [6672d7913] 2022-08-29 11:07:37 -0400
Branch: REL_15_STABLE Release: REL_15_0 [eb29fa388] 2022-08-29 11:18:55 -0400
Branch: REL_14_STABLE [0e54a5e27] 2022-08-29 11:25:00 -0400
Branch: REL_13_STABLE [3f2701cda] 2022-08-29 11:30:17 -0400
Branch: REL_12_STABLE [3c0ef0832] 2022-08-29 11:55:49 -0400
Branch: REL_11_STABLE [002fba80e] 2022-08-29 12:06:30 -0400
Branch: REL_10_STABLE [0b3ff539d] 2022-08-29 12:21:50 -0400
-->
     <para>
      Prevent WAL corruption after a standby promotion (Dilip Kumar,
      Robert Haas)
      <ulink url="&commit_baseurl;3f2701cda">&sect;</ulink>
     </para>

     <para>
      When a <productname>PostgreSQL</productname> instance performing
      archive recovery (but not using standby mode) is promoted, and the
      last WAL segment that it attempted to read ended in a partial
      record, the instance would write an invalid WAL segment on the new
      timeline.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [56b662523] 2022-10-13 09:31:57 +0900
Branch: REL_15_STABLE [ca4070f2b] 2022-10-26 09:41:13 +0900
Branch: REL_14_STABLE [5a30d43fa] 2022-10-26 09:41:18 +0900
Branch: REL_13_STABLE [594b97509] 2022-10-26 09:41:22 +0900
Branch: REL_12_STABLE [51c24d9e2] 2022-10-26 09:41:26 +0900
Branch: REL_11_STABLE [341fba2a6] 2022-10-26 09:41:28 +0900
Branch: REL_10_STABLE [b02fc7df1] 2022-10-26 09:41:31 +0900
-->
     <para>
      Fix mis-ordering of WAL operations in fast insert path for GIN
      indexes (Matthias van de Meent, Zhang Mingli)
      <ulink url="&commit_baseurl;594b97509">&sect;</ulink>
     </para>

     <para>
      This mistake is not known to have any negative consequences within
      core <productname>PostgreSQL</productname>, but it did cause issues
      for some extensions.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [16b1fe003] 2022-10-20 08:49:48 +0530
Branch: REL_15_STABLE [64ff0fe4e] 2022-10-20 09:43:59 +0530
Branch: REL_14_STABLE [a592ed923] 2022-10-20 09:34:18 +0530
Branch: REL_13_STABLE [25f7be1ca] 2022-10-20 09:25:13 +0530
Branch: REL_12_STABLE [1bf4d9206] 2022-10-20 09:16:28 +0530
Branch: REL_11_STABLE [5f7076cb6] 2022-10-20 09:07:04 +0530
Branch: REL_10_STABLE [10ed7b9e4] 2022-10-20 08:58:11 +0530
Branch: REL_15_STABLE [343afa967] 2022-10-21 10:03:35 +0530
Branch: REL_14_STABLE [4fbe6096b] 2022-10-21 09:52:44 +0530
Branch: REL_13_STABLE [38dbaaf27] 2022-10-21 09:42:24 +0530
Branch: REL_12_STABLE [02600886c] 2022-10-21 09:32:21 +0530
Branch: REL_11_STABLE [216af69ae] 2022-10-21 09:22:20 +0530
-->
     <para>
      Fix bugs in logical decoding when replay starts from a point
      between the beginning of a transaction and the beginning of its
      subtransaction (Masahiko Sawada, Kuroda Hayato)
      <ulink url="&commit_baseurl;25f7be1ca">&sect;</ulink>
      <ulink url="&commit_baseurl;38dbaaf27">&sect;</ulink>
     </para>

     <para>
      These errors could lead to assertion failures in debug builds, and
      otherwise to memory leaks.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: REL_15_STABLE Release: REL_15_0 [272248a0c] 2022-08-11 09:56:49 +0530
Branch: REL_14_STABLE [68dcce247] 2022-08-11 09:45:04 +0530
Branch: REL_13_STABLE [547b96368] 2022-08-11 09:30:55 +0530
Branch: REL_12_STABLE [794460783] 2022-08-11 09:09:36 +0530
Branch: REL_11_STABLE [e721123b7] 2022-08-11 08:55:31 +0530
Branch: REL_10_STABLE [bf0718c13] 2022-08-11 08:45:20 +0530
-->
     <para>
      Prevent examining system catalogs with the wrong snapshot during
      logical decoding (Masahiko Sawada)
      <ulink url="&commit_baseurl;547b96368">&sect;</ulink>
     </para>

     <para>
      If decoding begins partway through a transaction that modifies
      system catalogs, the decoder may not recognize that, causing it to
      fail to treat that transaction as in-progress for catalog lookups.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [ce20f8b9f] 2022-10-21 12:57:18 +0530
Branch: REL_15_STABLE [10eaa9750] 2022-10-21 12:43:28 +0530
Branch: REL_14_STABLE [36fc013fa] 2022-10-21 12:33:47 +0530
Branch: REL_13_STABLE [1eed947f9] 2022-10-21 12:22:47 +0530
Branch: REL_12_STABLE [f7f82cf05] 2022-10-21 12:10:11 +0530
Branch: REL_11_STABLE [5c51afe23] 2022-10-21 12:08:14 +0530
Branch: REL_10_STABLE [61838d2dd] 2022-10-21 11:54:34 +0530
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [f972ec5c2] 2022-08-23 10:20:02 +0530
Branch: REL_15_STABLE Release: REL_15_0 [42681dffa] 2022-08-23 10:08:43 +0530
Branch: REL_14_STABLE [6d05d575b] 2022-08-23 09:24:51 +0530
Branch: REL_13_STABLE [4985a4591] 2022-08-23 09:10:28 +0530
Branch: REL_12_STABLE [9415873ae] 2022-08-23 08:51:20 +0530
Branch: REL_11_STABLE [51e9469a4] 2022-08-23 08:42:51 +0530
Branch: REL_10_STABLE [6b50433e8] 2022-08-23 08:39:31 +0530
-->
     <para>
      Accept interrupts in more places during logical decoding (Amit
      Kapila, Masahiko Sawada)
      <ulink url="&commit_baseurl;1eed947f9">&sect;</ulink>
      <ulink url="&commit_baseurl;4985a4591">&sect;</ulink>
     </para>

     <para>
      This ameliorates problems with slow shutdown of replication workers.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [be541efbf] 2022-11-02 12:29:39 -0400
Branch: REL_15_STABLE [414d29a82] 2022-11-02 12:29:39 -0400
Branch: REL_14_STABLE [a5b7821fc] 2022-11-02 12:29:39 -0400
Branch: REL_13_STABLE [4d3f7e75c] 2022-11-02 12:29:39 -0400
-->
     <para>
      Prevent attempts to replicate into a foreign-table partition in
      replication workers (Shi Yu, Tom Lane)
      <ulink url="&commit_baseurl;4d3f7e75c">&sect;</ulink>
     </para>

     <para>
      Although partitioned tables can have foreign tables as partitions,
      replicating into such a partition isn't currently supported.
      The logical replication worker process would crash if it was
      attempted.  Now, an error is thrown.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [0d5bd3a6c] 2022-08-16 15:25:41 +0530
Branch: REL_15_STABLE Release: REL_15_0 [76d257925] 2022-08-16 15:14:27 +0530
Branch: REL_14_STABLE [02f8d68af] 2022-08-16 14:51:42 +0530
Branch: REL_13_STABLE [1df86aac5] 2022-08-16 14:30:27 +0530
-->
     <para>
      Remove pointless check on replica identity setting of partitioned
      tables (Hou Zhijie)
      <ulink url="&commit_baseurl;1df86aac5">&sect;</ulink>
     </para>

     <para>
      What matters is the replica identity setting of the leaf partitions,
      so there's no need to throw error if it's not set on the parent.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [dea834938] 2022-11-03 12:02:14 -0400
Branch: REL_15_STABLE [f2dc7f9e3] 2022-11-03 12:01:57 -0400
Branch: REL_14_STABLE [2489c38cd] 2022-11-03 12:01:57 -0400
Branch: REL_13_STABLE [b00f342ea] 2022-11-03 12:01:57 -0400
Branch: REL_12_STABLE [d9ffccf8d] 2022-11-03 12:01:57 -0400
Branch: REL_11_STABLE [ed019b5ef] 2022-11-03 12:01:57 -0400
Branch: REL_10_STABLE [5f3cec77b] 2022-11-03 12:01:57 -0400
-->
     <para>
      Avoid crash after function syntax error in replication workers
      (Maxim Orlov, Anton Melnikov, Masahiko Sawada, Tom Lane)
      <ulink url="&commit_baseurl;b00f342ea">&sect;</ulink>
     </para>

     <para>
      If a syntax error occurred in a SQL-language or PL/pgSQL-language
      <command>CREATE FUNCTION</command> or <command>DO</command> command
      executed in a logical replication worker, the worker process would
      crash with a null pointer dereference or assertion failure.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [309857f9c] 2022-08-10 13:37:25 -0400
Branch: REL_15_STABLE Release: REL_15_0 [ad3e07c15] 2022-08-10 13:37:25 -0400
Branch: REL_14_STABLE [95bfadd4e] 2022-08-10 13:37:25 -0400
Branch: REL_13_STABLE [71caf3c4d] 2022-08-10 13:37:25 -0400
Branch: REL_12_STABLE [5b948b5c1] 2022-08-10 13:37:25 -0400
Branch: REL_11_STABLE [442dbd669] 2022-08-10 13:37:25 -0400
Branch: REL_10_STABLE [1446612c5] 2022-08-10 13:37:25 -0400
-->
     <para>
      Fix handling of read-write expanded datums that are passed to SQL
      functions (Tom Lane)
      <ulink url="&commit_baseurl;71caf3c4d">&sect;</ulink>
     </para>

     <para>
      If a non-inlined SQL function uses a parameter in more than one
      place, and one of those functions expects to be able to modify
      read-write datums in place, then later uses of the parameter would
      observe the wrong value.  (Within
      core <productname>PostgreSQL</productname>, the expanded-datum
      mechanism is only used for array and composite-type values; but
      extensions might use it for other structured types.)
     </para>
    </listitem>

    <listitem>
<!--
Author: Daniel Gustafsson <dgustafsson@postgresql.org>
Branch: master [8cb2a22bb] 2022-09-12 12:59:06 +0200
Branch: REL_15_STABLE Release: REL_15_0 [56d238846] 2022-09-12 12:59:06 +0200
Branch: REL_14_STABLE [13b8a1c19] 2022-09-12 12:59:06 +0200
Branch: REL_13_STABLE [eb8b84807] 2022-09-12 12:59:06 +0200
Branch: REL_12_STABLE [9ebfbd23b] 2022-09-12 12:59:06 +0200
-->
     <para>
      Fix type <type>circle</type>'s equality comparator to handle NaNs
      properly (Ranier Vilela)
      <ulink url="&commit_baseurl;eb8b84807">&sect;</ulink>
     </para>

     <para>
      If the left-hand circle had a floating-point NaN for its radius,
      it would be considered equal to a circle with the same center and
      any radius.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [1058555a5] 2022-08-31 10:42:05 -0400
Branch: REL_15_STABLE Release: REL_15_0 [61f6e5c23] 2022-08-31 10:42:05 -0400
Branch: REL_14_STABLE [e969f1ae2] 2022-08-31 10:42:05 -0400
Branch: REL_13_STABLE [f204ad3a2] 2022-08-31 10:42:05 -0400
Branch: REL_12_STABLE [a53e0ea78] 2022-08-31 10:42:05 -0400
Branch: REL_11_STABLE [f5aa855cd] 2022-08-31 10:42:05 -0400
Branch: REL_10_STABLE [cba393a10] 2022-08-31 10:42:05 -0400
-->
     <para>
      In Snowball dictionaries, don't try to stem excessively-long words
      (Olly Betts, Tom Lane)
      <ulink url="&commit_baseurl;f204ad3a2">&sect;</ulink>
     </para>

     <para>
      If the input word exceeds 1000 bytes, return it as-is after case
      folding, rather than trying to run it through the Snowball code.
      This restriction protects against a known
      recursion-to-stack-overflow problem in the Turkish stemmer, and it
      seems like good insurance against any other safety or performance
      issues that may exist in the Snowball stemmers.  Such a long string
      is surely not a word in any human language, so it's doubtful that
      the stemmer would have done anything desirable with it anyway.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a46621942] 2022-08-14 12:05:27 -0400
Branch: REL_15_STABLE Release: REL_15_0 [9ae484121] 2022-08-14 12:05:27 -0400
Branch: REL_14_STABLE [06602372b] 2022-08-14 12:05:27 -0400
Branch: REL_13_STABLE [9fe285f85] 2022-08-14 12:05:27 -0400
Branch: REL_12_STABLE [ee8a2f9d7] 2022-08-14 12:05:27 -0400
Branch: REL_11_STABLE [84f9691a1] 2022-08-14 12:05:27 -0400
Branch: REL_10_STABLE [d3cf15dfc] 2022-08-14 12:05:27 -0400
-->
     <para>
      Fix use-after-free hazard in string comparisons (Tom Lane)
      <ulink url="&commit_baseurl;9fe285f85">&sect;</ulink>
     </para>

     <para>
      Improper memory management in the string comparison functions
      could result in scribbling on no-longer-allocated buffers,
      potentially breaking things for whatever is using that memory
      now.  This would only happen with fairly long strings (more than
      1kB), and only if an ICU collation is in use.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [eec346611] 2022-10-17 11:35:23 -0400
Branch: REL_15_STABLE [2e3326929] 2022-10-17 11:35:23 -0400
Branch: REL_14_STABLE [8c611602b] 2022-10-17 11:35:23 -0400
Branch: REL_13_STABLE [62b263bf7] 2022-10-17 11:35:23 -0400
Branch: REL_12_STABLE [99b6b705d] 2022-10-17 11:35:23 -0400
-->
     <para>
      Add plan-time check for attempted access to a table that has no
      table access method (Tom Lane)
      <ulink url="&commit_baseurl;62b263bf7">&sect;</ulink>
     </para>

     <para>
      This prevents a crash in some catalog-corruption scenarios, for
      example use of a view whose <literal>ON SELECT</literal> rule is
      missing.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [18a4a620e] 2022-10-11 18:54:31 -0400
Branch: REL_15_STABLE [e7b4ff327] 2022-10-11 18:54:31 -0400
Branch: REL_14_STABLE [b10546ecf] 2022-10-11 18:54:31 -0400
Branch: REL_13_STABLE [744270137] 2022-10-11 18:54:31 -0400
Branch: REL_12_STABLE [8f98352b5] 2022-10-11 18:54:31 -0400
Branch: REL_11_STABLE [6c1de98ba] 2022-10-11 18:54:31 -0400
Branch: REL_10_STABLE [ab35b9dd7] 2022-10-11 18:54:31 -0400
-->
     <para>
      Prevent postmaster crash when shared-memory state is corrupted
      (Tom Lane)
      <ulink url="&commit_baseurl;744270137">&sect;</ulink>
     </para>

     <para>
      The postmaster process is supposed to survive and initiate a
      database restart if shared memory becomes corrupted, but one
      bit of code was being insufficiently cautious about that.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [f25bed380] 2022-08-24 13:02:19 -0400
Branch: REL_15_STABLE Release: REL_15_0 [3d3c05c70] 2022-08-24 13:02:19 -0400
Branch: REL_14_STABLE [444ec169a] 2022-08-24 13:01:40 -0400
Branch: REL_13_STABLE [2d1f1523c] 2022-08-24 13:01:40 -0400
Branch: REL_12_STABLE [599a487b0] 2022-08-24 13:01:40 -0400
Branch: REL_11_STABLE [310d734ef] 2022-08-24 13:01:40 -0400
Branch: REL_10_STABLE [f5157a9ac] 2022-08-24 13:01:40 -0400
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [e07ebd4b6] 2022-08-13 15:21:28 -0400
Branch: REL_15_STABLE Release: REL_15_0 [00ac61695] 2022-08-13 15:21:28 -0400
Branch: REL_14_STABLE [496ab1d6c] 2022-08-13 15:21:28 -0400
Branch: REL_13_STABLE [60f876317] 2022-08-13 15:21:28 -0400
Branch: REL_12_STABLE [ba516fb07] 2022-08-13 15:21:28 -0400
Branch: REL_11_STABLE [b744e13b0] 2022-08-13 15:21:28 -0400
Branch: REL_10_STABLE [362032f17] 2022-08-13 15:21:28 -0400
-->
     <para>
      Add some more defenses against recursion till stack overrun
      (Richard Guo, Tom Lane)
      <ulink url="&commit_baseurl;2d1f1523c">&sect;</ulink>
      <ulink url="&commit_baseurl;60f876317">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [55d9cd46f] 2022-08-13 17:00:32 -0400
Branch: REL_15_STABLE Release: REL_15_0 [aee954373] 2022-08-13 16:59:58 -0400
Branch: REL_14_STABLE [1dfc9193a] 2022-08-13 16:59:58 -0400
Branch: REL_13_STABLE [4878ea717] 2022-08-13 16:59:58 -0400
-->
     <para>
      Avoid misbehavior when choosing hash table size with very
      small <varname>work_mem</varname> and large tuples (Zhang Mingli)
      <ulink url="&commit_baseurl;4878ea717">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [1c1294be7] 2022-08-31 16:23:35 -0400
Branch: REL_15_STABLE Release: REL_15_0 [0c599e748] 2022-08-31 16:23:20 -0400
Branch: REL_14_STABLE [feec1b2d5] 2022-08-31 16:23:20 -0400
Branch: REL_13_STABLE [45f7152b9] 2022-08-31 16:23:20 -0400
Branch: REL_12_STABLE [8fc6b9635] 2022-08-31 16:23:20 -0400
Branch: REL_11_STABLE [cb9232d16] 2022-08-31 16:23:20 -0400
Branch: REL_10_STABLE [fd640dbb8] 2022-08-31 16:23:20 -0400
-->
     <para>
      Avoid long-term memory leakage in the autovacuum launcher process
      (Reid Thompson)
      <ulink url="&commit_baseurl;45f7152b9">&sect;</ulink>
     </para>

     <para>
      The lack of field reports suggests that this problem is only latent
      in pre-v15 branches; but it's not very clear why, so back-patch the
      fix anyway.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [bfd6b3bc4] 2022-09-16 13:23:01 -0400
Branch: REL_15_STABLE Release: REL_15_0 [b759bb671] 2022-09-16 13:23:01 -0400
Branch: REL_14_STABLE [56d45fdab] 2022-09-16 13:23:01 -0400
Branch: REL_13_STABLE [c18d946e2] 2022-09-16 13:23:01 -0400
Branch: REL_12_STABLE [b3b88d748] 2022-09-16 13:23:01 -0400
Branch: REL_11_STABLE [7391ab28a] 2022-09-16 13:23:01 -0400
-->
     <para>
      Improve <application>PL/pgSQL</application>'s ability to handle
      parameters declared as <type>RECORD</type> (Tom Lane)
      <ulink url="&commit_baseurl;c18d946e2">&sect;</ulink>
     </para>

     <para>
      Build a separate function cache entry for each concrete type passed
      to the <type>RECORD</type> parameter during a session, much as we do
      for polymorphic parameters.  This allows some usages to work that
      previously failed with errors such as <quote>type of parameter does
      not match that when preparing the plan</quote>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [bb9237a12] 2022-08-15 15:40:07 -0400
Branch: REL_15_STABLE Release: REL_15_0 [ef9f35964] 2022-08-15 15:40:07 -0400
Branch: REL_14_STABLE [d63a69157] 2022-08-15 15:40:07 -0400
Branch: REL_13_STABLE [e37e9a655] 2022-08-15 15:40:07 -0400
Branch: REL_12_STABLE [c19024d74] 2022-08-15 15:40:07 -0400
Branch: REL_11_STABLE [ee4a17e20] 2022-08-15 15:40:07 -0400
Branch: REL_10_STABLE [2a280832e] 2022-08-15 15:40:07 -0400
-->
     <para>
      Add missing guards for <literal>NULL</literal> connection pointer
      in <application>libpq</application> (Daniele Varrazzo, Tom Lane)
      <ulink url="&commit_baseurl;e37e9a655">&sect;</ulink>
     </para>

     <para>
      There's a convention that <application>libpq</application> functions
      should check for a NULL PGconn argument, and fail gracefully instead
      of crashing.  <function>PQflush()</function>
      and <function>PQisnonblocking()</function> didn't get that memo, so
      fix them.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [b7050e258] 2022-09-09 15:34:04 -0400
Branch: REL_15_STABLE Release: REL_15_0 [fbb54d742] 2022-09-09 15:34:04 -0400
Branch: REL_14_STABLE [be0b0528c] 2022-09-09 15:34:04 -0400
Branch: REL_13_STABLE [a6618842f] 2022-09-09 15:34:04 -0400
Branch: REL_12_STABLE [9fbc6d548] 2022-09-09 15:34:04 -0400
Branch: REL_11_STABLE [fe4e151d4] 2022-09-09 15:34:04 -0400
Branch: REL_10_STABLE [8fe26bca1] 2022-09-09 15:34:04 -0400
-->
     <para>
      In <application>ecpg</application>, fix omission of variable storage
      classes when multiple <type>varchar</type> or <type>bytea</type>
      variables are declared in the same declaration (Andrey Sokolov)
      <ulink url="&commit_baseurl;a6618842f">&sect;</ulink>
     </para>

     <para>
      For example, <application>ecpg</application>
      translated <literal>static varchar str1[10], str2[20],
      str3[30];</literal> in such a way that only <varname>str1</varname>
      was marked <literal>static</literal>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [1f0c4fa25] 2022-10-21 08:21:55 -0400
Branch: REL_15_STABLE [5c013e620] 2022-10-21 08:31:39 -0400
Branch: REL_14_STABLE [aaad8adb0] 2022-10-21 08:39:48 -0400
Branch: REL_13_STABLE [0bf2cd160] 2022-10-21 08:45:08 -0400
Branch: REL_12_STABLE [475e9daf3] 2022-10-21 08:59:26 -0400
Branch: REL_11_STABLE [38214dabd] 2022-10-21 09:05:57 -0400
Branch: REL_10_STABLE [ba58266eb] 2022-10-21 09:11:47 -0400
-->
     <para>
      Allow cross-platform tablespace relocation
      in <application>pg_basebackup</application> (Robert Haas)
      <ulink url="&commit_baseurl;0bf2cd160">&sect;</ulink>
     </para>

     <para>
      Allow the remote path in <option>--tablespace-mapping</option> to be
      either a Unix-style or Windows-style absolute path, since the source
      server could be on a different OS than the local system.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [495e73c20] 2022-11-01 12:48:01 -0400
Branch: REL_15_STABLE [8b0a5cf3f] 2022-11-01 12:48:01 -0400
Branch: REL_14_STABLE [0f2f5645a] 2022-11-01 12:48:01 -0400
Branch: REL_13_STABLE [a9fdb48b7] 2022-11-01 12:48:01 -0400
Branch: REL_12_STABLE [ca4c6764b] 2022-11-01 12:48:01 -0400
Branch: REL_11_STABLE [149e00192] 2022-11-01 12:48:01 -0400
Branch: REL_10_STABLE [56083ff30] 2022-11-01 12:48:01 -0400
-->
     <para>
      In <application>pg_stat_statements</application>, fix access to
      already-freed memory (zhaoqigui)
      <ulink url="&commit_baseurl;a9fdb48b7">&sect;</ulink>
     </para>

     <para>
      This occurred if <application>pg_stat_statements</application>
      tracked a <command>ROLLBACK</command> command issued via extended
      query protocol.  In debug builds it consistently led to an assertion
      failure.  In production builds there would often be no visible ill
      effect; but if the freed memory had already been reused, the likely
      result would be to store garbage for the query string.
     </para>
    </listitem>

    <listitem>
<!--
Author: Etsuro Fujita <efujita@postgresql.org>
Branch: master [9320cfdd0] 2022-09-14 18:45:00 +0900
Branch: REL_15_STABLE Release: REL_15_0 [64387c540] 2022-09-14 18:45:01 +0900
Branch: REL_14_STABLE [b53d104ae] 2022-09-14 18:45:03 +0900
Branch: REL_13_STABLE [6749d4e8c] 2022-09-14 18:45:04 +0900
Branch: REL_12_STABLE [87fd3c902] 2022-09-14 18:45:06 +0900
Branch: REL_11_STABLE [07d81d1e5] 2022-09-14 18:45:07 +0900
Branch: REL_10_STABLE [d4adff0e9] 2022-09-14 18:45:09 +0900
-->
     <para>
      In <application>postgres_fdw</application>, ensure that target lists
      constructed for EvalPlanQual plans will have all required columns
      (Richard Guo, Etsuro Fujita)
      <ulink url="&commit_baseurl;6749d4e8c">&sect;</ulink>
     </para>

     <para>
      This avoids <quote>variable not found in subplan target list</quote>
      errors in rare cases.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c4b6d218e] 2022-09-09 12:41:36 -0400
Branch: REL_15_STABLE Release: REL_15_0 [100a8ca2c] 2022-09-09 12:41:36 -0400
Branch: REL_14_STABLE [e55ccb3b1] 2022-09-09 12:41:36 -0400
Branch: REL_13_STABLE [a61095aa7] 2022-09-09 12:41:36 -0400
Branch: REL_12_STABLE [23fe89a61] 2022-09-09 12:41:36 -0400
Branch: REL_11_STABLE [4d3f54bd7] 2022-09-09 12:41:36 -0400
Branch: REL_10_STABLE [95028d9de] 2022-09-09 12:41:36 -0400
-->
     <para>
      Reject unwanted output from the platform's
      <function>uuid_create()</function> function (Nazir Bilal Yavuz)
      <ulink url="&commit_baseurl;a61095aa7">&sect;</ulink>
     </para>

     <para>
      The <application>uuid-ossp</application> module expects
      libc's <function>uuid_create()</function> to produce a version-1
      UUID, but recent NetBSD releases produce a version-4 (random) UUID
      instead.  Check for that, and complain if so.  Drop the
      documentation's claim that the NetBSD implementation is usable
      for <application>uuid-ossp</application>.
      (If a version-4 UUID is okay for your purposes, you don't
      need <application>uuid-ossp</application> at all; just
      use <function>gen_random_uuid()</function>.)
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: REL_14_STABLE [4f6d1cfd6] 2022-10-11 09:56:13 +0200
Branch: REL_13_STABLE [33d979aee] 2022-10-11 09:56:13 +0200
Branch: REL_12_STABLE [fa5c13178] 2022-10-11 09:56:13 +0200
Branch: REL_11_STABLE [dd8263873] 2022-10-11 09:56:13 +0200
Branch: REL_10_STABLE [8bf470527] 2022-10-11 09:56:13 +0200
-->
     <para>
      Include new Perl test modules in standard installations
      (&Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;33d979aee">&sect;</ulink>
     </para>

     <para>
      Add <filename>PostgreSQL/Test/Cluster.pm</filename> and
      <filename>PostgreSQL/Test/Utils.pm</filename> to the standard
      installation file set in pre-version-15 branches.  This is for the
      benefit of extensions that want to use newly-written test code in
      older branches.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [8acd8f869] 2022-08-30 17:28:37 -0400
Branch: REL_15_STABLE Release: REL_15_0 [529d8f373] 2022-08-30 17:28:55 -0400
Branch: REL_14_STABLE [464db4676] 2022-08-30 17:29:03 -0400
Branch: REL_13_STABLE [a94b019d4] 2022-08-30 17:29:08 -0400
Branch: REL_12_STABLE [68bfe36c5] 2022-08-30 17:29:13 -0400
Branch: REL_11_STABLE [6fd58ca77] 2022-08-30 17:29:17 -0400
Branch: REL_10_STABLE [5bed28e69] 2022-08-30 17:29:23 -0400
-->
     <para>
      On NetBSD, force dynamic symbol resolution at postmaster start
      (Andres Freund, Tom Lane)
      <ulink url="&commit_baseurl;a94b019d4">&sect;</ulink>
     </para>

     <para>
      This avoids a risk of deadlock in the dynamic linker on NetBSD 10.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [c2ae01f69] 2022-10-19 22:18:26 +1300
Branch: REL_15_STABLE [af64846e1] 2022-10-19 22:18:54 +1300
Branch: REL_14_STABLE [d033f8f8b] 2022-10-19 22:32:14 +1300
Branch: REL_13_STABLE [cf94cb586] 2022-10-19 22:38:58 +1300
Branch: REL_12_STABLE [aa34bc4e2] 2022-10-19 22:44:53 +1300
Branch: REL_11_STABLE [da3a6825e] 2022-10-19 22:49:25 +1300
-->
     <para>
      Fix incompatibilities with LLVM 15 (Thomas Munro, Andres Freund)
      <ulink url="&commit_baseurl;cf94cb586">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [1c72d82c2] 2022-11-02 17:37:29 -0400
Branch: REL_15_STABLE [a5737e765] 2022-11-02 17:37:26 -0400
Branch: REL_14_STABLE [058c7b5dd] 2022-11-02 17:37:26 -0400
Branch: REL_13_STABLE [c479492c0] 2022-11-02 17:37:26 -0400
Branch: REL_12_STABLE [5ecf836e9] 2022-11-02 17:37:26 -0400
Branch: REL_11_STABLE [a0f9be1f9] 2022-11-02 17:37:26 -0400
Branch: REL_10_STABLE [19cefebe7] 2022-11-02 17:37:26 -0400
-->
     <para>
      Allow use of <function>__sync_lock_test_and_set()</function> for
      spinlocks on any machine (Tom Lane)
      <ulink url="&commit_baseurl;c479492c0">&sect;</ulink>
     </para>

     <para>
      This eases porting to new machine architectures, at least if you're
      using a compiler that supports this GCC builtin function.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [717ec1aae] 2022-10-16 15:27:04 -0400
Branch: REL_15_STABLE [24c4c2617] 2022-10-16 15:27:04 -0400
Branch: REL_14_STABLE [18e60712d] 2022-10-16 15:27:04 -0400
Branch: REL_13_STABLE [bc7a40b42] 2022-10-16 15:27:04 -0400
Branch: REL_12_STABLE [3d7df87c4] 2022-10-16 15:27:04 -0400
Branch: REL_11_STABLE [6618c276b] 2022-10-16 15:27:04 -0400
Branch: REL_10_STABLE [02d074e3e] 2022-10-16 15:27:04 -0400
Branch: REL9_6_STABLE [9bfa043a1] 2022-10-16 15:27:04 -0400
Branch: REL9_5_STABLE [377b37cf7] 2022-10-16 15:27:04 -0400
Branch: REL9_4_STABLE [57dfb6ce6] 2022-10-16 15:27:04 -0400
Branch: REL9_3_STABLE [ee4c44014] 2022-10-16 15:27:04 -0400
Branch: REL9_2_STABLE [fec443414] 2022-10-16 15:27:04 -0400
-->
     <para>
      Rename symbol <literal>REF</literal> to <literal>REF_P</literal> to
      avoid compile failure on recent macOS (Tom Lane)
      <ulink url="&commit_baseurl;bc7a40b42">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [450ee7012] 2022-10-16 11:47:44 -0400
Branch: REL_15_STABLE [bd4b2926e] 2022-10-16 11:47:44 -0400
Branch: REL_14_STABLE [6fa431d84] 2022-10-16 11:47:44 -0400
Branch: REL_13_STABLE [a2acafc7b] 2022-10-16 11:47:44 -0400
Branch: REL_12_STABLE [d33ac1ec2] 2022-10-16 11:47:44 -0400
-->
     <para>
      Avoid using <function>sprintf</function>, to avoid compile-time
      deprecation warnings (Tom Lane)
      <ulink url="&commit_baseurl;a2acafc7b">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL_15_STABLE Release: REL_15_0 [f9a56e726] 2022-09-20 18:59:53 -0400
Branch: REL_14_STABLE [dcd7dbed5] 2022-09-20 18:59:53 -0400
Branch: REL_13_STABLE [43f72e0f7] 2022-09-20 18:59:53 -0400
Branch: REL_12_STABLE [52a5fd5b9] 2022-09-20 18:59:53 -0400
Branch: REL_11_STABLE [9afdf3950] 2022-09-20 18:59:53 -0400
Branch: REL_10_STABLE [4c5a29c0e] 2022-09-20 18:59:53 -0400
Branch: REL9_6_STABLE [ca8fd341e] 2022-09-20 18:59:53 -0400
Branch: REL9_5_STABLE [1b6986599] 2022-09-20 18:59:53 -0400
Branch: REL9_4_STABLE [7d5d3f05b] 2022-09-20 18:59:53 -0400
Branch: REL9_3_STABLE [8c8ee5c99] 2022-09-20 18:59:54 -0400
Branch: REL9_2_STABLE [5d3ce0d82] 2022-09-20 18:59:54 -0400
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [152c9f7b8] 2022-09-20 12:04:37 -0400
Branch: REL_15_STABLE Release: REL_15_0 [b7d9b0c26] 2022-09-20 12:04:37 -0400
Branch: REL_14_STABLE [2e124d857] 2022-09-20 12:04:37 -0400
Branch: REL_13_STABLE [ca3b730ba] 2022-09-20 12:04:37 -0400
Branch: REL_12_STABLE [f38a0bde2] 2022-09-20 12:04:37 -0400
Branch: REL_11_STABLE [6ae8aee0b] 2022-09-20 12:04:37 -0400
Branch: REL_10_STABLE [760308704] 2022-09-20 12:04:37 -0400
Branch: REL9_6_STABLE [85c077f9e] 2022-09-20 12:04:37 -0400
Branch: REL9_5_STABLE [612e79661] 2022-09-20 12:04:37 -0400
Branch: REL_14_STABLE [88c947cb5] 2022-09-21 13:52:38 -0400
Branch: REL_13_STABLE [db8e36682] 2022-09-21 13:52:38 -0400
Branch: REL_12_STABLE [9a2267bcf] 2022-09-21 13:52:38 -0400
Branch: REL_11_STABLE [bb8dbc9f2] 2022-09-21 13:52:38 -0400
Branch: REL_10_STABLE [9c69e2640] 2022-09-21 13:52:38 -0400
Branch: REL9_6_STABLE [c705646b7] 2022-09-21 13:52:38 -0400
Branch: REL9_5_STABLE [96e595124] 2022-09-21 13:52:38 -0400
Branch: REL9_4_STABLE [3c5a33a52] 2022-09-21 13:52:38 -0400
Branch: REL9_3_STABLE [bf2161234] 2022-09-21 13:52:38 -0400
Branch: REL9_2_STABLE [850cb88e4] 2022-09-21 13:52:38 -0400
-->
     <para>
      Silence assorted compiler warnings from clang 15 and later (Tom Lane)
      <ulink url="&commit_baseurl;43f72e0f7">&sect;</ulink>
      <ulink url="&commit_baseurl;ca3b730ba">&sect;</ulink>
      <ulink url="&commit_baseurl;db8e36682">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [e7c7605a7] 2022-11-01 17:08:28 -0400
Branch: REL_15_STABLE [c3d16eb3d] 2022-11-01 17:08:49 -0400
Branch: REL_14_STABLE [97bb80b1b] 2022-11-01 17:08:58 -0400
Branch: REL_13_STABLE [ebf48810b] 2022-11-01 17:09:04 -0400
Branch: REL_12_STABLE [ec9a000d8] 2022-11-01 17:09:09 -0400
Branch: REL_11_STABLE [b1cb77bdf] 2022-11-01 17:09:16 -0400
Branch: REL_10_STABLE [b3326a753] 2022-11-01 17:09:21 -0400
-->
     <para>
      Update time zone data files to <application>tzdata</application>
      release 2022f for DST law changes in Chile, Fiji, Iran, Jordan,
      Mexico, Palestine, and Syria, plus historical corrections for Chile,
      Crimea, Iran, and Mexico. (Tom Lane)
      <ulink url="&commit_baseurl;ebf48810b">&sect;</ulink>
     </para>

     <para>
      Also, the Europe/Kiev zone has been renamed to Europe/Kyiv.
      Also, the following zones have been merged into nearby,
      more-populous zones whose clocks have agreed with them since 1970:
      Antarctica/Vostok, Asia/Brunei,
      Asia/Kuala_Lumpur, Atlantic/Reykjavik, Europe/Amsterdam,
      Europe/Copenhagen, Europe/Luxembourg, Europe/Monaco, Europe/Oslo,
      Europe/Stockholm, Indian/Christmas, Indian/Cocos, Indian/Kerguelen,
      Indian/Mahe, Indian/Reunion, Pacific/Chuuk, Pacific/Funafuti,
      Pacific/Majuro, Pacific/Pohnpei, Pacific/Wake and Pacific/Wallis.
      (This indirectly affects zones that were already links to one of
      these: Arctic/Longyearbyen, Atlantic/Jan_Mayen, Iceland,
      Pacific/Ponape, Pacific/Truk, and Pacific/Yap.)  America/Nipigon,
      America/Rainy_River, America/Thunder_Bay, Europe/Uzhgorod, and
      Europe/Zaporozhye were also merged into nearby zones after
      discovering that their claimed post-1970 differences from those
      zones seem to have been errors.
      In all these cases, the previous zone name remains as an alias;
      but the actual data is that of the zone that was merged into.
     </para>

     <para>
      These zone mergers result in loss of pre-1970 timezone history for
      the merged zones, which may be troublesome for applications
      expecting consistency of <type>timestamptz</type> display.  As an
      example, the stored value <literal>1944-06-01 12:00 UTC</literal>
      would previously display as <literal>1944-06-01
      13:00:00+01</literal> if the Europe/Stockholm zone is selected, but
      now it will read out as <literal>1944-06-01 14:00:00+02</literal>.
     </para>

     <para>
      It is possible to build the time zone data files with options that
      will restore the older zone data, but that choice also inserts a lot
      of other old (and typically poorly-attested) zone data, resulting in
      more total changes from the previous release than accepting these
      upstream changes does.  <productname>PostgreSQL</productname> has
      chosen to ship the <productname>tzdb</productname> data
      as-recommended, and so far as we are aware most major operating
      system distributions are doing likewise.  However, if these changes
      cause significant problems for your application, a possible solution
      is to install a local build of the time zone data files using
      <productname>tzdb</productname>'s backwards-compatibility options
      (see their <literal>PACKRATDATA</literal>
      and <literal>PACKRATLIST</literal> options).
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-8">
  <title>Release 13.8</title>

  <formalpara>
  <title>Release date:</title>
  <para>2022-08-11</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.7.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.8</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you are upgrading from a version earlier than 13.7,
    see <xref linkend="release-13-7"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [b9b21acc7] 2022-08-08 11:12:31 -0400
Branch: REL_15_STABLE [cc7e0feba] 2022-08-08 11:12:31 -0400
Branch: REL_14_STABLE [5721da7e4] 2022-08-08 11:12:31 -0400
Branch: REL_13_STABLE [7e92f78ab] 2022-08-08 11:12:31 -0400
Branch: REL_12_STABLE [5579726bd] 2022-08-08 11:12:31 -0400
Branch: REL_11_STABLE [f52d2fbd8] 2022-08-08 11:12:31 -0400
Branch: REL_10_STABLE [5919bb5a5] 2022-08-08 11:12:31 -0400
-->
     <para>
      Do not let extension scripts replace objects not already belonging
      to the extension (Tom Lane)
      <ulink url="&commit_baseurl;7e92f78ab">&sect;</ulink>
     </para>

     <para>
      This change prevents extension scripts from doing <command>CREATE
      OR REPLACE</command> if there is an existing object that does not
      belong to the extension.  It also prevents <command>CREATE IF NOT
      EXISTS</command> in the same situation.  This prevents a form of
      trojan-horse attack in which a hostile database user could become
      the owner of an extension object and then modify it to compromise
      future uses of the object by other users.  As a side benefit, it
      also reduces the risk of accidentally replacing objects one did
      not mean to.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Sven Klemm for reporting this problem.
      (CVE-2022-2625)
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [9e4f914b5] 2022-07-28 08:40:06 +0200
Branch: REL_15_STABLE [8348413db] 2022-07-28 08:26:05 +0200
Branch: REL_14_STABLE [a3aacb7cb] 2022-07-28 08:26:05 +0200
Branch: REL_13_STABLE [9a7e26b9c] 2022-07-28 08:26:05 +0200
Branch: REL_12_STABLE [6d20f8c5a] 2022-07-28 08:26:05 +0200
Branch: REL_11_STABLE [5a10c262f] 2022-07-28 08:26:05 +0200
Branch: REL_10_STABLE [084318c33] 2022-07-28 08:26:05 +0200
Branch: master [59be1c942] 2022-07-29 12:50:47 +0200
Branch: REL_15_STABLE [798d64488] 2022-07-29 12:50:47 +0200
Branch: REL_14_STABLE [4d8d85740] 2022-07-29 12:50:47 +0200
Branch: REL_13_STABLE [7cfe688de] 2022-07-29 12:50:47 +0200
Branch: REL_12_STABLE [658e5d534] 2022-07-29 12:50:47 +0200
Branch: REL_11_STABLE [fcd72cf29] 2022-07-29 12:50:47 +0200
Branch: REL_10_STABLE [6ffaf75a8] 2022-07-29 12:50:47 +0200
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master [b998196bb] 2022-07-29 17:54:19 -0400
Branch: REL_15_STABLE [2eb3f167f] 2022-07-29 18:17:17 -0400
Branch: REL_14_STABLE [e90c4fc88] 2022-07-29 18:17:30 -0400
Branch: REL_13_STABLE [b76e136ce] 2022-07-29 18:17:36 -0400
Branch: REL_12_STABLE [4349a7615] 2022-07-29 18:17:42 -0400
Branch: REL_11_STABLE [3f9c20536] 2022-07-29 18:17:49 -0400
Branch: REL_10_STABLE [c308003d2] 2022-07-29 18:17:55 -0400
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [6c1c9f88a] 2022-08-06 15:52:10 +0200
Branch: REL_15_STABLE [6390bc740] 2022-08-06 15:52:10 +0200
Branch: REL_14_STABLE [9d5c96d9b] 2022-08-06 15:52:10 +0200
Branch: REL_13_STABLE [8c5d9ccca] 2022-08-06 15:52:10 +0200
Branch: REL_12_STABLE [782e5631e] 2022-08-06 15:52:10 +0200
Branch: REL_11_STABLE [772e6383d] 2022-08-06 15:52:10 +0200
Branch: REL_10_STABLE [ad0e08394] 2022-08-06 15:52:10 +0200
-->
     <para>
      Fix replay of <command>CREATE DATABASE</command> WAL
      records on standby servers
      (Kyotaro Horiguchi, Asim R Praveen, Paul Guo)
      <ulink url="&commit_baseurl;9a7e26b9c">&sect;</ulink>
      <ulink url="&commit_baseurl;7cfe688de">&sect;</ulink>
      <ulink url="&commit_baseurl;b76e136ce">&sect;</ulink>
      <ulink url="&commit_baseurl;8c5d9ccca">&sect;</ulink>
     </para>

     <para>
      Standby servers may encounter missing tablespace directories
      when replaying database-creation WAL records.  Prior to this
      patch, a standby would fail to recover in such a case;
      however, such directories could be legitimately missing.
      Create the tablespace (as a plain directory), then check that it
      has been dropped again once replay reaches a consistent state.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: REL_14_STABLE [961cab0a5] 2022-07-27 07:55:13 +0200
Branch: REL_13_STABLE [16e7a8fd8] 2022-07-27 07:55:13 +0200
Branch: REL_12_STABLE [ca347f543] 2022-07-27 07:55:12 +0200
Branch: REL_11_STABLE [258c89641] 2022-07-27 07:55:12 +0200
Branch: REL_10_STABLE [7bdbbb873] 2022-07-27 07:55:12 +0200
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [9d3444dcc] 2022-07-22 16:57:12 +1200
Branch: REL_15_STABLE [6d306ab73] 2022-07-22 16:57:36 +1200
Branch: REL_14_STABLE [fee0165fc] 2022-07-22 16:57:57 +1200
Branch: master [4fc6b6eef] 2022-07-28 14:26:12 +1200
Branch: REL_15_STABLE [fc4e5af30] 2022-07-28 14:27:28 +1200
Branch: REL_14_STABLE [5ad478c9d] 2022-07-28 14:27:06 +1200
-->
     <para>
      Support <quote>in place</quote> tablespaces
      (Thomas Munro, Michael Paquier, &Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;16e7a8fd8">&sect;</ulink>
     </para>

     <para>
      Normally a Postgres tablespace is a symbolic link to a directory on
      some other filesystem.  This change allows it to just be a plain
      directory.  While this has no use for separating tables onto
      different filesystems, it is a convenient setup for testing.
      Moreover, it is necessary to support the <command>CREATE
      DATABASE</command> replay fix, which transiently creates a missing
      tablespace as an <quote>in place</quote> tablespace.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master Release: REL_15_BR [00377b9a0] 2022-06-25 09:07:41 -0700
Branch: REL_14_STABLE [ace997386] 2022-06-25 09:07:44 -0700
Branch: REL_13_STABLE [8782ce49e] 2022-06-25 09:07:45 -0700
Branch: REL_12_STABLE [93731d549] 2022-06-25 09:07:45 -0700
Branch: REL_11_STABLE [6d49cc286] 2022-06-25 09:07:46 -0700
Branch: REL_10_STABLE [88b39e614] 2022-06-25 09:07:46 -0700
-->
     <para>
      Fix permissions checks in <command>CREATE INDEX</command> (Nathan
      Bossart, Noah Misch)
      <ulink url="&commit_baseurl;8782ce49e">&sect;</ulink>
     </para>

     <para>
      The fix for CVE-2022-1552 caused <command>CREATE INDEX</command> to
      apply the table owner's permissions while performing lookups of
      operator classes and other objects, where formerly the calling
      user's permissions were used.  This broke dump/restore scenarios,
      because <application>pg_dump</application> issues <command>CREATE
      INDEX</command> before re-granting permissions.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [f92944137] 2022-07-26 13:07:03 -0400
Branch: REL_15_STABLE [a0c632c1d] 2022-07-26 13:07:03 -0400
Branch: REL_14_STABLE [3e1297a63] 2022-07-26 13:07:03 -0400
Branch: REL_13_STABLE [6c193c2ac] 2022-07-26 13:07:03 -0400
Branch: REL_12_STABLE [968b89257] 2022-07-26 13:07:03 -0400
Branch: REL_11_STABLE [9e3e1ac45] 2022-07-26 13:07:03 -0400
Branch: REL_10_STABLE [964f42aa2] 2022-07-26 13:07:03 -0400
-->
     <para>
      In extended query protocol, force an immediate commit
      after <command>CREATE DATABASE</command> and other commands that
      can't run in a transaction block (Tom Lane)
      <ulink url="&commit_baseurl;6c193c2ac">&sect;</ulink>
     </para>

     <para>
      If the client does not send a Sync message immediately after such a
      command, but instead sends another command, any failure in that
      command would lead to rolling back the preceding command, typically
      leaving inconsistent state on-disk (such as a missing or extra
      database directory).  The mechanisms intended to prevent that
      situation turn out to work for multiple commands in a simple-Query
      message, but not for a series of extended-protocol messages.  To
      prevent inconsistency without breaking use-cases that work today,
      force an implicit commit after such commands.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master Release: REL_15_BR [adf6d5dfb] 2022-06-27 08:21:08 +0300
Branch: REL_14_STABLE [e24615a00] 2022-06-27 08:24:30 +0300
Branch: REL_13_STABLE [7ba325fd7] 2022-06-27 08:24:35 +0300
Branch: REL_12_STABLE [af530898e] 2022-06-27 08:24:36 +0300
Branch: REL_11_STABLE [b49889f3c] 2022-06-27 08:24:37 +0300
Branch: REL_10_STABLE [4822b4627] 2022-06-27 08:24:38 +0300
-->
     <para>
      Fix race condition when checking transaction visibility (Simon Riggs)
      <ulink url="&commit_baseurl;7ba325fd7">&sect;</ulink>
     </para>

     <para>
      <function>TransactionIdIsInProgress</function> could
      report <literal>false</literal> before the subject transaction is
      considered visible, leading to various misbehaviors.  The race
      condition window is normally very narrow, but use of synchronous
      replication makes it much wider, because the wait for a synchronous
      replica happens in that window.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_15_BR [1218780cc] 2022-06-10 10:35:57 -0400
Branch: REL_14_STABLE Release: REL_14_4 [77c1d92cb] 2022-06-10 10:35:57 -0400
Branch: REL_13_STABLE [254cd7f31] 2022-06-10 10:35:57 -0400
Branch: REL_12_STABLE [d3ef5c3ef] 2022-06-10 10:35:57 -0400
Branch: REL_11_STABLE [199aac8b2] 2022-06-10 10:35:57 -0400
-->
     <para>
      Fix queries in which a <quote>whole-row variable</quote> references
      the result of a function that returns a domain over composite type
      (Tom Lane)
      <ulink url="&commit_baseurl;254cd7f31">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_15_BR [79b58c6f6] 2022-05-12 11:31:46 -0400
Branch: REL_14_STABLE Release: REL_14_4 [ac51c9fba] 2022-05-12 11:31:46 -0400
Branch: REL_13_STABLE [b7579b25c] 2022-05-12 11:31:46 -0400
Branch: REL_12_STABLE [301b91c56] 2022-05-12 11:31:46 -0400
Branch: REL_11_STABLE [7f7f1750d] 2022-05-12 11:31:46 -0400
Branch: REL_10_STABLE [b53442f6f] 2022-05-12 11:31:46 -0400
-->
     <para>
      Fix <quote>variable not found in subplan target list</quote> planner
      error when pulling up a sub-<literal>SELECT</literal> that's
      referenced in a <literal>GROUPING</literal> function (Richard Guo)
      <ulink url="&commit_baseurl;b7579b25c">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [1aa8dad41] 2022-08-03 17:33:42 -0400
Branch: REL_15_STABLE [14168d57b] 2022-08-03 17:33:42 -0400
Branch: REL_14_STABLE [445b9020c] 2022-08-03 17:33:42 -0400
Branch: REL_13_STABLE [da4ed7588] 2022-08-03 17:33:42 -0400
Branch: master [cc1164799] 2022-08-04 11:11:33 -0400
Branch: REL_15_STABLE [11e7d626c] 2022-08-04 11:11:22 -0400
Branch: REL_14_STABLE [1a9ac8492] 2022-08-04 11:11:22 -0400
Branch: REL_13_STABLE [8d38ccafc] 2022-08-04 11:11:22 -0400
-->
     <para>
      Fix incorrect plans when sorting by an expression that contains a
      non-top-level set-returning function (Richard Guo, Tom Lane)
      <ulink url="&commit_baseurl;da4ed7588">&sect;</ulink>
      <ulink url="&commit_baseurl;8d38ccafc">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [94da73281] 2022-08-05 13:58:47 -0400
Branch: REL_15_STABLE [b6d147bcb] 2022-08-05 13:58:48 -0400
Branch: REL_14_STABLE [ea6c91696] 2022-08-05 13:58:48 -0400
Branch: REL_13_STABLE [c102d1106] 2022-08-05 13:58:49 -0400
Branch: master [4c81a50e5] 2022-08-05 15:57:46 -0400
Branch: REL_15_STABLE [6303df08f] 2022-08-05 15:57:46 -0400
Branch: REL_14_STABLE [b9243cada] 2022-08-05 15:57:46 -0400
Branch: REL_13_STABLE [476f9d533] 2022-08-05 15:57:46 -0400
-->
     <para>
      Avoid planner core dump with <literal><replaceable>constant</replaceable>
      = ANY(<replaceable>array</replaceable>)</literal> clauses when
      there are MCV-type extended statistics on
      the <replaceable>array</replaceable> variable (Tom Lane)
      <ulink url="&commit_baseurl;c102d1106">&sect;</ulink>
      <ulink url="&commit_baseurl;476f9d533">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [ec0925c22] 2022-08-05 09:47:26 +0200
Branch: REL_15_STABLE [e78fd9084] 2022-08-05 09:47:15 +0200
Branch: REL_14_STABLE [731d514ae] 2022-08-05 09:47:11 +0200
Branch: REL_13_STABLE [ab8556630] 2022-08-05 09:47:06 +0200
Branch: REL_12_STABLE [6e7b37264] 2022-08-05 09:47:02 +0200
Branch: REL_11_STABLE [ce8e06652] 2022-08-05 09:46:58 +0200
Branch: master [90a4b6413] 2022-08-05 11:55:52 +0200
Branch: REL_15_STABLE [aa242501a] 2022-08-05 11:55:52 +0200
Branch: REL_14_STABLE [6d9481cd0] 2022-08-05 11:55:52 +0200
Branch: REL_13_STABLE [d2a74621e] 2022-08-05 11:55:52 +0200
Branch: REL_12_STABLE [4ad4c1f41] 2022-08-05 11:55:52 +0200
Branch: REL_11_STABLE [91130dd31] 2022-08-05 11:55:52 +0200
-->
     <para>
      Fix <literal>ALTER TABLE ... ENABLE/DISABLE TRIGGER</literal> to
      handle recursion correctly for triggers on partitioned tables
      (&Aacute;lvaro Herrera, Amit Langote)
      <ulink url="&commit_baseurl;ab8556630">&sect;</ulink>
      <ulink url="&commit_baseurl;d2a74621e">&sect;</ulink>
     </para>

     <para>
      In certain cases, a <quote>trigger does not exist</quote> failure
      would occur because the command would try to adjust the trigger on a
      child partition that doesn't have it.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master [89a39d4a4] 2022-07-03 17:08:25 -0400
Branch: REL_15_STABLE [7d9bf589b] 2022-07-03 17:27:03 -0400
Branch: REL_14_STABLE [7fd43684f] 2022-07-03 17:16:11 -0400
Branch: REL_13_STABLE [03cefe814] 2022-07-03 17:16:58 -0400
Branch: REL_12_STABLE [2cf875a4b] 2022-07-03 17:17:08 -0400
-->
     <para>
      Improve syntax error messages for type <type>jsonpath</type>
      (Andrew Dunstan)
      <ulink url="&commit_baseurl;03cefe814">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_15_BR [bf4717b09] 2022-06-07 15:34:30 -0400
Branch: REL_14_STABLE Release: REL_14_4 [5c3b5f7db] 2022-06-07 15:34:30 -0400
Branch: REL_13_STABLE [a36196972] 2022-06-07 15:34:30 -0400
Branch: REL_12_STABLE [435251b85] 2022-06-07 15:34:30 -0400
Branch: REL_11_STABLE [d628ce048] 2022-06-07 15:34:30 -0400
Branch: REL_10_STABLE [fb646cbd5] 2022-06-07 15:34:30 -0400
-->
     <para>
      Prevent <function>pg_stat_get_subscription()</function> from
      possibly returning an extra row containing garbage values
      (Kuntal Ghosh)
      <ulink url="&commit_baseurl;a36196972">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [b24b2be11] 2022-07-20 09:57:01 +0900
Branch: REL_15_STABLE [0829cc43e] 2022-07-20 09:57:07 +0900
Branch: REL_14_STABLE [be2e842c8] 2022-07-20 09:53:37 +0900
Branch: REL_13_STABLE [162ade612] 2022-07-20 09:53:53 +0900
Branch: REL_12_STABLE [f0eb83f81] 2022-07-20 09:54:03 +0900
Branch: REL_11_STABLE [80c3ea918] 2022-07-20 09:54:10 +0900
Branch: REL_10_STABLE [2497d2b77] 2022-07-20 09:54:24 +0900
-->
     <para>
      Ensure that <function>pg_stop_backup()</function> cleans up session
      state properly (Fujii Masao)
      <ulink url="&commit_baseurl;162ade612">&sect;</ulink>
     </para>

     <para>
      This omission could lead to assertion failures or crashes later in
      the session.
     </para>
    </listitem>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [8d367a44d] 2022-07-07 13:08:08 +0100
Branch: REL_15_STABLE [ea9e59d70] 2022-07-07 13:08:06 +0100
Branch: REL_14_STABLE [8d8464445] 2022-07-07 13:08:03 +0100
Branch: REL_13_STABLE [f890223bc] 2022-07-07 13:08:00 +0100
Branch: REL_12_STABLE [f9c655d64] 2022-07-07 13:07:57 +0100
Branch: REL_11_STABLE [e88b1f1e2] 2022-07-07 13:07:54 +0100
Branch: REL_10_STABLE [8ace122d4] 2022-07-07 13:07:51 +0100
-->
     <para>
      Fix join alias matching in <literal>FOR [KEY] UPDATE/SHARE</literal>
      clauses (Dean Rasheed)
      <ulink url="&commit_baseurl;f890223bc">&sect;</ulink>
     </para>

     <para>
      In corner cases, a misleading error could be reported.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master Release: REL_15_BR [0fbf01120] 2022-05-18 20:28:31 +0200
Branch: REL_14_STABLE Release: REL_14_4 [94edb85d2] 2022-05-18 20:28:31 +0200
Branch: REL_13_STABLE [80656f00f] 2022-05-18 20:28:31 +0200
Branch: REL_12_STABLE [ade17703d] 2022-05-18 20:28:31 +0200
Branch: REL_11_STABLE [ba83de8ad] 2022-05-18 20:28:31 +0200
Branch: REL_10_STABLE [16cb7db34] 2022-05-18 20:28:31 +0200
Branch: master Release: REL_15_BR [62221ef18] 2022-05-18 23:19:53 +0200
Branch: REL_14_STABLE Release: REL_14_4 [e8b93c6e2] 2022-05-18 23:19:53 +0200
Branch: REL_13_STABLE [5139db556] 2022-05-18 23:19:53 +0200
Branch: REL_12_STABLE [0ebd20e20] 2022-05-18 23:19:53 +0200
Branch: REL_11_STABLE [50bf3157a] 2022-05-18 23:19:53 +0200
Branch: REL_10_STABLE [29d111518] 2022-05-18 23:19:53 +0200
-->
     <para>
      Avoid crashing if too many column aliases are attached to
      an <literal>XMLTABLE</literal> or <literal>JSON_TABLE</literal>
      construct (&Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;80656f00f">&sect;</ulink>
      <ulink url="&commit_baseurl;5139db556">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [fd96d14d9] 2022-07-29 13:31:10 -0400
Branch: REL_15_STABLE [e6e804aa2] 2022-07-29 13:31:11 -0400
Branch: REL_14_STABLE [8df167baa] 2022-07-29 13:30:50 -0400
Branch: REL_13_STABLE [ba2002d02] 2022-07-29 13:30:50 -0400
Branch: REL_12_STABLE [d79f00e82] 2022-07-29 13:30:50 -0400
Branch: REL_11_STABLE [8dea18372] 2022-07-29 13:30:50 -0400
Branch: REL_10_STABLE [e6a48014d] 2022-07-29 13:30:50 -0400
Branch: master [83f1793d6] 2022-08-01 12:22:35 -0400
Branch: REL_15_STABLE [adc3ae6eb] 2022-08-01 12:22:35 -0400
Branch: REL_14_STABLE [d947a8bd5] 2022-08-01 12:22:35 -0400
Branch: REL_13_STABLE [331f8b851] 2022-08-01 12:22:35 -0400
Branch: REL_12_STABLE [5d280bc89] 2022-08-01 12:22:35 -0400
Branch: REL_11_STABLE [51d8b52fc] 2022-08-01 12:22:35 -0400
Branch: REL_10_STABLE [d54fc7e67] 2022-08-01 12:22:35 -0400
-->
     <para>
      Reject <literal>ROW()</literal> expressions and functions
      in <literal>FROM</literal> that have too many columns (Tom Lane)
      <ulink url="&commit_baseurl;ba2002d02">&sect;</ulink>
      <ulink url="&commit_baseurl;331f8b851">&sect;</ulink>
     </para>

     <para>
      Cases with more than about 1600 columns are unsupported, and
      have always failed at execution.  However, it emerges that some
      earlier code could be driven to assertion failures or crashes by
      queries with more than 32K columns.  Add a parse-time check to
      prevent that.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_15_BR [c7461fc25] 2022-05-21 14:45:58 -0400
Branch: REL_14_STABLE Release: REL_14_4 [6f7eec119] 2022-05-21 14:45:58 -0400
Branch: REL_13_STABLE [fefd54631] 2022-05-21 14:45:58 -0400
Branch: REL_12_STABLE [bb2c04676] 2022-05-21 14:45:58 -0400
Branch: REL_11_STABLE [f3b8d7244] 2022-05-21 14:45:58 -0400
Branch: REL_10_STABLE [7686403b4] 2022-05-21 14:45:58 -0400
-->
     <para>
      When decompiling a view or rule, show a <command>SELECT</command>
      output column's <literal>AS "?column?"</literal> alias clause
      if it could be referenced elsewhere (Tom Lane)
      <ulink url="&commit_baseurl;fefd54631">&sect;</ulink>
     </para>

     <para>
      Previously, this auto-generated alias was always hidden; but there
      are corner cases where doing so results in a non-restorable view or
      rule definition.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [b9654cece] 2022-07-21 13:56:02 -0400
Branch: REL_15_STABLE [c1d1e8469] 2022-07-21 13:56:05 -0400
Branch: REL_14_STABLE [da9a28fd5] 2022-07-21 13:56:02 -0400
Branch: REL_13_STABLE [5b5d43513] 2022-07-21 13:56:02 -0400
Branch: REL_12_STABLE [b243092a6] 2022-07-21 13:56:02 -0400
Branch: REL_11_STABLE [1078742af] 2022-07-21 13:56:02 -0400
Branch: REL_10_STABLE [6bceacfe8] 2022-07-21 13:56:02 -0400
-->
     <para>
      Fix dumping of a view using a function in <literal>FROM</literal>
      that returns a composite type, when column(s) of the composite type
      have been dropped since the view was made (Tom Lane)
      <ulink url="&commit_baseurl;5b5d43513">&sect;</ulink>
     </para>

     <para>
      This oversight could lead to dump/reload
      or <application>pg_upgrade</application> failures, as the dumped
      view would have too many column aliases for the function.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master Release: REL_15_BR [602986191] 2022-05-20 18:52:55 +0200
Branch: REL_14_STABLE Release: REL_14_4 [58b088a9b] 2022-05-20 18:52:55 +0200
Branch: REL_13_STABLE [3753a169e] 2022-05-20 18:52:55 +0200
Branch: REL_12_STABLE [4492e73a6] 2022-05-20 18:52:55 +0200
Branch: REL_11_STABLE [6c6ea6ea8] 2022-05-20 18:52:55 +0200
Branch: REL_10_STABLE [70f70d7d3] 2022-05-20 18:52:55 +0200
Branch: REL_10_STABLE [8c47622bb] 2022-05-20 19:05:55 +0200
-->
     <para>
      Report implicitly-created operator families to event triggers
      (Masahiko Sawada)
      <ulink url="&commit_baseurl;3753a169e">&sect;</ulink>
     </para>

     <para>
      If <command>CREATE OPERATOR CLASS</command> results in the implicit
      creation of an operator family, that object was not reported to
      event triggers that should capture such events.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: REL_14_STABLE Release: REL_14_4 [6dced63b4] 2022-05-16 11:26:22 +0900
Branch: REL_13_STABLE [2e9559b30] 2022-05-16 11:26:26 +0900
Branch: REL_12_STABLE [7e59b1219] 2022-05-16 11:26:30 +0900
Branch: REL_11_STABLE [4525151d4] 2022-05-16 11:26:36 +0900
Branch: REL_10_STABLE [60e956eb8] 2022-05-16 11:26:41 +0900
-->
     <para>
      Fix control file updates made when a restartpoint is running during
      promotion of a standby server (Kyotaro Horiguchi)
      <ulink url="&commit_baseurl;2e9559b30">&sect;</ulink>
     </para>

     <para>
      Previously, when the restartpoint completed it could incorrectly
      update the last-checkpoint fields of the control file, potentially
      leading to PANIC and failure to restart if the server crashes before
      the next normal checkpoint completes.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master Release: REL_15_BR [f95d53ede] 2022-05-11 11:11:44 +0530
Branch: REL_14_STABLE Release: REL_14_4 [d6da71fa8] 2022-05-11 10:51:04 +0530
Branch: REL_13_STABLE [55558df23] 2022-05-11 10:41:24 +0530
Branch: REL_12_STABLE [f832b5007] 2022-05-11 10:25:56 +0530
Branch: REL_11_STABLE [87c1dd246] 2022-05-11 10:12:23 +0530
Branch: REL_10_STABLE [a4015ec03] 2022-05-11 10:01:35 +0530
-->
     <para>
      Prevent triggering of
      standby's <varname>wal_receiver_timeout</varname> during logical
      replication of large transactions (Wang Wei, Amit Kapila)
      <ulink url="&commit_baseurl;55558df23">&sect;</ulink>
     </para>

     <para>
      If a large transaction on the primary server sends no data to the
      standby (perhaps because no table it changes is published), it was
      possible for the standby to timeout.  Fix that by ensuring we send
      keepalive messages periodically in such situations.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [ee7964776] 2022-07-20 09:56:42 +0900
Branch: REL_15_STABLE [286793b98] 2022-07-20 09:56:52 +0900
Branch: REL_14_STABLE [2aedf25eb] 2022-07-20 09:52:11 +0900
Branch: REL_13_STABLE [5630f39b3] 2022-07-20 09:52:23 +0900
Branch: REL_12_STABLE [9fa00e312] 2022-07-20 09:52:29 +0900
Branch: REL_11_STABLE [87e504487] 2022-07-20 09:52:36 +0900
Branch: REL_10_STABLE [dd831afc4] 2022-07-20 09:52:43 +0900
-->
     <para>
      Disallow nested backup operations in logical replication walsenders
      (Fujii Masao)
      <ulink url="&commit_baseurl;5630f39b3">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master Release: REL_15_BR [ac0e2d387] 2022-06-23 09:23:46 +0530
Branch: REL_14_STABLE [3238b5c33] 2022-06-23 09:20:41 +0530
Branch: REL_13_STABLE [3a6ef0cdf] 2022-06-23 09:02:16 +0530
Branch: REL_12_STABLE [9e0d9a24e] 2022-06-23 08:47:15 +0530
Branch: REL_11_STABLE [ed2a7a6bf] 2022-06-23 08:37:40 +0530
Branch: REL_10_STABLE [d873b5a5a] 2022-06-23 08:26:56 +0530
-->
     <para>
      Fix memory leak in logical replication subscribers (Hou Zhijie)
      <ulink url="&commit_baseurl;3a6ef0cdf">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master Release: REL_15_BR [26b3455af] 2022-06-21 08:07:43 +0530
Branch: REL_14_STABLE [52d5ea9ad] 2022-06-21 08:03:30 +0530
Branch: REL_13_STABLE [5f113d60e] 2022-06-21 08:05:31 +0530
Branch: master Release: REL_15_BR [75bfe7434] 2022-06-21 15:39:35 +0530
Branch: REL_14_STABLE [f0022a77d] 2022-06-21 15:30:36 +0530
Branch: REL_13_STABLE [419c72715] 2022-06-21 15:12:52 +0530
-->
     <para>
      Fix logical replication's checking of replica identity when the
      target table is partitioned (Shi Yu, Hou Zhijie)
      <ulink url="&commit_baseurl;5f113d60e">&sect;</ulink>
      <ulink url="&commit_baseurl;419c72715">&sect;</ulink>
     </para>

     <para>
      The replica identity columns have to be re-identified for the child
      partition.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master Release: REL_15_BR [b7658c24c] 2022-06-16 08:45:07 +0530
Branch: REL_14_STABLE [0980adfd4] 2022-06-16 08:32:10 +0530
Branch: REL_13_STABLE [1f9a7738e] 2022-06-16 08:24:22 +0530
Branch: master Release: REL_15_BR [5a97b1325] 2022-06-15 09:52:12 +0530
Branch: REL_14_STABLE [d457cb4e8] 2022-06-15 09:59:52 +0530
Branch: REL_13_STABLE [16f5a8da7] 2022-06-15 10:16:35 +0530
-->
     <para>
      Fix failures to update cached schema data in a logical replication
      subscriber after a schema change on the publisher (Shi Yu, Hou
      Zhijie)
      <ulink url="&commit_baseurl;1f9a7738e">&sect;</ulink>
      <ulink url="&commit_baseurl;16f5a8da7">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_15_BR [16c80e7d0] 2022-05-31 14:47:44 -0400
Branch: REL_14_STABLE Release: REL_14_4 [c47a55852] 2022-05-31 14:47:44 -0400
Branch: REL_13_STABLE [c73748b68] 2022-05-31 14:47:44 -0400
Branch: REL_12_STABLE [a3faebd6a] 2022-05-31 14:47:44 -0400
Branch: REL_11_STABLE [ae758e603] 2022-05-31 14:47:44 -0400
Branch: REL_10_STABLE [2114910ca] 2022-05-31 14:47:44 -0400
-->
     <para>
      Prevent open-file leak when reading an invalid timezone abbreviation
      file (Kyotaro Horiguchi)
      <ulink url="&commit_baseurl;c73748b68">&sect;</ulink>
     </para>

     <para>
      Such cases could result in harmless warning messages.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master Release: REL_15_BR [f1431f3bf] 2022-05-28 12:12:40 +0900
Branch: REL_14_STABLE Release: REL_14_4 [fe441a031] 2022-05-28 12:12:46 +0900
Branch: REL_13_STABLE [1e6802990] 2022-05-28 12:12:51 +0900
Branch: REL_12_STABLE [ae236bf66] 2022-05-28 12:12:55 +0900
Branch: REL_11_STABLE [c3db8a2e2] 2022-05-28 12:12:58 +0900
Branch: REL_10_STABLE [1b40ceea2] 2022-05-28 12:13:02 +0900
-->
     <para>
      Allow custom server parameters to have short descriptions that are
      NULL (Steve Chavez)
      <ulink url="&commit_baseurl;1e6802990">&sect;</ulink>
     </para>

     <para>
      Previously, although extensions could choose to create such
      settings, some code paths would crash while processing them.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [e44dae07f] 2022-08-05 18:00:17 +0200
Branch: REL_15_STABLE [2cff30259] 2022-08-05 18:00:17 +0200
Branch: REL_14_STABLE [541f41d4f] 2022-08-05 18:00:17 +0200
Branch: REL_13_STABLE [de31e6f81] 2022-08-05 18:00:17 +0200
Branch: REL_12_STABLE [49b85e481] 2022-08-05 18:00:17 +0200
Branch: REL_11_STABLE [39e45d3ce] 2022-08-05 18:00:17 +0200
Branch: REL_10_STABLE [e797c7a6f] 2022-08-05 18:00:17 +0200
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [afe58c8b7] 2022-08-07 10:19:40 +0200
Branch: REL_15_STABLE [9c3006000] 2022-08-07 10:19:40 +0200
Branch: REL_14_STABLE [f4beef1c2] 2022-08-07 10:19:40 +0200
Branch: REL_13_STABLE [1626590f2] 2022-08-07 10:19:40 +0200
Branch: REL_12_STABLE [3aafd5da7] 2022-08-07 10:19:40 +0200
Branch: REL_11_STABLE [61904503b] 2022-08-07 10:19:40 +0200
Branch: REL_10_STABLE [8e5874964] 2022-08-07 10:19:40 +0200
-->
     <para>
      Fix WAL consistency checking logic to correctly
      handle <literal>BRIN_EVACUATE_PAGE</literal> flags (Haiyang Wang)
      <ulink url="&commit_baseurl;de31e6f81">&sect;</ulink>
      <ulink url="&commit_baseurl;1626590f2">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [eed959a45] 2022-07-11 16:43:29 +1200
Branch: REL_15_STABLE [53df1e28d] 2022-07-11 16:01:22 +1200
Branch: REL_14_STABLE [5e7608e81] 2022-07-11 15:47:12 +1200
Branch: REL_13_STABLE [7cdd0c2d7] 2022-07-11 15:48:54 +1200
Branch: REL_12_STABLE [4f88dbac2] 2022-07-11 15:51:47 +1200
Branch: REL_11_STABLE [cd26139a3] 2022-07-11 15:54:24 +1200
-->
     <para>
      Fix erroneous assertion checks in shared hashtable management
      (Thomas Munro)
      <ulink url="&commit_baseurl;7cdd0c2d7">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL_14_STABLE [604651880] 2022-06-22 12:11:59 -0400
Branch: REL_13_STABLE [cfc86f987] 2022-06-22 12:12:00 -0400
Branch: REL_12_STABLE [293f5c5f4] 2022-06-22 12:12:00 -0400
Branch: REL_11_STABLE [2f6b8c287] 2022-06-22 12:12:00 -0400
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: REL_14_STABLE [8657946d3] 2022-07-18 16:23:48 +0200
Branch: REL_13_STABLE [b2c8d5661] 2022-07-18 19:20:07 +0200
Branch: REL_12_STABLE [9af9e2094] 2022-07-18 19:33:46 +0200
Branch: REL_11_STABLE [6d61aef5d] 2022-07-18 19:38:24 +0200
-->
     <para>
      Arrange to clean up after commit-time errors
      within <function>SPI_commit()</function>, rather than expecting
      callers to do that (Peter Eisentraut, Tom Lane)
      <ulink url="&commit_baseurl;cfc86f987">&sect;</ulink>
      <ulink url="&commit_baseurl;b2c8d5661">&sect;</ulink>
     </para>

     <para>
      Proper cleanup is complicated and requires use of low-level
      facilities, so it's not surprising that no known caller got it
      right.  This led to misbehaviors when a PL procedure
      issued <command>COMMIT</command> but a failure occurred (such as a
      deferred constraint check).  To improve matters,
      redefine <function>SPI_commit()</function> as starting a new
      transaction, so that it becomes equivalent
      to <function>SPI_commit_and_chain()</function> except that you get
      default transaction characteristics instead of preserving the prior
      transaction's characteristics.  To make this somewhat transparent
      API-wise, redefine <function>SPI_start_transaction()</function> as a
      no-op.  All known callers of <function>SPI_commit()</function>
      immediately call <function>SPI_start_transaction()</function>, so
      they will not notice any change.  Similar remarks apply
      to <function>SPI_rollback()</function>.
     </para>

     <para>
      Also fix PL/Python, which omitted any handling of such errors at all,
      resulting in jumping out of the Python interpreter.  This is
      reported to crash Python 3.11.  Older Python releases leak some
      memory but seem okay with it otherwise.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_15_BR [2b65de7fc] 2022-05-26 14:14:05 -0400
Branch: REL_14_STABLE Release: REL_14_4 [b4be4a082] 2022-05-26 14:14:05 -0400
Branch: REL_13_STABLE [9e3dbc6fd] 2022-05-26 14:14:05 -0400
Branch: REL_12_STABLE [01ab9fb7d] 2022-05-26 14:14:05 -0400
Branch: REL_11_STABLE [a44bc8b8f] 2022-05-26 14:14:05 -0400
Branch: REL_10_STABLE [ef54a6576] 2022-05-26 14:14:05 -0400
-->
     <para>
      Remove misguided SSL key file ownership check
      in <application>libpq</application> (Tom Lane)
      <ulink url="&commit_baseurl;9e3dbc6fd">&sect;</ulink>
     </para>

     <para>
      In the previous minor releases, we copied the server's permission
      checking rules for SSL private key files into libpq.  But we should
      not have also copied the server's file-ownership check.  While that
      works in normal use-cases, it can result in an unexpected failure
      for clients running as root, and perhaps in other cases.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_15_BR [6d157e7cb] 2022-06-06 11:20:21 -0400
Branch: REL_14_STABLE Release: REL_14_4 [a5dbca460] 2022-06-06 11:20:31 -0400
Branch: REL_13_STABLE [16d68007c] 2022-06-06 11:20:36 -0400
Branch: REL_12_STABLE [02026cadb] 2022-06-06 11:20:41 -0400
Branch: REL_11_STABLE [d82ed5b2f] 2022-06-06 11:20:46 -0400
Branch: REL_10_STABLE [89254606b] 2022-06-06 11:20:52 -0400
-->
     <para>
      Ensure <application>ecpg</application> reports server connection loss
      sanely (Tom Lane)
      <ulink url="&commit_baseurl;16d68007c">&sect;</ulink>
     </para>

     <para>
      Misprocessing of a libpq-generated error result, such as a report of
      lost connection, would lead to printing <quote>(null)</quote>
      instead of a useful error message; or in older releases it would
      lead to a crash.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_15_BR [ba412c905] 2022-06-14 18:16:46 -0400
Branch: REL_14_STABLE [7bc21ed8c] 2022-06-14 18:16:46 -0400
Branch: REL_13_STABLE [12b8fb34a] 2022-06-14 18:16:46 -0400
Branch: REL_12_STABLE [9a3aab0f2] 2022-06-14 18:16:46 -0400
Branch: REL_11_STABLE [f7797747f] 2022-06-14 18:16:46 -0400
Branch: REL_10_STABLE [86258f083] 2022-06-14 18:16:46 -0400
-->
     <para>
      Avoid core dump in <application>ecpglib</application> with
      unexpected orders of operations (Tom Lane)
      <ulink url="&commit_baseurl;12b8fb34a">&sect;</ulink>
     </para>

     <para>
      Certain operations such as <command>EXEC SQL PREPARE</command> would
      crash (rather than reporting an error as expected) if called before
      establishing any database connection.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [5633836ef] 2022-07-02 13:00:30 -0700
Branch: REL_15_STABLE [7a28f7cb0] 2022-07-02 13:00:34 -0700
Branch: REL_14_STABLE [5b94e2bd4] 2022-07-02 13:00:34 -0700
Branch: REL_13_STABLE [b4d7e92bd] 2022-07-02 13:00:34 -0700
Branch: REL_12_STABLE [5e0b8f3f4] 2022-07-02 13:00:34 -0700
Branch: REL_11_STABLE [d68b731a1] 2022-07-02 13:00:35 -0700
Branch: REL_10_STABLE [12b2a2369] 2022-07-02 13:00:35 -0700
Branch: master [e2bc24283] 2022-07-02 21:03:19 -0700
Branch: REL_15_STABLE [8533eb181] 2022-07-02 21:03:22 -0700
Branch: REL_14_STABLE [463a841d7] 2022-07-02 21:03:22 -0700
Branch: REL_13_STABLE [97b005f3f] 2022-07-02 21:03:23 -0700
Branch: REL_12_STABLE [a4240139f] 2022-07-02 21:03:23 -0700
Branch: REL_11_STABLE [1cad30e3b] 2022-07-02 21:03:24 -0700
Branch: REL_10_STABLE [f5e4d64bb] 2022-07-02 21:03:24 -0700
-->
     <para>
      In <application>ecpglib</application>, avoid
      redundant <function>newlocale()</function> calls (Noah Misch)
      <ulink url="&commit_baseurl;b4d7e92bd">&sect;</ulink>
      <ulink url="&commit_baseurl;97b005f3f">&sect;</ulink>
     </para>

     <para>
      Allocate a C locale object once per process when first connecting,
      rather than creating and freeing locale objects once per query.
      This mitigates a libc memory leak on AIX, and may offer some
      performance benefit everywhere.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [21267b647] 2022-07-10 16:52:38 +1200
Branch: REL_15_STABLE [31b485f88] 2022-07-10 16:53:05 +1200
Branch: REL_14_STABLE [ab7fef0ac] 2022-07-10 16:53:18 +1200
Branch: REL_13_STABLE [e5b5b4448] 2022-07-10 16:53:39 +1200
Branch: REL_12_STABLE [09224a35c] 2022-07-10 16:54:09 +1200
Branch: REL_11_STABLE [21ed12b14] 2022-07-10 16:55:18 +1200
Branch: REL_10_STABLE [7c5953b7b] 2022-07-10 16:57:04 +1200
-->
     <para>
      In <application>psql</application>'s <command>\watch</command>
      command, echo a newline after cancellation with control-C
      (Pavel Stehule)
      <ulink url="&commit_baseurl;e5b5b4448">&sect;</ulink>
     </para>

     <para>
      This prevents libedit (and possibly also libreadline) from becoming
      confused about which column the cursor is in.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [8b1ec7d29] 2022-08-01 16:38:23 +0900
Branch: REL_15_STABLE [07abcd9ab] 2022-08-01 16:39:16 +0900
Branch: REL_14_STABLE [523926dea] 2022-08-01 16:39:27 +0900
Branch: REL_13_STABLE [aadaaeff4] 2022-08-01 16:39:30 +0900
Branch: REL_12_STABLE [24872bbf9] 2022-08-01 16:39:33 +0900
-->
     <para>
      Fix possible report of wrong error condition
      after <function>clone()</function> failure
      in <application>pg_upgrade</application>
      with <option>--clone</option> option (Justin Pryzby)
      <ulink url="&commit_baseurl;aadaaeff4">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c67c2e2a2] 2022-08-02 18:05:38 -0400
Branch: REL_15_STABLE [82ebc70d1] 2022-08-02 18:05:34 -0400
Branch: REL_14_STABLE [17fd203b4] 2022-08-02 18:05:34 -0400
Branch: REL_13_STABLE [6b67db10c] 2022-08-02 18:05:34 -0400
Branch: REL_12_STABLE [6608a4305] 2022-08-02 18:05:34 -0400
Branch: REL_11_STABLE [06f6a07ba] 2022-08-02 18:05:34 -0400
Branch: REL_10_STABLE [dd414bf4e] 2022-08-02 18:05:34 -0400
-->
     <para>
      Fix <filename>contrib/pg_stat_statements</filename> to avoid
      problems with very large query-text files on 32-bit platforms
      (Tom Lane)
      <ulink url="&commit_baseurl;6b67db10c">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [0a7ccee8f] 2022-07-17 17:27:50 -0400
Branch: REL_15_STABLE [b8032f481] 2022-07-17 17:27:50 -0400
Branch: REL_14_STABLE [810bcbd38] 2022-07-17 17:27:50 -0400
Branch: REL_13_STABLE [6230bd7df] 2022-07-17 17:27:50 -0400
Branch: REL_12_STABLE [288e499ba] 2022-07-17 17:27:50 -0400
Branch: REL_11_STABLE [94bcb48ab] 2022-07-17 17:27:50 -0400
Branch: REL_10_STABLE [26c9e1bd8] 2022-07-17 17:27:51 -0400
-->
     <para>
      Ensure that <filename>contrib/postgres_fdw</filename> sends
      constants of <type>regconfig</type> and other <type>reg*</type>
      types with proper schema qualification (Tom Lane)
      <ulink url="&commit_baseurl;6230bd7df">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [4518c798b] 2022-07-14 18:01:27 +1200
Branch: REL_15_STABLE [c4a617ea1] 2022-07-14 18:00:58 +1200
Branch: REL_14_STABLE [2019e6ecf] 2022-07-14 17:48:32 +1200
Branch: REL_13_STABLE [e73fe6e82] 2022-07-14 14:32:48 +1200
Branch: REL_12_STABLE [ff78bf796] 2022-07-14 14:26:49 +1200
Branch: REL_11_STABLE [39683c69a] 2022-07-14 14:23:03 +1200
Branch: REL_10_STABLE [53cfe403c] 2022-07-14 10:50:13 +1200
Branch: master [80845b7c0] 2022-07-15 02:00:09 +1200
Branch: REL_15_STABLE [a715c2004] 2022-07-15 02:00:35 +1200
Branch: REL_14_STABLE [838364559] 2022-07-15 02:02:28 +1200
Branch: REL_13_STABLE [17aa39da5] 2022-07-15 02:04:53 +1200
Branch: REL_12_STABLE [a05f40ef8] 2022-07-15 02:06:01 +1200
Branch: REL_11_STABLE [74a9ee034] 2022-07-15 02:07:15 +1200
Branch: REL_10_STABLE [e26024bea] 2022-07-15 02:08:27 +1200
Branch: master [3b8d23a3e] 2022-07-16 12:22:42 +1200
Branch: REL_15_STABLE [91377a455] 2022-07-16 12:23:03 +1200
Branch: REL_14_STABLE [c412c60b9] 2022-07-16 12:23:14 +1200
Branch: REL_13_STABLE [c75b6b454] 2022-07-16 12:23:24 +1200
Branch: REL_12_STABLE [1661c40b9] 2022-07-16 12:23:34 +1200
Branch: REL_11_STABLE [3f2344d4a] 2022-07-16 12:23:43 +1200
Branch: REL_10_STABLE [d3b0884c0] 2022-07-16 12:23:52 +1200
-->
     <para>
      Block signals while allocating dynamic shared memory on Linux
      (Thomas Munro)
      <ulink url="&commit_baseurl;e73fe6e82">&sect;</ulink>
      <ulink url="&commit_baseurl;17aa39da5">&sect;</ulink>
      <ulink url="&commit_baseurl;c75b6b454">&sect;</ulink>
     </para>

     <para>
      This avoids problems when a signal
      interrupts <function>posix_fallocate()</function>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [389869af5] 2022-07-01 14:17:54 +1200
Branch: REL_15_STABLE [fef8c7a0c] 2022-07-01 13:15:17 +1200
Branch: REL_14_STABLE [fb81a93a6] 2022-07-01 13:16:27 +1200
Branch: REL_13_STABLE [b436047dc] 2022-07-01 14:03:48 +1200
Branch: REL_12_STABLE [f7b69b1e3] 2022-07-01 13:26:50 +1200
Branch: REL_11_STABLE [facfd0467] 2022-07-01 13:21:28 +1200
Branch: REL_10_STABLE [22b9afaf5] 2022-07-01 13:19:06 +1200
-->
     <para>
      Detect unexpected <literal>EEXIST</literal> error
      from <function>shm_open()</function> (Thomas Munro)
      <ulink url="&commit_baseurl;b436047dc">&sect;</ulink>
     </para>

     <para>
      This avoids a possible crash on Solaris.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_15_BR [eb39610f8] 2022-06-01 16:15:47 -0400
Branch: REL_14_STABLE Release: REL_14_4 [1072e4c45] 2022-06-01 16:15:47 -0400
Branch: REL_13_STABLE [eeac7dd9f] 2022-06-01 16:15:47 -0400
Branch: REL_12_STABLE [c08538734] 2022-06-01 16:15:47 -0400
Branch: REL_11_STABLE [b5265196e] 2022-06-01 16:15:47 -0400
Branch: REL_10_STABLE [d5e1d5ed9] 2022-06-01 16:15:47 -0400
Branch: REL9_6_STABLE [d4c161842] 2022-06-01 16:15:47 -0400
Branch: REL9_5_STABLE [9fdeae848] 2022-06-01 16:15:47 -0400
Branch: REL9_4_STABLE [b53780e1b] 2022-06-01 16:15:47 -0400
Branch: REL9_3_STABLE [a3b685fdd] 2022-06-01 16:15:47 -0400
Branch: REL9_2_STABLE [6f9ea6cf3] 2022-06-01 16:15:47 -0400
-->
     <para>
      Adjust PL/Perl test case so it will work under Perl 5.36
      (Dagfinn Ilmari Mannsåker)
      <ulink url="&commit_baseurl;eeac7dd9f">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_15_BR [aff45c879] 2022-05-10 18:42:02 -0400
Branch: REL_14_STABLE Release: REL_14_4 [12736e7dc] 2022-05-10 18:42:02 -0400
Branch: REL_13_STABLE [af9b96767] 2022-05-10 18:42:02 -0400
Branch: REL_12_STABLE [8ed13fb93] 2022-05-10 18:42:02 -0400
Branch: REL_11_STABLE [36d76da81] 2022-05-10 18:42:02 -0400
Branch: REL_10_STABLE [c61f36d99] 2022-05-10 18:42:02 -0400
-->
     <para>
      Avoid incorrectly using an
      out-of-date <application>libldap_r</application> library when
      multiple <productname>OpenLDAP</productname> installations are
      present while building <productname>PostgreSQL</productname>
      (Tom Lane)
      <ulink url="&commit_baseurl;af9b96767">&sect;</ulink>
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-7">
  <title>Release 13.7</title>

  <formalpara>
  <title>Release date:</title>
  <para>2022-05-12</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.6.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.7</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you have any GiST indexes on columns of type
    <type>ltree</type> (supplied by the <filename>contrib/ltree</filename>
    extension), you should re-index them after updating.
    See the second changelog entry below.
   </para>

   <para>
    Also, if you are upgrading from a version earlier than 13.6,
    see <xref linkend="release-13-6"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [a117cebd6] 2022-05-09 08:35:08 -0700
Branch: REL_14_STABLE [ab49ce7c3] 2022-05-09 08:35:12 -0700
Branch: REL_13_STABLE [35edcc0ce] 2022-05-09 08:35:12 -0700
Branch: REL_12_STABLE [7f098f7b5] 2022-05-09 08:35:12 -0700
Branch: REL_11_STABLE [48ca2904c] 2022-05-09 08:35:13 -0700
Branch: REL_10_STABLE [ef792f785] 2022-05-09 08:35:13 -0700
Author: Noah Misch <noah@leadboat.com>
Branch: master [0abc1a059] 2022-05-09 08:35:08 -0700
Branch: REL_14_STABLE [677a49478] 2022-05-09 08:35:12 -0700
Branch: REL_13_STABLE [88743d581] 2022-05-09 08:35:12 -0700
Branch: REL_12_STABLE [880511cb0] 2022-05-09 08:35:12 -0700
Branch: REL_11_STABLE [34ff15660] 2022-05-09 08:35:13 -0700
Branch: REL_10_STABLE [f26d57028] 2022-05-09 08:35:13 -0700
-->
     <para>
      Confine additional operations within <quote>security restricted
      operation</quote> sandboxes (Sergey Shinderuk, Noah Misch)
      <ulink url="&commit_baseurl;35edcc0ce">&sect;</ulink>
      <ulink url="&commit_baseurl;88743d581">&sect;</ulink>
     </para>

     <para>
      Autovacuum, <command>CLUSTER</command>, <command>CREATE
      INDEX</command>, <command>REINDEX</command>, <command>REFRESH
      MATERIALIZED VIEW</command>,
      and <application>pg_amcheck</application> activated
      the <quote>security restricted operation</quote> protection
      mechanism too late, or even not at all in some code paths.
      A user having permission to create non-temporary objects within a
      database could define an object that would execute arbitrary SQL
      code with superuser permissions the next time that autovacuum
      processed the object, or that some superuser ran one of the affected
      commands against it.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Alexander Lakhin for reporting this problem.
      (CVE-2022-1552)
     </para>
    </listitem>

    <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
Branch: master [7e74aafc4] 2022-03-16 11:41:18 +0300
Branch: REL_14_STABLE [7d30f59da] 2022-03-16 11:41:30 +0300
Branch: REL_13_STABLE [bad202c61] 2022-03-16 11:41:34 +0300
-->
     <para>
      Fix default signature length for <literal>gist_ltree_ops</literal>
      indexes (Tomas Vondra, Alexander Korotkov)
      <ulink url="&commit_baseurl;bad202c61">&sect;</ulink>
     </para>

     <para>
      The default signature length (hash size) for GiST indexes
      on <type>ltree</type> columns was accidentally changed while
      upgrading that operator class to support operator class parameters.
      If any operations had been done on such an index without first
      upgrading the <literal>ltree</literal> extension to version 1.2,
      they were done assuming that the signature length was 28 bytes
      rather than the intended 8.  This means it is very likely that such
      indexes are now corrupt.  For safety we recommend re-indexing all
      GiST indexes on <type>ltree</type> columns after installing this
      update.  (Note that GiST indexes on <type>ltree[]</type>
      columns, that is arrays of <type>ltree</type>, are not affected.)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ec62cb0aa] 2022-03-17 18:18:05 -0400
Branch: REL_14_STABLE [1d072bd20] 2022-03-17 18:18:05 -0400
Branch: REL_13_STABLE [5e144cc89] 2022-03-17 18:18:05 -0400
Branch: REL_12_STABLE [1f5ef5ae0] 2022-03-17 18:18:05 -0400
Branch: REL_11_STABLE [13b54d1e0] 2022-03-17 18:18:05 -0400
Branch: REL_10_STABLE [205214c8b] 2022-03-17 18:18:05 -0400
-->
     <para>
      Stop using query-provided column aliases for the columns of
      whole-row variables that refer to plain tables (Tom Lane)
      <ulink url="&commit_baseurl;5e144cc89">&sect;</ulink>
     </para>

     <para>
      The column names in tuples produced by a whole-row variable (such
      as <literal>tbl.*</literal> in contexts other than the top level of
      a <literal>SELECT</literal> list) are now always those of the
      associated named composite type, if there is one.  We'd previously
      attempted to make them track any column aliases that had been
      applied to the <literal>FROM</literal> entry the variable refers to.
      But that's semantically dubious, because really then the output of
      the variable is not at all of the composite type it claims to be.
      Previous attempts to deal with that inconsistency had bad results up
      to and including storing unreadable data on disk, so just give up on
      the whole idea.
     </para>

     <para>
      In cases where it's important to be able to relabel such columns,
      a workaround is to introduce an extra level of
      sub-<literal>SELECT</literal>, so that the whole-row variable is
      referring to the sub-<literal>SELECT</literal>'s output and not to a
      plain table.  Then the variable is of type <type>record</type>
      to begin with and there's no issue.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [068739fb4] 2022-03-18 16:01:42 -0400
Branch: REL_14_STABLE [ae8ec7feb] 2022-03-18 16:01:42 -0400
Branch: REL_13_STABLE [88ae77588] 2022-03-18 16:01:42 -0400
Branch: REL_12_STABLE [840729fd1] 2022-03-18 16:01:42 -0400
Branch: REL_11_STABLE [84f3ecdaa] 2022-03-18 16:01:42 -0400
Branch: REL_10_STABLE [e6fd4a3da] 2022-03-18 16:01:42 -0400
-->
     <para>
      Fix incorrect output for types <type>timestamptz</type>
      and <type>timetz</type> in <function>table_to_xmlschema()</function>
      and allied functions (Renan Soares Lopes)
      <ulink url="&commit_baseurl;88ae77588">&sect;</ulink>
     </para>

     <para>
      The xmlschema output for these types included a malformed regular
      expression.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [fe20afaee] 2022-05-09 14:15:37 -0400
Branch: REL_14_STABLE [ab2f78392] 2022-05-09 14:15:37 -0400
Branch: REL_13_STABLE [91a3a74c6] 2022-05-09 14:15:37 -0400
Branch: REL_12_STABLE [90e52884e] 2022-05-09 14:15:37 -0400
Branch: REL_11_STABLE [539f8c563] 2022-05-09 14:15:37 -0400
Branch: REL_10_STABLE [4eabaffca] 2022-05-09 14:15:37 -0400
-->
     <para>
      Avoid core dump in parser for a <literal>VALUES</literal> clause with
      zero columns (Tom Lane)
      <ulink url="&commit_baseurl;91a3a74c6">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [2591ee8ec] 2022-03-21 17:44:29 -0400
Branch: REL_14_STABLE [48b6035f0] 2022-03-21 17:44:29 -0400
Branch: REL_13_STABLE [dfefe38fb] 2022-03-21 17:44:29 -0400
Branch: REL_12_STABLE [69c88e2fb] 2022-03-21 17:44:29 -0400
Branch: REL_11_STABLE [5de244196] 2022-03-21 17:44:29 -0400
Branch: REL_10_STABLE [2afa031ac] 2022-03-21 17:44:29 -0400
-->
     <para>
      Fix planner errors for <function>GROUPING()</function> constructs
      that reference outer query levels (Richard Guo, Tom Lane)
      <ulink url="&commit_baseurl;dfefe38fb">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [e5691cc91] 2022-02-11 15:24:02 -0500
Branch: REL_14_STABLE [277e744ae] 2022-02-11 15:23:52 -0500
Branch: REL_13_STABLE [0778b24ce] 2022-02-11 15:23:52 -0500
Branch: REL_12_STABLE [32e801676] 2022-02-11 15:23:52 -0500
Branch: REL_11_STABLE [14ee565f3] 2022-02-11 15:23:52 -0500
Branch: REL_10_STABLE [b6f869bee] 2022-02-11 15:23:52 -0500
-->
     <para>
      Fix plan generation for index-only scans on indexes with
      both returnable and non-returnable columns (Tom Lane)
      <ulink url="&commit_baseurl;0778b24ce">&sect;</ulink>
     </para>

     <para>
      The previous coding could try to read non-returnable columns
      in addition to the returnable ones.  This was fairly harmless
      because it didn't actually do anything with the bogus values,
      but it fell foul of a recently-added error check that rejected
      such a plan.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [7b7ed046c] 2022-04-13 13:35:07 -0400
Branch: REL_14_STABLE [c590e514a] 2022-04-13 13:35:02 -0400
Branch: REL_13_STABLE [44096c31e] 2022-04-13 13:35:02 -0400
Branch: REL_12_STABLE [e0ed20d0b] 2022-04-13 13:35:02 -0400
-->
     <para>
      Avoid accessing a no-longer-pinned shared buffer while attempting
      to lock an outdated tuple during EvalPlanQual (Tom Lane)
      <ulink url="&commit_baseurl;44096c31e">&sect;</ulink>
     </para>

     <para>
      The code would touch the buffer a couple more times after releasing
      its pin.  In theory another process could recycle the buffer (or
      more likely, try to defragment its free space) as soon as the pin is
      gone, probably leading to failure to find the newer version of the
      tuple.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
Branch: master [3f74daa8d] 2022-02-14 04:17:04 +0300
Branch: REL_14_STABLE [c76665edc] 2022-02-14 03:32:31 +0300
Branch: REL_13_STABLE [ac2303aa0] 2022-02-14 03:32:34 +0300
Branch: REL_12_STABLE [7a12a9e3c] 2022-02-14 03:32:39 +0300
Branch: REL_11_STABLE [0d554775b] 2022-02-14 04:04:19 +0300
Branch: REL_10_STABLE [2e9033a54] 2022-02-14 04:04:28 +0300
-->
     <para>
      Fix query-lifespan memory leak in an IndexScan node that is
      performing reordering (Aliaksandr Kalenik)
      <ulink url="&commit_baseurl;ac2303aa0">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [344a225cb] 2022-04-19 23:03:59 -0400
Branch: REL_14_STABLE [08a9e7a8c] 2022-04-19 23:03:59 -0400
Branch: REL_13_STABLE [f583633bc] 2022-04-19 23:03:59 -0400
Branch: REL_12_STABLE [481a99811] 2022-04-19 23:03:59 -0400
Branch: REL_11_STABLE [9130f8cbb] 2022-04-19 23:03:59 -0400
Branch: REL_10_STABLE [409bcfda6] 2022-04-19 23:03:59 -0400
-->
     <para>
      Fix <command>ALTER FUNCTION</command> to support changing a
      function's parallelism property and
      its <literal>SET</literal>-variable list in the same command (Tom
      Lane)
      <ulink url="&commit_baseurl;f583633bc">&sect;</ulink>
     </para>

     <para>
      The parallelism property change was lost if the same command also
      updated the function's <literal>SET</literal> clause.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [36d4efe77] 2022-04-18 12:16:45 -0400
Branch: REL_14_STABLE [e805735a8] 2022-04-18 12:16:45 -0400
Branch: REL_13_STABLE [69cefb3fb] 2022-04-18 12:16:45 -0400
Branch: REL_12_STABLE [0795da869] 2022-04-18 12:16:45 -0400
-->
     <para>
      Fix bogus errors from attempts to alter system columns of tables
      (Tom Lane)
      <ulink url="&commit_baseurl;69cefb3fb">&sect;</ulink>
     </para>

     <para>
      The system should just tell you that you can't do it, but sometimes
      it would report <quote>no owned sequence found</quote> instead.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Geoghegan <pg@bowt.ie>
Branch: master [8ab0ebb9a] 2022-04-20 17:17:43 -0700
Branch: REL_14_STABLE [e4521841a] 2022-04-20 17:17:41 -0700
Branch: REL_13_STABLE [1272630a2] 2022-04-20 17:17:39 -0700
Branch: REL_12_STABLE [5487585e3] 2022-04-20 17:17:37 -0700
Branch: REL_11_STABLE [adb2d84fc] 2022-04-20 17:17:35 -0700
Branch: REL_10_STABLE [a903895b3] 2022-04-20 17:17:33 -0700
-->
     <para>
      Fix mis-sorting of table rows when <command>CLUSTER</command>ing
      using an index whose leading key is an expression (Peter Geoghegan,
      Thomas Munro)
      <ulink url="&commit_baseurl;1272630a2">&sect;</ulink>
     </para>

     <para>
      The table would be rebuilt with the correct data, but in an order
      having little to do with the index order.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [7b6ec8653] 2022-03-21 12:22:13 -0400
Branch: REL_14_STABLE [05ccf974c] 2022-03-21 12:22:13 -0400
Branch: REL_13_STABLE [2241e5ced] 2022-03-21 12:22:13 -0400
Branch: REL_12_STABLE [d8d378d51] 2022-03-21 12:22:13 -0400
Branch: REL_11_STABLE [b8ae17fd9] 2022-03-21 12:22:13 -0400
-->
     <para>
      Fix risk of deadlock failures while dropping a partitioned index
      (Jimmy Yih, Gaurab Dey, Tom Lane)
      <ulink url="&commit_baseurl;2241e5ced">&sect;</ulink>
     </para>

     <para>
      Ensure that the required table and index locks are taken in the
      standard order (parents before children, tables before indexes).
      The previous coding for <command>DROP INDEX</command> did it
      differently, and so could deadlock against concurrent queries taking
      these locks in the standard order.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [46d9bfb0a] 2022-03-16 17:20:24 +1300
Branch: REL_14_STABLE [26e007939] 2022-03-16 17:20:50 +1300
Branch: REL_13_STABLE [51e760e5a] 2022-03-16 17:21:19 +1300
Branch: REL_12_STABLE [c918f07dd] 2022-03-16 17:21:46 +1300
Branch: REL_11_STABLE [ca522c60a] 2022-03-16 17:38:55 +1300
Branch: REL_10_STABLE [fe197872c] 2022-03-16 17:41:31 +1300
-->
     <para>
      Fix race condition between <command>DROP TABLESPACE</command> and
      checkpointing (Nathan Bossart)
      <ulink url="&commit_baseurl;51e760e5a">&sect;</ulink>
     </para>

     <para>
      The checkpoint forced by <command>DROP TABLESPACE</command> could
      sometimes fail to remove all dead files from the tablespace's
      directory, leading to a bogus <quote>tablespace is not empty</quote>
      error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [412ad7a55] 2022-03-24 14:52:28 -0400
Branch: REL_14_STABLE [bbace5697] 2022-03-24 14:32:48 -0400
Branch: REL_13_STABLE [1ce14b6b2] 2022-03-24 14:36:06 -0400
Branch: REL_12_STABLE [3821d66a7] 2022-03-24 14:38:51 -0400
Branch: REL_11_STABLE [118f1a332] 2022-03-24 14:49:08 -0400
Branch: REL_10_STABLE [57f618310] 2022-03-24 14:50:06 -0400
Author: Robert Haas <rhaas@postgresql.org>
Branch: REL_14_STABLE [10520f434] 2022-04-14 11:10:07 -0400
Branch: REL_13_STABLE [d18c913b7] 2022-04-14 11:10:11 -0400
Branch: REL_12_STABLE [68e605b9e] 2022-04-14 11:10:13 -0400
Branch: REL_11_STABLE [6270ee445] 2022-04-14 11:10:16 -0400
Branch: REL_10_STABLE [48b398943] 2022-04-14 11:10:18 -0400
-->
     <para>
      Fix possible trouble in crash recovery after
      a <command>TRUNCATE</command> command that overlaps a checkpoint
      (Kyotaro Horiguchi, Heikki Linnakangas, Robert Haas)
      <ulink url="&commit_baseurl;1ce14b6b2">&sect;</ulink>
      <ulink url="&commit_baseurl;d18c913b7">&sect;</ulink>
     </para>

     <para>
      <command>TRUNCATE</command> must ensure that the table's disk file
      is truncated before the checkpoint is allowed to complete.
      Otherwise, replay starting from that checkpoint might find
      unexpected data in the supposedly-removed pages, possibly causing
      replay failure.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [7c38ef2a5] 2022-02-21 08:57:34 -0800
Branch: REL_14_STABLE [7bbfe5994] 2022-02-21 09:57:05 -0800
Branch: REL_13_STABLE [c2551483e] 2022-02-21 08:59:30 -0800
Branch: REL_12_STABLE [0033fc63f] 2022-02-21 08:59:32 -0800
Branch: REL_11_STABLE [3faa21bb7] 2022-02-21 08:59:34 -0800
Branch: REL_10_STABLE [cebc54b90] 2022-02-21 08:59:36 -0800
-->
     <para>
      Fix unsafe toast-data accesses during temporary object cleanup
      (Andres Freund)
      <ulink url="&commit_baseurl;c2551483e">&sect;</ulink>
     </para>

     <para>
      Temporary-object deletion during server process exit could fail
      with <quote>FATAL: cannot fetch toast data without an active
      snapshot</quote>.  This was usually harmless since the next use of
      that temporary schema would clean up successfully.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [3390ef1b7] 2022-03-16 15:35:16 +1300
Branch: REL_14_STABLE [1396b5c6e] 2022-03-16 15:35:42 +1300
Branch: REL_13_STABLE [cfdb303be] 2022-03-16 15:37:15 +1300
Branch: REL_12_STABLE [368ffdeee] 2022-03-16 15:38:13 +1300
-->
     <para>
      Improve wait logic in RegisterSyncRequest (Thomas Munro)
      <ulink url="&commit_baseurl;cfdb303be">&sect;</ulink>
     </para>

     <para>
      If we run out of space in the checkpointer sync request queue (which
      is hopefully rare on real systems, but is common when testing with a
      very small buffer pool), we wait for it to drain.  While waiting, we
      should report that as a wait event so that users know what is going
      on, and also watch for postmaster death, since otherwise the loop might
      never terminate if the checkpointer has already exited.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [9d92582ab] 2022-03-23 18:22:10 +0100
Branch: REL_14_STABLE [caaeb88ff] 2022-03-23 18:22:10 +0100
Branch: REL_13_STABLE [98eb3e06c] 2022-03-23 18:22:10 +0100
Branch: REL_12_STABLE [c714ebd0e] 2022-03-23 18:22:10 +0100
Branch: REL_11_STABLE [199cd7b59] 2022-03-23 18:22:10 +0100
Branch: REL_10_STABLE [9ade3c09a] 2022-03-23 18:22:10 +0100
-->
     <para>
      Fix <quote>PANIC: xlog flush request is not satisfied</quote>
      failure during standby promotion when there is a missing WAL
      continuation record (Sami Imseih)
      <ulink url="&commit_baseurl;98eb3e06c">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [8f1537d10] 2022-05-02 18:25:00 -0700
Branch: REL_14_STABLE [9ab3b2bdb] 2022-05-02 18:25:59 -0700
Branch: REL_13_STABLE [57c5ad168] 2022-05-02 18:28:10 -0700
Branch: REL_12_STABLE [edfc03ec9] 2022-05-02 18:29:52 -0700
Branch: REL_11_STABLE [9cda785b4] 2022-05-02 18:30:15 -0700
Branch: REL_10_STABLE [cbc47ad7e] 2022-05-02 18:30:38 -0700
Author: Andres Freund <andres@anarazel.de>
Branch: REL_14_STABLE [f74496dd6] 2022-05-02 18:26:09 -0700
Branch: REL_13_STABLE [0446d3bf3] 2022-05-02 18:29:35 -0700
Branch: REL_12_STABLE [a5ede1391] 2022-05-02 18:29:52 -0700
Branch: REL_11_STABLE [25d5494e2] 2022-05-02 18:30:15 -0700
Branch: REL_10_STABLE [b1f35a36e] 2022-05-02 18:30:38 -0700
Author: Andres Freund <andres@anarazel.de>
Branch: REL_14_STABLE [5ab8e8014] 2022-05-02 18:09:42 -0700
Branch: REL_13_STABLE [90abe1e17] 2022-05-02 18:09:43 -0700
Branch: REL_12_STABLE [5c8b14a71] 2022-05-02 18:09:43 -0700
Branch: REL_11_STABLE [2adb8debe] 2022-05-02 18:09:44 -0700
Branch: REL_10_STABLE [e8a0cf9b2] 2022-05-02 18:09:44 -0700
-->
     <para>
      Fix possibility of self-deadlock in hot standby conflict handling
      (Andres Freund)
      <ulink url="&commit_baseurl;57c5ad168">&sect;</ulink>
      <ulink url="&commit_baseurl;0446d3bf3">&sect;</ulink>
      <ulink url="&commit_baseurl;90abe1e17">&sect;</ulink>
     </para>

     <para>
      With unlucky timing, the WAL-applying process could get stuck
      while waiting for some other process to release a buffer lock.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [c91f71b9d] 2022-03-16 18:05:58 +0100
Branch: REL_14_STABLE [677a1dc0c] 2022-03-16 18:06:27 +0100
Branch: REL_13_STABLE [27fafee72] 2022-03-16 18:14:33 +0100
-->
     <para>
      Fix possible mis-identification of the correct ancestor relation
      to publish logical replication changes through (Tomas Vondra, Hou
      zj, Amit Kapila)
      <ulink url="&commit_baseurl;27fafee72">&sect;</ulink>
     </para>

     <para>
      If <varname>publish_via_partition_root</varname> is enabled, and
      there are multiple publications naming different ancestors of the
      currently-modified relation, the wrong ancestor might be chosen for
      reporting the change.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [dd4ab6fd6] 2022-04-19 08:49:49 +0530
Branch: REL_14_STABLE [c9dea58e2] 2022-04-19 08:54:37 +0530
Branch: REL_13_STABLE [82d4a17a1] 2022-04-19 09:08:05 +0530
Branch: REL_12_STABLE [59348fbde] 2022-04-19 09:18:44 +0530
Branch: REL_11_STABLE [a90de822e] 2022-04-19 09:29:34 +0530
Branch: REL_10_STABLE [be46985be] 2022-04-19 09:38:25 +0530
-->
     <para>
      Ensure that logical replication apply workers can be restarted even
      when we're up against
      the <varname>max_sync_workers_per_subscription</varname> limit
      (Amit Kapila)
      <ulink url="&commit_baseurl;82d4a17a1">&sect;</ulink>
     </para>

     <para>
      Faulty coding of the limit check caused a restarted worker to exit
      immediately, leaving fewer workers than there should be.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [5e01001ff] 2022-02-14 08:55:58 +0530
Branch: REL_14_STABLE [04645bbca] 2022-02-14 08:07:46 +0530
Branch: REL_13_STABLE [caa231be9] 2022-02-14 08:24:44 +0530
Branch: REL_12_STABLE [ce349cf17] 2022-02-14 08:27:56 +0530
Branch: REL_11_STABLE [1cd5802ac] 2022-02-14 08:37:23 +0530
Branch: REL_10_STABLE [b5e060473] 2022-02-14 08:45:54 +0530
-->
     <para>
      Include unchanged replica identity key columns in the WAL log for an
      update, if they are stored out-of-line (Dilip Kumar, Amit Kapila)
      <ulink url="&commit_baseurl;caa231be9">&sect;</ulink>
     </para>

     <para>
      Otherwise subscribers cannot see the values and will fail to
      replicate the update.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [0fb6954aa] 2022-03-27 12:57:46 -0400
Branch: REL_14_STABLE [3f7a59c59] 2022-03-27 12:57:52 -0400
Branch: REL_13_STABLE [9016a2a3d] 2022-03-27 12:57:57 -0400
-->
     <para>
      Cope correctly with platforms that have no support for altering the
      server process's display in <application>ps(1)</application> (Andrew
      Dunstan)
      <ulink url="&commit_baseurl;9016a2a3d">&sect;</ulink>
     </para>

     <para>
      Few platforms are like this (the only supported one is Cygwin), so
      we'd managed not to notice that refactoring introduced a potential
      memory clobber.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [638300fef] 2022-02-25 17:40:43 -0500
Branch: REL_14_STABLE [ac910bb23] 2022-02-25 17:40:43 -0500
Branch: REL_13_STABLE [9b2d762a2] 2022-02-25 17:40:44 -0500
Branch: REL_12_STABLE [0f7b62f29] 2022-02-25 17:40:45 -0500
Branch: REL_11_STABLE [31befa6be] 2022-02-25 17:40:45 -0500
Branch: REL_10_STABLE [4936747c4] 2022-02-25 17:40:21 -0500
-->
     <para>
      Disallow execution of SPI functions during PL/Perl function
      compilation (Tom Lane)
      <ulink url="&commit_baseurl;9b2d762a2">&sect;</ulink>
     </para>

     <para>
      Perl can be convinced to execute user-defined code during compilation
      of a PL/Perl function.  However, it's not okay for such code to try
      to invoke SQL operations via SPI.  That results in a crash, and if
      it didn't crash it would be a security hazard, because we really
      don't want code execution during function validation.  Put in a
      check to give a friendlier error message instead.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a59c79564] 2022-02-28 14:12:52 -0500
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [50f03473e] 2022-03-02 11:29:11 -0500
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL_14_STABLE [2a1f84636] 2022-03-02 11:57:02 -0500
Branch: REL_13_STABLE [6599d8f12] 2022-03-02 11:57:02 -0500
Branch: REL_12_STABLE [72918ea86] 2022-03-02 11:57:02 -0500
Branch: REL_11_STABLE [5bb3d91ea] 2022-03-02 11:57:02 -0500
Branch: REL_10_STABLE [9050999ef] 2022-03-02 11:57:02 -0500
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [878e64d0f] 2022-03-31 11:24:26 -0400
Branch: REL_14_STABLE [402279afe] 2022-03-31 11:24:26 -0400
Branch: REL_13_STABLE [fb1d7f451] 2022-03-31 11:24:26 -0400
Branch: REL_12_STABLE [fcaf7d725] 2022-03-31 11:24:26 -0400
Branch: REL_11_STABLE [143043191] 2022-03-31 11:24:26 -0400
Branch: REL_10_STABLE [a6bd1f0ee] 2022-03-31 11:24:26 -0400
-->
     <para>
      Make <application>libpq</application> accept root-owned SSL private
      key files (David Steele)
      <ulink url="&commit_baseurl;6599d8f12">&sect;</ulink>
      <ulink url="&commit_baseurl;fb1d7f451">&sect;</ulink>
     </para>

     <para>
      This change synchronizes <application>libpq</application>'s rules
      for safe ownership and permissions of SSL key files with the rules
      the server has used since release 9.6.  Namely, in addition to the
      current rules, allow the case where the key file is owned by root
      and has permissions <literal>rw-r-----</literal> or less.  This is
      helpful for system-wide management of key files.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [335fa5a26] 2022-02-12 13:23:20 -0500
Branch: REL_14_STABLE [ae27b1acc] 2022-02-12 13:23:20 -0500
Branch: REL_13_STABLE [51ee561f5] 2022-02-12 13:23:20 -0500
Branch: REL_12_STABLE [c9d35dc7f] 2022-02-12 13:23:20 -0500
-->
     <para>
      Fix behavior of <application>libpq</application>'s
      <function>PQisBusy()</function> function after a connection failure
      (Tom Lane)
      <ulink url="&commit_baseurl;51ee561f5">&sect;</ulink>
     </para>

     <para>
      If we'd detected a write failure, <function>PQisBusy()</function>
      would always return true, which is the wrong thing: we want input
      processing to carry on normally until we've read whatever is
      available from the server.  The practical effect of this error is
      that applications using <application>libpq</application>'s
      async-query API would typically detect connection loss only
      when <function>PQconsumeInput()</function> returns a hard failure.
      With this fix, a connection loss will normally be reported via an
      error <structname>PGresult</structname> object, which is a much
      cleaner behavior for most applications.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a745b9365] 2022-02-10 16:49:39 -0500
Branch: REL_14_STABLE [1e8c5cf7c] 2022-02-10 16:49:39 -0500
Branch: REL_13_STABLE [d0e1fd958] 2022-02-10 16:49:39 -0500
Branch: REL_12_STABLE [61c20a5ea] 2022-02-10 16:49:39 -0500
Branch: REL_11_STABLE [69cc15c31] 2022-02-10 16:49:39 -0500
Branch: REL_10_STABLE [34523933b] 2022-02-10 16:49:39 -0500
-->
     <para>
      Make <application>pg_ctl</application> recheck postmaster aliveness
      while waiting for stop/restart/promote actions (Tom Lane)
      <ulink url="&commit_baseurl;d0e1fd958">&sect;</ulink>
     </para>

     <para>
      <application>pg_ctl</application> would verify that the postmaster
      is alive as a side-effect of sending the stop or promote signal, but
      then it just naively waited to see the on-disk state change.  If the
      postmaster died uncleanly without having removed its PID file or
      updated the control file, <application>pg_ctl</application> would
      wait until timeout.  Instead make it recheck every so often that the
      postmaster process is still there.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [cd83cb953] 2022-02-25 10:30:05 -0800
Branch: REL_14_STABLE [9ff7fd906] 2022-02-25 10:31:16 -0800
Branch: REL_13_STABLE [0b1020a96] 2022-02-25 10:32:38 -0800
Branch: REL_12_STABLE [5407241a8] 2022-02-25 10:34:38 -0800
Branch: REL_11_STABLE [51c341656] 2022-02-25 10:40:32 -0800
Author: Andres Freund <andres@anarazel.de>
Branch: master [264d28492] 2022-03-27 18:13:50 -0700
Branch: REL_14_STABLE [6839aa7a6] 2022-03-27 18:15:10 -0700
Branch: REL_13_STABLE [344d89abf] 2022-03-27 18:15:14 -0700
Branch: REL_12_STABLE [5ebd262dc] 2022-03-27 18:15:15 -0700
Branch: REL_11_STABLE [7d935bdf7] 2022-03-27 18:15:17 -0700
-->
     <para>
      Fix error handling in <application>pg_waldump</application> (Kyotaro
      Horiguchi, Andres Freund)
      <ulink url="&commit_baseurl;0b1020a96">&sect;</ulink>
      <ulink url="&commit_baseurl;344d89abf">&sect;</ulink>
     </para>

     <para>
      While trying to read a WAL file to determine the WAL segment size,
      <application>pg_waldump</application> would report an incorrect
      error for the case of a too-short file.  In addition, the file name
      reported in this and related error messages could be garbage.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [cd4868a57] 2022-04-14 15:08:03 +0900
Branch: REL_14_STABLE [df6bbe73b] 2022-04-14 15:09:26 +0900
Branch: REL_13_STABLE [2275d044d] 2022-04-14 15:09:36 +0900
Branch: REL_12_STABLE [5378d55cb] 2022-04-14 15:09:39 +0900
Branch: REL_11_STABLE [79fed072b] 2022-04-14 15:09:42 +0900
Branch: REL_10_STABLE [12d32b7bc] 2022-04-14 15:09:46 +0900
-->
     <para>
      Ensure that <filename>contrib/pageinspect</filename> functions cope
      with all-zero pages (Michael Paquier)
      <ulink url="&commit_baseurl;2275d044d">&sect;</ulink>
     </para>

     <para>
      This is a legitimate edge case, but the module was mostly unprepared
      for it.  Arrange to return nulls, or no rows, as appropriate; that
      seems more useful than raising an error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [291e517a4] 2022-03-27 17:53:40 +0900
Branch: REL_14_STABLE [27d384441] 2022-03-27 17:53:51 +0900
Branch: REL_13_STABLE [3d4d6dee0] 2022-03-27 17:53:55 +0900
Branch: REL_12_STABLE [5ca2aa2f2] 2022-03-27 17:53:59 +0900
Branch: REL_11_STABLE [1a2fdf86a] 2022-03-27 17:54:03 +0900
Branch: REL_10_STABLE [ab80b0fbb] 2022-03-27 17:54:08 +0900
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [076f4d953] 2022-03-16 11:19:39 +0900
Branch: REL_14_STABLE [b61e6214c] 2022-03-16 11:20:47 +0900
Branch: REL_13_STABLE [d3a9b83c3] 2022-03-16 11:20:51 +0900
Branch: REL_12_STABLE [af8a8eb54] 2022-03-16 11:20:54 +0900
Branch: REL_11_STABLE [2389ee8dd] 2022-03-16 11:20:57 +0900
Branch: REL_10_STABLE [c42b88932] 2022-03-16 11:21:00 +0900
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [4477dcb20] 2022-03-16 12:29:39 +0900
Branch: REL_14_STABLE [dc5b3bdae] 2022-03-16 12:29:47 +0900
Branch: REL_13_STABLE [028a3c6b1] 2022-03-16 12:29:55 +0900
Branch: REL_12_STABLE [5cb770210] 2022-03-16 12:29:59 +0900
Branch: REL_11_STABLE [09c97746d] 2022-03-16 12:30:02 +0900
Branch: REL_10_STABLE [07e343513] 2022-03-16 12:30:07 +0900
-->
     <para>
      In <filename>contrib/pageinspect</filename>, add defenses against
      incorrect page <quote>special space</quote> contents, tighten checks
      for correct page size, and add some missing checks that an index is
      of the expected type (Michael Paquier, Justin Pryzby, Julien
      Rouhaud)
      <ulink url="&commit_baseurl;3d4d6dee0">&sect;</ulink>
      <ulink url="&commit_baseurl;d3a9b83c3">&sect;</ulink>
      <ulink url="&commit_baseurl;028a3c6b1">&sect;</ulink>
     </para>

     <para>
      These changes make it less likely that the module will crash on bad
      data.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [f3dd9fe1d] 2022-03-31 14:29:48 -0400
Branch: REL_14_STABLE [9f9489aa2] 2022-03-31 14:29:24 -0400
Branch: REL_13_STABLE [79df1d20c] 2022-03-31 14:29:24 -0400
Branch: REL_12_STABLE [989d3e4a2] 2022-03-31 14:29:24 -0400
Branch: REL_11_STABLE [b9eb0412f] 2022-03-31 14:29:24 -0400
Branch: REL_10_STABLE [728fc0f9a] 2022-03-31 14:29:24 -0400
-->
     <para>
      In <filename>contrib/postgres_fdw</filename>, verify
      that <literal>ORDER BY</literal> clauses are safe to ship before
      requesting a remotely-ordered query, and include
      a <literal>USING</literal> clause if necessary (Ronan Dunklau)
      <ulink url="&commit_baseurl;79df1d20c">&sect;</ulink>
     </para>

     <para>
      This fix prevents situations where the remote server might sort in a
      different order than we intend.  While sometimes that would be only
      cosmetic, it could produce thoroughly wrong results if the remote
      data is used as input for a locally-performed merge join.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [e6a760020] 2021-09-27 10:53:20 +1300
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [807fee1a3] 2022-02-04 16:16:10 +1300
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [a56e7b660] 2022-03-16 10:30:55 +1300
Author: Thomas Munro <tmunro@postgresql.org>
Branch: REL_14_STABLE [d9f7ad54e] 2022-03-16 11:42:00 +1300
Branch: REL_13_STABLE [5610411ac] 2022-03-16 11:41:13 +1300
Branch: REL_12_STABLE [45a469eb2] 2022-03-16 11:40:43 +1300
Branch: REL_11_STABLE [986d24042] 2022-03-16 11:35:00 +1300
-->
     <para>
      Update <acronym>JIT</acronym> code to work with LLVM 14
      (Thomas Munro)
      <ulink url="&commit_baseurl;5610411ac">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [46ab07ffd] 2022-03-03 18:13:24 -0500
Branch: REL_14_STABLE [b0bc196e5] 2022-03-03 18:13:24 -0500
Branch: REL_13_STABLE [1a027e6b7] 2022-03-03 18:13:24 -0500
Branch: REL_12_STABLE [f727b6ea8] 2022-03-03 18:13:24 -0500
Branch: REL_11_STABLE [f2087e26e] 2022-03-03 18:13:24 -0500
Branch: REL_10_STABLE [cfbe87bd6] 2022-03-03 18:13:24 -0500
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [0fbdfaf79] 2022-03-03 19:03:17 -0500
Branch: REL_14_STABLE [5c9d17e94] 2022-03-03 19:03:35 -0500
Branch: REL_13_STABLE [97031f440] 2022-03-03 19:03:42 -0500
Branch: REL_12_STABLE [4b0696b36] 2022-03-03 19:03:46 -0500
Branch: REL_11_STABLE [566e1c04d] 2022-03-03 19:03:50 -0500
Branch: REL_10_STABLE [18c04d157] 2022-03-03 19:03:55 -0500
Author: Andres Freund <andres@anarazel.de>
Branch: master [3ac7d0241] 2022-03-23 13:05:59 -0700
Branch: REL_14_STABLE [81045e1e1] 2022-03-23 13:18:02 -0700
Branch: REL_13_STABLE [c0f99bb52] 2022-03-23 13:18:00 -0700
Branch: REL_12_STABLE [61a007fee] 2022-03-23 13:17:59 -0700
Author: Andres Freund <andres@anarazel.de>
Branch: master [1c6bb380e] 2022-03-23 13:05:25 -0700
Branch: REL_14_STABLE [89a94c24a] 2022-03-23 13:13:18 -0700
Branch: REL_13_STABLE [8014c61eb] 2022-03-23 13:13:20 -0700
Branch: REL_12_STABLE [c5b60a68c] 2022-03-23 13:13:33 -0700
Branch: REL_11_STABLE [2121d5809] 2022-03-23 13:13:40 -0700
Branch: REL_10_STABLE [5f4615b9d] 2022-03-23 13:13:49 -0700
Author: Andres Freund <andres@anarazel.de>
Branch: master [e71c76fca] 2022-03-23 12:43:14 -0700
Branch: REL_14_STABLE [e52e9bd57] 2022-03-23 12:43:41 -0700
Branch: REL_13_STABLE [7c163aa93] 2022-03-23 12:43:40 -0700
Branch: REL_12_STABLE [6a767bc2e] 2022-03-23 12:43:38 -0700
Branch: REL_11_STABLE [a77dddb42] 2022-03-23 12:43:36 -0700
Branch: REL_10_STABLE [2a9193726] 2022-03-23 12:43:33 -0700
-->
     <para>
      Clean up assorted failures under <productname>clang</productname>'s
      <literal>-fsanitize=undefined</literal> checks (Tom Lane, Andres
      Freund, Zhihong Yu)
      <ulink url="&commit_baseurl;1a027e6b7">&sect;</ulink>
      <ulink url="&commit_baseurl;97031f440">&sect;</ulink>
      <ulink url="&commit_baseurl;c0f99bb52">&sect;</ulink>
      <ulink url="&commit_baseurl;8014c61eb">&sect;</ulink>
      <ulink url="&commit_baseurl;7c163aa93">&sect;</ulink>
     </para>

     <para>
      Most of these changes are just for pro-forma compliance with the
      letter of the C and POSIX standards, and are unlikely to have any
      effect on production builds.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d5c2a91e5] 2022-02-08 19:25:56 -0500
Branch: REL_14_STABLE [e327291e4] 2022-02-08 19:26:09 -0500
Branch: REL_13_STABLE [5ea3b99de] 2022-02-08 19:26:17 -0500
Branch: REL_12_STABLE [eba0f095c] 2022-02-08 19:26:22 -0500
Branch: REL_11_STABLE [3a6e3a890] 2022-02-08 19:26:26 -0500
Branch: REL_10_STABLE [1a8b6f055] 2022-02-08 19:26:30 -0500
-->
     <para>
      Fix PL/Perl so it builds on C compilers that don't support statements
      nested within expressions (Tom Lane)
      <ulink url="&commit_baseurl;5ea3b99de">&sect;</ulink>
     </para>

     <para>
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [097786fbb] 2022-03-22 08:22:02 -0700
Branch: REL_14_STABLE [2d608c960] 2022-03-22 08:28:51 -0700
Branch: REL_13_STABLE [f183e23cc] 2022-03-22 08:28:52 -0700
Branch: REL_12_STABLE [4553b960f] 2022-03-22 08:28:53 -0700
Branch: REL_11_STABLE [cd1951ba0] 2022-03-22 08:28:54 -0700
Branch: REL_10_STABLE [083031aa9] 2022-03-22 08:28:55 -0700
-->
     <para>
      Fix possible build failure of <application>pg_dumpall</application>
      on Windows, when not using MSVC to build (Andres Freund)
      <ulink url="&commit_baseurl;f183e23cc">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master [ea09a75e1] 2022-02-10 13:44:05 -0500
Branch: REL_14_STABLE [92f60f536] 2022-02-10 13:51:19 -0500
Branch: REL_13_STABLE [eec7c640f] 2022-02-10 13:51:40 -0500
Branch: REL_12_STABLE [64dd64807] 2022-02-10 13:51:49 -0500
Branch: REL_11_STABLE [e2d104e19] 2022-02-10 13:51:59 -0500
Branch: REL_10_STABLE [a5eef80c2] 2022-02-10 13:52:05 -0500
Branch: REL9_6_STABLE [622ab6a34] 2022-02-10 13:52:37 -0500
Branch: REL9_5_STABLE [3a5034b5e] 2022-02-10 13:53:56 -0500
Branch: REL9_4_STABLE [c76164ea0] 2022-02-10 13:56:55 -0500
-->
     <para>
      In Windows builds, use <application>gendef</application> instead
      of <application>pexports</application> to build DEF files (Andrew
      Dunstan)
      <ulink url="&commit_baseurl;eec7c640f">&sect;</ulink>
     </para>

     <para>
      This adapts the build process to work on recent MSys tool chains.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master [b787c554c] 2022-04-25 15:47:55 -0400
Branch: REL_14_STABLE [71f394667] 2022-04-25 15:49:35 -0400
Branch: REL_13_STABLE [d9cede2c3] 2022-04-25 15:50:01 -0400
Branch: REL_12_STABLE [01f2bc5af] 2022-04-25 15:50:07 -0400
Branch: REL_11_STABLE [b90ce0dd7] 2022-04-25 15:51:27 -0400
Branch: REL_10_STABLE [58887d58c] 2022-04-25 15:51:58 -0400
-->
     <para>
      Prevent extra expansion of shell wildcard patterns in programs built
      under MinGW (Andrew Dunstan)
      <ulink url="&commit_baseurl;d9cede2c3">&sect;</ulink>
     </para>

     <para>
      For some reason the C library provided by MinGW will expand shell
      wildcard characters in a program's command-line arguments by
      default.  This is confusing, not least because it doesn't happen
      under MSVC, so turn it off.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ab3479bf5] 2022-05-05 14:54:53 -0400
Branch: REL_14_STABLE [77ee14ed9] 2022-05-05 14:55:03 -0400
Branch: REL_13_STABLE [e9735d1af] 2022-05-05 14:55:10 -0400
Branch: REL_12_STABLE [2bb9f7501] 2022-05-05 14:55:17 -0400
Branch: REL_11_STABLE [da72ff09b] 2022-05-05 14:55:22 -0400
Branch: REL_10_STABLE [bc334ec9f] 2022-05-05 14:55:30 -0400
-->
     <para>
      Update time zone data files to <application>tzdata</application>
      release 2022a for DST law changes in Palestine, plus historical
      corrections for Chile and Ukraine. (Tom Lane)
      <ulink url="&commit_baseurl;e9735d1af">&sect;</ulink>
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-6">
  <title>Release 13.6</title>

  <formalpara>
  <title>Release date:</title>
  <para>2022-02-10</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.5.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.6</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you have applied <command>REINDEX CONCURRENTLY</command>
    to a TOAST table's index, or observe failures to access TOAST datums,
    see the first changelog entry below.
   </para>

   <para>
    Also, if you are upgrading from a version earlier than 13.5,
    see <xref linkend="release-13-5"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [f99870dd8] 2021-12-08 11:01:08 +0900
Branch: REL_14_STABLE [64ab21f0e] 2021-12-08 11:01:14 +0900
Branch: REL_13_STABLE [9acea52ea] 2021-12-08 11:01:19 +0900
Branch: REL_12_STABLE [5ed74d874] 2021-12-08 11:01:23 +0900
-->
     <para>
      Enforce standard locking protocol for TOAST table updates, to prevent
      problems with <command>REINDEX CONCURRENTLY</command> (Michael Paquier)
      <ulink url="&commit_baseurl;9acea52ea">&sect;</ulink>
     </para>

     <para>
      If applied to a TOAST table or TOAST table's index, <command>REINDEX
      CONCURRENTLY</command> tended to produce a corrupted index.  This
      happened because sessions updating TOAST entries released
      their <literal>ROW EXCLUSIVE</literal> locks immediately, rather
      than holding them until transaction commit as all other updates do.
      The fix is to make TOAST updates hold the table lock according to the
      normal rule.  Any existing corrupted indexes can be repaired by
      reindexing again.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [6d554e3fc] 2022-01-23 03:16:31 +0100
Branch: REL_14_STABLE [a192243c7] 2022-01-23 03:18:02 +0100
Branch: REL_13_STABLE [267ccc38b] 2022-01-23 03:20:32 +0100
-->
     <para>
      Avoid null-pointer crash in <command>ALTER STATISTICS</command>
      when the statistics object is dropped concurrently (Tomas Vondra)
      <ulink url="&commit_baseurl;267ccc38b">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [f9a74c149] 2022-01-25 21:10:03 +1300
Branch: REL_14_STABLE [357ff6615] 2022-01-25 21:14:27 +1300
Branch: REL_13_STABLE [f8807e774] 2022-01-25 21:15:00 +1300
Branch: REL_12_STABLE [2ccd8fb29] 2022-01-25 21:15:40 +1300
-->
     <para>
      Fix incorrect plan creation for parallel single-child Append nodes
      (David Rowley)
      <ulink url="&commit_baseurl;f8807e774">&sect;</ulink>
     </para>

     <para>
      In some cases the Append would be simplified away when it should not
      be, leading to wrong query results (duplicated rows).
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [4ace45677] 2022-01-01 16:12:03 -0500
Branch: REL_14_STABLE [cabea571d] 2022-01-01 16:12:03 -0500
Branch: REL_13_STABLE [45ae42714] 2022-01-01 16:12:03 -0500
Branch: REL_12_STABLE [f789b7732] 2022-01-01 16:12:03 -0500
Branch: REL_11_STABLE [e3a4c7981] 2022-01-01 16:12:03 -0500
Branch: REL_10_STABLE [70a31a0e3] 2022-01-01 16:12:03 -0500
Branch: master [9a3ddeb51] 2022-01-03 15:42:27 -0500
Branch: REL_14_STABLE [d228af79d] 2022-01-03 15:42:27 -0500
Branch: REL_13_STABLE [20d08b2c6] 2022-01-03 15:42:27 -0500
Branch: REL_12_STABLE [9c4f38908] 2022-01-03 15:42:27 -0500
Branch: REL_11_STABLE [ec3674521] 2022-01-03 15:42:27 -0500
Branch: REL_10_STABLE [7d344f004] 2022-01-03 15:42:27 -0500
-->
     <para>
      Fix index-only scan plans for cases where not all index columns can
      be returned (Tom Lane)
      <ulink url="&commit_baseurl;45ae42714">&sect;</ulink>
      <ulink url="&commit_baseurl;20d08b2c6">&sect;</ulink>
     </para>

     <para>
      If an index has both returnable and non-returnable columns, and one
      of the non-returnable columns is an expression using a table column
      that appears in a returnable index column, then a query using that
      expression could result in an index-only scan plan that attempts to
      read the non-returnable column, instead of recomputing the
      expression from the returnable column as intended.  The
      non-returnable column would read as NULL, resulting in wrong query
      results.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9c356f4b2] 2021-12-16 15:36:02 -0500
Branch: REL_14_STABLE [f9a8bc9f2] 2021-12-16 15:36:02 -0500
Branch: REL_13_STABLE [da0d8a454] 2021-12-16 15:36:02 -0500
Branch: REL_12_STABLE [e1fd61c8c] 2021-12-16 15:36:02 -0500
Branch: REL_11_STABLE [c43d72b24] 2021-12-16 15:36:02 -0500
Branch: REL_10_STABLE [1acf34586] 2021-12-16 15:36:02 -0500
-->
     <para>
      Ensure that casting to an unspecified typmod generates a RelabelType
      node rather than a length-coercion function call (Tom Lane)
      <ulink url="&commit_baseurl;da0d8a454">&sect;</ulink>
     </para>

     <para>
      While the coercion function should do the right thing (nothing),
      this translation is undesirably inefficient.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [8e2e0f758] 2022-01-29 11:41:18 -0500
Branch: REL_14_STABLE [c025067f6] 2022-01-29 11:41:18 -0500
Branch: REL_13_STABLE [5ad70564f] 2022-01-29 11:41:12 -0500
-->
     <para>
      Fix checking of <type>anycompatible</type>-family data type matches
      (Tom Lane)
      <ulink url="&commit_baseurl;5ad70564f">&sect;</ulink>
     </para>

     <para>
      In some cases the parser would think that a function or operator
      with <type>anycompatible</type>-family polymorphic parameters
      matches a set of arguments that it really shouldn't match.  In
      reported cases, that led to matching more than one operator to a
      call, leading to ambiguous-operator errors; but a failure later on
      is also possible.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [44bd3ed33] 2021-11-26 11:14:27 -0300
Branch: REL_14_STABLE [d24dac954] 2021-11-26 11:14:27 -0300
Branch: REL_13_STABLE [ef41c3fd6] 2021-11-26 11:14:27 -0300
Branch: REL_12_STABLE [9c6ab1ef3] 2021-11-26 11:14:27 -0300
Branch: REL_11_STABLE [2c3fddcbb] 2021-11-26 11:14:27 -0300
Branch: REL_10_STABLE [72cf39d51] 2021-11-26 11:14:27 -0300
-->
     <para>
      Fix WAL replay failure when database consistency is reached exactly
      at a WAL page boundary (&Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;ef41c3fd6">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [f192e1bdf] 2022-01-27 20:13:55 +0100
Branch: REL_14_STABLE [fb2f8e534] 2022-01-27 20:15:37 +0100
Branch: REL_13_STABLE [e90f258ac] 2022-01-27 20:16:39 +0100
Branch: REL_12_STABLE [4b8af2bf8] 2022-01-27 20:17:36 +0100
Branch: REL_11_STABLE [5cb88648e] 2022-01-27 20:18:22 +0100
Branch: REL_10_STABLE [4ef38fbe8] 2022-01-27 20:19:39 +0100
-->
     <para>
      Fix startup of a physical replica to tolerate transaction ID
      wraparound (Abhijit Menon-Sen, Tomas Vondra)
      <ulink url="&commit_baseurl;e90f258ac">&sect;</ulink>
     </para>

     <para>
      If a replica server is started while the set of active transactions
      on the primary crosses a wraparound boundary (so that there are some
      newer transactions with smaller XIDs than older ones), the replica
      would fail with <quote>out-of-order XID insertion in
      KnownAssignedXids</quote>.  The replica would retry, but could never
      get past that error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [5e97905a2] 2021-12-09 08:36:59 +0530
Branch: REL_14_STABLE [614b77d65] 2021-12-09 08:49:50 +0530
Branch: REL_13_STABLE [3f06c00cf] 2021-12-09 09:00:35 +0530
-->
     <para>
      In logical replication, avoid double transmission of a child table's
      data (Hou Zhijie)
      <ulink url="&commit_baseurl;3f06c00cf">&sect;</ulink>
     </para>

     <para>
      If a publication includes both child and parent tables, and has
      the <literal>publish_via_partition_root</literal> option set,
      subscribers uselessly initiated synchronization on both child and
      parent tables.  Ensure that only the parent table is synchronized in
      such cases.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [6aa518614] 2022-01-24 15:33:38 -0500
Branch: REL_14_STABLE [1efcc5946] 2022-01-24 15:33:34 -0500
Branch: REL_13_STABLE [d67354d87] 2022-01-24 15:33:34 -0500
Branch: REL_12_STABLE [689f75d6e] 2022-01-24 15:33:34 -0500
Branch: REL_11_STABLE [4ec54498c] 2022-01-24 15:33:34 -0500
Branch: REL_10_STABLE [9af6d4b5a] 2022-01-24 15:33:34 -0500
Branch: master [3c06ec6d1] 2022-01-24 12:09:46 -0500
Branch: REL_14_STABLE [ef9706bbc] 2022-01-24 12:09:46 -0500
Branch: REL_13_STABLE [c94c6612d] 2022-01-24 12:09:46 -0500
Branch: REL_12_STABLE [a8ce5c8d7] 2022-01-24 12:09:46 -0500
Branch: REL_11_STABLE [449a69623] 2022-01-24 12:09:46 -0500
Branch: REL_10_STABLE [daf658982] 2022-01-24 12:09:46 -0500
-->
     <para>
      Remove lexical limitations for SQL commands issued on a logical
      replication connection (Tom Lane)
      <ulink url="&commit_baseurl;d67354d87">&sect;</ulink>
      <ulink url="&commit_baseurl;c94c6612d">&sect;</ulink>
     </para>

     <para>
      The walsender process would fail for a SQL command containing an
      unquoted semicolon, or with dollar-quoted literals containing odd
      numbers of single or double quote marks, or when the SQL command
      starts with a comment.  Moreover, faulty error recovery could lead
      to unexpected errors in later commands too.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [237d1f317] 2022-01-21 14:54:04 +0900
Branch: REL_14_STABLE [84db5169d] 2022-01-21 14:54:47 +0900
Branch: REL_13_STABLE [b5f634116] 2022-01-21 14:54:51 +0900
Branch: REL_12_STABLE [1c0452c48] 2022-01-21 14:54:55 +0900
Branch: REL_11_STABLE [0ffe2975c] 2022-01-21 14:54:59 +0900
Branch: REL_10_STABLE [919be95c6] 2022-01-21 14:55:04 +0900
-->
     <para>
      Fix possible loss of the commit timestamp for the last
      subtransaction of a transaction (Alex Kingsborough, Kyotaro Horiguchi)
      <ulink url="&commit_baseurl;b5f634116">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [1fabec7d7] 2022-01-21 11:22:55 -0800
Branch: REL_14_STABLE [2b7dbe4bd] 2022-01-21 11:24:12 -0800
Branch: REL_13_STABLE [fd48e5f5d] 2022-01-21 11:24:12 -0800
Branch: REL_12_STABLE [1c6d055ba] 2022-01-21 11:24:12 -0800
Branch: REL_11_STABLE [2c15b29f7] 2022-01-21 11:24:12 -0800
Branch: REL_10_STABLE [f862cc09f] 2022-01-21 11:24:12 -0800
-->
     <para>
      Be sure to <function>fsync</function>
      the <filename>pg_logical/mappings</filename> subdirectory during
      checkpoints (Nathan Bossart)
      <ulink url="&commit_baseurl;fd48e5f5d">&sect;</ulink>
     </para>

     <para>
      On some filesystems this oversight could lead to losing logical
      rewrite status files after a system crash.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [20b9fa308] 2022-01-15 19:06:48 +0100
Branch: REL_14_STABLE [ea212bd95] 2022-01-15 19:05:22 +0100
Branch: REL_13_STABLE [d6817032d] 2022-01-15 19:14:00 +0100
Branch: REL_12_STABLE [9d1bcf5dc] 2022-01-15 19:02:58 +0100
Branch: REL_11_STABLE [491182e52] 2022-01-15 18:32:20 +0100
Branch: REL_10_STABLE [9211c2e38] 2022-01-15 18:30:45 +0100
-->
     <para>
      Build extended statistics for partitioned tables (Justin Pryzby)
      <ulink url="&commit_baseurl;d6817032d">&sect;</ulink>
     </para>

     <para>
      A previous bug fix disabled building of extended statistics for
      old-style inheritance trees, but it also prevented building them for
      partitioned tables, which was an unnecessary restriction.
      This change allows <command>ANALYZE</command> to compute values for
      statistics objects for partitioned tables.  (But note that
      autovacuum does not process partitioned tables as such, so you must
      periodically issue manual <command>ANALYZE</command> on the
      partitioned table if you want to maintain such statistics.)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [36c4bc6e7] 2022-01-15 02:20:54 +0100
Branch: REL_14_STABLE [2cc007fd0] 2022-01-15 02:26:26 +0100
Branch: REL_13_STABLE [acfde7c58] 2022-01-15 02:30:06 +0100
Branch: REL_12_STABLE [76569ad6f] 2022-01-15 03:14:55 +0100
Branch: REL_11_STABLE [b3cac25f4] 2022-01-15 02:40:40 +0100
Branch: REL_10_STABLE [ff0e7c7e8] 2022-01-15 03:05:06 +0100
-->
     <para>
      Ignore extended statistics for inheritance trees (Justin Pryzby)
      <ulink url="&commit_baseurl;acfde7c58">&sect;</ulink>
     </para>

     <para>
      Currently, extended statistics values are only computed locally for
      each table, not for entire inheritance trees.  However the values
      were mistakenly consulted when planning queries across inheritance
      trees, possibly resulting in worse-than-default estimates.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [7ead9925f] 2022-01-06 16:46:46 -0500
Branch: REL_14_STABLE [f285d9583] 2022-01-06 16:46:46 -0500
Branch: REL_13_STABLE [86d4bbb56] 2022-01-06 16:46:46 -0500
Branch: REL_12_STABLE [ccc7c3ad8] 2022-01-06 16:46:46 -0500
Branch: REL_11_STABLE [2ce113a4f] 2022-01-06 16:46:46 -0500
Branch: REL_10_STABLE [e5b044c84] 2022-01-06 16:46:46 -0500
-->
     <para>
      Disallow altering data type of a partitioned table's columns when
      the partitioned table's row type is used as a composite type
      elsewhere (Tom Lane)
      <ulink url="&commit_baseurl;86d4bbb56">&sect;</ulink>
     </para>

     <para>
      This restriction has long existed for regular tables, but through an
      oversight it was not checked for partitioned tables.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [f0d43947a] 2021-11-25 15:04:56 +0900
Branch: REL_14_STABLE [e415916e2] 2021-11-25 15:05:24 +0900
Branch: REL_13_STABLE [37827de43] 2021-11-25 15:05:28 +0900
Branch: REL_12_STABLE [216156fec] 2021-11-25 15:05:31 +0900
Branch: REL_11_STABLE [dffe80e55] 2021-11-25 15:05:34 +0900
Branch: REL_10_STABLE [817c469c2] 2021-11-25 15:05:37 +0900
-->
     <para>
      Disallow <literal>ALTER TABLE ... DROP NOT NULL</literal> for a
      column that is part of a replica identity index (Haiying Tang, Hou
      Zhijie)
      <ulink url="&commit_baseurl;37827de43">&sect;</ulink>
     </para>

     <para>
      The same prohibition already existed for primary key indexes.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d8fbbb925] 2022-01-22 13:32:40 -0500
Branch: REL_14_STABLE [3839e29c5] 2022-01-22 13:32:40 -0500
Branch: REL_13_STABLE [31b7b4d26] 2022-01-22 13:32:40 -0500
Branch: REL_12_STABLE [e2d53c876] 2022-01-22 13:32:40 -0500
Branch: REL_11_STABLE [26c841ed1] 2022-01-22 13:32:40 -0500
-->
     <para>
      Correctly update cached table state during <command>ALTER TABLE ADD
      PRIMARY KEY USING INDEX</command> (Hou Zhijie)
      <ulink url="&commit_baseurl;31b7b4d26">&sect;</ulink>
     </para>

     <para>
      Concurrent sessions failed to update their opinion of whether the
      table has a primary key, possibly causing incorrect logical
      replication behavior.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [354a1f8d2] 2021-11-16 08:10:13 +0530
Branch: REL_14_STABLE [232fd72a5] 2021-11-16 08:34:24 +0530
Branch: REL_13_STABLE [63c3eeddc] 2021-11-16 08:46:12 +0530
Branch: REL_12_STABLE [9816e2d31] 2021-11-16 09:05:51 +0530
Branch: REL_11_STABLE [40fb634b1] 2021-11-16 09:25:04 +0530
Branch: REL_10_STABLE [2c0443c59] 2021-11-16 09:44:00 +0530
-->
     <para>
      Correctly update cached table state when switching <literal>REPLICA
      IDENTITY</literal> index (Tang Haiying, Hou Zhijie)
      <ulink url="&commit_baseurl;63c3eeddc">&sect;</ulink>
     </para>

     <para>
      Concurrent sessions failed to update their opinion of which index is
      the replica identity one, possibly causing incorrect logical
      replication behavior.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [0f0cfb494] 2021-11-19 09:04:40 +0530
Branch: REL_14_STABLE [ead49ebc0] 2021-11-19 09:14:09 +0530
Branch: REL_13_STABLE [33b6dd83e] 2021-11-19 09:24:00 +0530
-->
     <para>
      Allow parallel vacuuming and concurrent index building to be ignored
      while computing oldest xmin (Masahiko Sawada)
      <ulink url="&commit_baseurl;33b6dd83e">&sect;</ulink>
     </para>

     <para>
      Non-parallelized instances of these operations were already ignored,
      but the logic did not work for parallelized cases.  Holding back the
      xmin horizon has undesirable effects such as delaying vacuum
      cleanup.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [babe545ca] 2021-12-01 13:44:46 -0500
Branch: REL_14_STABLE [8f4b0200e] 2021-12-01 13:44:47 -0500
Branch: REL_13_STABLE [7413caabe] 2021-12-01 13:44:47 -0500
Branch: REL_12_STABLE [5cf08b4db] 2021-12-01 13:44:47 -0500
Branch: REL_11_STABLE [82d354411] 2021-12-01 13:44:47 -0500
Branch: REL_10_STABLE [fec187dc3] 2021-12-01 13:44:47 -0500
-->
     <para>
      Avoid leaking memory during <command>REASSIGN OWNED BY</command>
      operations that reassign ownership of many objects (Justin Pryzby)
      <ulink url="&commit_baseurl;7413caabe">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [6ce16088b] 2022-01-05 10:27:07 +0900
Branch: REL_14_STABLE [5ddfebded] 2022-01-05 10:27:47 +0900
Branch: REL_13_STABLE [3f8062bcf] 2022-01-05 10:27:53 +0900
-->
     <para>
      Improve performance of walsenders sending logical changes by
      avoiding unnecessary cache accesses (Hou Zhijie)
      <ulink url="&commit_baseurl;3f8062bcf">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Magnus Hagander <magnus@hagander.net>
Branch: master [2dbb7b9b2] 2022-01-26 09:58:59 +0100
Branch: REL_14_STABLE [4afae689e] 2022-01-26 09:59:14 +0100
Branch: REL_13_STABLE [81596645c] 2022-01-26 09:59:19 +0100
Branch: REL_12_STABLE [aa58f5c53] 2022-01-26 09:59:23 +0100
-->
     <para>
      Fix display of <literal>cert</literal> authentication method's
      options in <structname>pg_hba_file_rules</structname> view (Magnus
      Hagander)
      <ulink url="&commit_baseurl;81596645c">&sect;</ulink>
     </para>

     <para>
      The <literal>cert</literal> authentication method implies
      <literal>clientcert=verify-full</literal>, but the
      <structname>pg_hba_file_rules</structname> view incorrectly reported
      <literal>clientcert=verify-ca</literal>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [43c217512] 2022-01-13 17:49:46 -0500
Branch: REL_14_STABLE [4aee39ddb] 2022-01-13 17:49:26 -0500
Branch: REL_13_STABLE [ca14c4184] 2022-01-13 17:49:26 -0500
Branch: REL_12_STABLE [45a3cefad] 2022-01-13 17:49:26 -0500
Branch: REL_11_STABLE [3a1bfe256] 2022-01-13 17:49:26 -0500
Branch: REL_10_STABLE [3433a1fc7] 2022-01-13 17:49:26 -0500
-->
     <para>
      Fix display of whole-row variables appearing
      in <literal>INSERT ... VALUES</literal> rules (Tom Lane)
      <ulink url="&commit_baseurl;ca14c4184">&sect;</ulink>
     </para>

     <para>
      A whole-row variable would be printed as <quote>var.*</quote>,
      but that allows it to be expanded to individual columns when
      the rule is reloaded, resulting in different semantics.
      Attach an explicit cast to prevent that, as we do elsewhere.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [098c13455] 2021-11-11 15:00:59 +0900
Branch: REL_14_STABLE [b609db715] 2021-11-11 15:01:45 +0900
Branch: REL_13_STABLE [13c8adf90] 2021-11-11 15:01:54 +0900
-->
     <para>
      Fix one-byte buffer overrun when applying Unicode string
      normalization to an empty string (Michael Paquier)
      <ulink url="&commit_baseurl;13c8adf90">&sect;</ulink>
     </para>

     <para>
      The practical impact of this is limited thanks to alignment
      considerations; but in debug builds, a warning was raised.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [f66885bec] 2022-01-04 13:01:05 -0300
Branch: REL_14_STABLE [f185f35a8] 2022-01-04 13:01:05 -0300
Branch: REL_13_STABLE [29f9fb8fe] 2022-01-04 13:01:05 -0300
Branch: REL_12_STABLE [6b681cd05] 2022-01-04 13:01:05 -0300
Branch: REL_11_STABLE [28cd57416] 2022-01-04 13:01:05 -0300
Branch: REL_10_STABLE [026a93727] 2022-01-04 13:01:05 -0300
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [67a8cb5cb] 2022-01-04 13:21:23 -0300
Branch: REL_14_STABLE [f9db153c2] 2022-01-04 13:21:23 -0300
Branch: REL_13_STABLE [33fdd9f85] 2022-01-04 13:21:23 -0300
Branch: REL_12_STABLE [397b43948] 2022-01-04 13:21:23 -0300
Branch: REL_11_STABLE [b63851a45] 2022-01-04 13:21:23 -0300
Branch: REL_10_STABLE [4a8282425] 2022-01-04 13:21:23 -0300
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [2e577c944] 2021-12-22 15:38:00 +0900
Branch: REL_14_STABLE [8a22a40b2] 2021-12-22 15:38:05 +0900
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [ece8c7619] 2021-12-14 10:58:15 +0900
Branch: REL_14_STABLE [4be3e005e] 2021-12-14 10:58:25 +0900
Branch: REL_13_STABLE [3f710fc2b] 2021-12-14 10:58:29 +0900
Branch: REL_12_STABLE [65af1e842] 2021-12-14 10:58:33 +0900
Branch: REL_11_STABLE [8abb6c27e] 2021-12-14 10:58:37 +0900
-->
     <para>
      Fix or remove some incorrect assertions (Simon Riggs, Michael
      Paquier, Alexander Lakhin)
      <ulink url="&commit_baseurl;29f9fb8fe">&sect;</ulink>
      <ulink url="&commit_baseurl;33fdd9f85">&sect;</ulink>
      <ulink url="&commit_baseurl;3f710fc2b">&sect;</ulink>
     </para>

     <para>
      These errors should affect only debug builds, not production.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [1f655fdc3] 2022-01-21 15:36:27 -0500
Branch: REL_14_STABLE [f4ebf0dbe] 2022-01-21 15:36:28 -0500
Branch: REL_13_STABLE [64ebb43df] 2022-01-21 15:36:28 -0500
Branch: REL_12_STABLE [5521d8139] 2022-01-21 15:36:29 -0500
Branch: REL_11_STABLE [37f5dc8b8] 2022-01-21 15:36:29 -0500
Branch: REL_10_STABLE [0c7c94f90] 2022-01-21 15:36:30 -0500
-->
     <para>
      Fix race condition that could lead to failure to localize error
      messages that are reported early in multi-threaded use
      of <application>libpq</application>
      or <application>ecpglib</application> (Tom Lane)
      <ulink url="&commit_baseurl;64ebb43df">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [f3f467b8f] 2022-01-17 12:52:44 -0500
Branch: REL_14_STABLE [050949877] 2022-01-17 12:52:44 -0500
Branch: REL_13_STABLE [f27af7b88] 2022-01-17 12:52:44 -0500
Branch: REL_12_STABLE [38f099ef9] 2022-01-17 12:52:44 -0500
Branch: REL_11_STABLE [8b107467c] 2022-01-17 12:52:44 -0500
Branch: REL_10_STABLE [9d66c43eb] 2022-01-17 12:52:45 -0500
-->
     <para>
      Avoid calling <function>strerror</function>
      from <application>libpq</application>'s <function>PQcancel</function>
      function (Tom Lane)
      <ulink url="&commit_baseurl;f27af7b88">&sect;</ulink>
     </para>

     <para>
      <function>PQcancel</function> is supposed to be safe to call from a
      signal handler, but <function>strerror</function> is not safe.  The
      faulty usage only occurred in the unlikely event of failure to
      send the cancel message to the server, perhaps explaining the lack
      of reports.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d6eb5a0c2] 2021-11-12 14:55:32 -0500
Branch: REL_14_STABLE [99389cb66] 2021-11-12 14:55:32 -0500
Branch: REL_13_STABLE [843925fad] 2021-11-12 14:55:32 -0500
Branch: REL_12_STABLE [523adcc12] 2021-11-12 14:55:32 -0500
Branch: REL_11_STABLE [b062ca508] 2021-11-12 14:55:32 -0500
Branch: REL_10_STABLE [3bc46e4e9] 2021-11-12 14:55:32 -0500
-->
     <para>
      Make <application>psql</application>'s <command>\password</command>
      command default to setting the password
      for <literal>CURRENT_USER</literal>, not the connection's original
      user name (Tom Lane)
      <ulink url="&commit_baseurl;843925fad">&sect;</ulink>
     </para>

     <para>
      This agrees with the documented behavior, and avoids probable
      permissions failure if <command>SET ROLE</command> or <command>SET
      SESSION AUTHORIZATION</command> has been done since the session began.
      To prevent confusion, the role name to be acted on is now
      included in the password prompt.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9007d4ea7] 2022-01-17 21:19:02 -0500
Branch: REL_14_STABLE [3886785b4] 2022-01-17 21:18:49 -0500
Branch: REL_13_STABLE [90e0f9fd8] 2022-01-17 21:18:49 -0500
-->
     <para>
      Fix <application>psql</application> <literal>\d</literal> command's
      query for identifying parent triggers (Justin Pryzby)
      <ulink url="&commit_baseurl;90e0f9fd8">&sect;</ulink>
     </para>

     <para>
      The previous coding failed with <quote>more than one row returned by
      a subquery used as an expression</quote> if a partition had triggers
      and there were unrelated statement-level triggers of the same name
      on some parent partitioned table.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [fe7551744] 2022-01-16 14:59:20 -0500
Branch: REL_14_STABLE [d91d4338e] 2022-01-16 14:59:20 -0500
Branch: REL_13_STABLE [90a847e6d] 2022-01-16 14:59:20 -0500
-->
     <para>
      Fix <application>psql</application>'s tab-completion of label values
      for enum types (Tom Lane)
      <ulink url="&commit_baseurl;90a847e6d">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [2131c049d] 2022-01-17 13:30:04 -0500
Branch: REL_14_STABLE [4e8726566] 2022-01-17 13:30:04 -0500
Branch: REL_13_STABLE [d18ec312f] 2022-01-17 13:30:04 -0500
Branch: REL_12_STABLE [6d1a854c1] 2022-01-17 13:30:04 -0500
Branch: REL_11_STABLE [92e6c1c9b] 2022-01-17 13:30:04 -0500
Branch: REL_10_STABLE [62bfa554b] 2022-01-17 13:30:04 -0500
-->
     <para>
      In <application>psql</application> and some other client programs,
      avoid trying to invoke <function>gettext()</function> from a
      control-C signal handler (Tom Lane)
      <ulink url="&commit_baseurl;d18ec312f">&sect;</ulink>
     </para>

     <para>
      While no reported failures have been traced to this mistake, it seems
      highly unlikely to be a safe thing to do.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [282b6d00a] 2021-11-21 14:13:35 -0500
Branch: REL_14_STABLE [3bd7556bb] 2021-11-21 14:13:35 -0500
Branch: REL_13_STABLE [33edf4a3c] 2021-11-21 14:13:35 -0500
Branch: REL_12_STABLE [93295932d] 2021-11-21 14:13:35 -0500
Branch: REL_11_STABLE [c2242d364] 2021-11-21 14:13:35 -0500
Branch: REL_10_STABLE [3ce5d0884] 2021-11-21 14:13:35 -0500
-->
     <para>
      Allow canceling the initial password prompt
      in <application>pg_receivewal</application>
      and <application>pg_recvlogical</application> (Tom Lane, Nathan
      Bossart)
      <ulink url="&commit_baseurl;33edf4a3c">&sect;</ulink>
     </para>

     <para>
      Previously it was impossible to terminate these programs via control-C
      while they were prompting for a password.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [b55f2b692] 2021-11-22 17:16:29 -0500
Branch: REL_14_STABLE [0fdf67476] 2021-11-22 17:16:29 -0500
Branch: REL_13_STABLE [d4f6a36d8] 2021-11-22 17:16:29 -0500
Branch: REL_12_STABLE [69949ea68] 2021-11-22 17:16:29 -0500
Branch: REL_11_STABLE [54619a25d] 2021-11-22 17:16:29 -0500
Branch: REL_10_STABLE [2b36973d9] 2021-11-22 17:16:29 -0500
-->
     <para>
      Fix <application>pg_dump</application>'s dump ordering for
      user-defined casts (Tom Lane)
      <ulink url="&commit_baseurl;d4f6a36d8">&sect;</ulink>
     </para>

     <para>
      In rare cases, the output script might refer to a user-defined cast
      before it had been created.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [0b126c6a4] 2021-11-22 15:25:48 -0500
Branch: REL_14_STABLE [aedc4600d] 2021-11-22 15:25:48 -0500
Branch: REL_13_STABLE [6fc8b145e] 2021-11-22 15:25:48 -0500
Branch: REL_12_STABLE [1e7f588ad] 2021-11-22 15:25:48 -0500
Branch: master [db3a660c6] 2021-11-22 15:57:31 -0500
Branch: REL_14_STABLE [72842a575] 2021-11-22 15:57:43 -0500
Branch: REL_13_STABLE [b542e4596] 2021-11-22 15:57:52 -0500
Branch: REL_12_STABLE [72582531b] 2021-11-22 15:57:59 -0500
Branch: REL_11_STABLE [22d2b6611] 2021-11-22 15:58:05 -0500
Branch: REL_10_STABLE [b599b8f39] 2021-11-22 15:58:12 -0500
-->
     <para>
      Fix <application>pg_dump</application>'s <option>--inserts</option>
      and  <option>--column-inserts</option> modes to handle tables
      containing both generated columns and dropped columns (Tom Lane)
      <ulink url="&commit_baseurl;6fc8b145e">&sect;</ulink>
      <ulink url="&commit_baseurl;b542e4596">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [248c3a937] 2021-11-17 14:16:34 -0500
Branch: REL_14_STABLE [53c4a580e] 2021-11-17 14:16:34 -0500
Branch: REL_13_STABLE [c8b5221b5] 2021-11-17 14:16:34 -0500
Branch: REL_12_STABLE [8378dad4c] 2021-11-17 14:16:34 -0500
Branch: REL_11_STABLE [a414eb850] 2021-11-17 14:16:34 -0500
Branch: REL_10_STABLE [13799bb93] 2021-11-17 14:16:34 -0500
Branch: master [3cac2c8ca] 2021-11-17 13:08:25 -0500
Branch: REL_14_STABLE [6b413b41b] 2021-11-17 13:08:25 -0500
Branch: REL_13_STABLE [bbda88c33] 2021-11-17 13:08:25 -0500
Branch: REL_12_STABLE [12bf11889] 2021-11-17 13:08:25 -0500
-->
     <para>
      Fix possible mis-reporting of errors
      in <application>pg_dump</application>
      and <application>pg_basebackup</application> (Tom Lane)
      <ulink url="&commit_baseurl;c8b5221b5">&sect;</ulink>
      <ulink url="&commit_baseurl;bbda88c33">&sect;</ulink>
     </para>

     <para>
      The previous code failed to check for errors from some kernel calls,
      and could report the wrong errno values in other cases.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [54b1cb7eb] 2022-01-08 14:54:39 -0500
Branch: REL_14_STABLE [043c1e1a7] 2022-01-08 14:54:39 -0500
Branch: REL_13_STABLE [823d4c7e2] 2022-01-08 14:54:39 -0500
Branch: REL_12_STABLE [3a69d45af] 2022-01-08 14:54:39 -0500
Branch: REL_11_STABLE [38cbdd22d] 2022-01-08 14:54:39 -0500
Branch: REL_10_STABLE [b21986908] 2022-01-08 14:54:39 -0500
-->
     <para>
      Fix results of index-only scans
      on <filename>contrib/btree_gist</filename> indexes
      on <type>char(<replaceable>N</replaceable>)</type> columns (Tom Lane)
      <ulink url="&commit_baseurl;823d4c7e2">&sect;</ulink>
     </para>

     <para>
      Index-only scans returned column values with trailing spaces
      removed, which is not the expected behavior.  That happened because
      that's how the data was stored in the index.  This fix changes the
      code to store <type>char(<replaceable>N</replaceable>)</type> values
      with the expected amount of space padding.
      The behavior of such an index will not change immediately unless
      you <command>REINDEX</command> it; otherwise space-stripped values
      will be gradually replaced over time during updates.  Queries that
      do not use index-only scan plans will be unaffected in any case.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [bd233bdd8] 2022-01-25 18:52:44 -0500
Branch: REL_14_STABLE [803f0b173] 2022-02-01 19:03:41 -0500
Branch: REL_13_STABLE [4d7d196ff] 2022-02-01 19:03:41 -0500
Branch: REL_12_STABLE [aa2215d6b] 2022-02-01 19:03:41 -0500
Branch: REL_11_STABLE [e41176bd6] 2022-02-01 19:03:41 -0500
Branch: REL_10_STABLE [a72c43012] 2022-02-01 19:03:41 -0500
-->
     <para>
      Change <application>configure</application> to use
      Python's <application>sysconfig</application> module, rather than
      the deprecated <application>distutils</application> module, to
      determine how to build PL/Python (Peter Eisentraut, Tom Lane, Andres
      Freund)
      <ulink url="&commit_baseurl;4d7d196ff">&sect;</ulink>
     </para>

     <para>
      With Python 3.10, this
      avoids <application>configure</application>-time warnings
      about <application>distutils</application> being deprecated and
      scheduled for removal in Python 3.12.  Presumably, once 3.12 is
      out, <literal>configure --with-python</literal> would fail
      altogether.  This future-proofing does come at a
      cost: <application>sysconfig</application> did not exist before
      Python 2.7, nor before 3.2 in the Python 3 branch, so it is no
      longer possible to build PL/Python against long-dead Python
      versions.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [c89f40974] 2022-01-30 16:42:14 -0800
Branch: REL_14_STABLE [8484e3812] 2022-01-30 16:42:42 -0800
Branch: REL_13_STABLE [0dc0fe7b6] 2022-01-30 16:42:45 -0800
Branch: REL_12_STABLE [f173738d5] 2022-01-30 16:42:47 -0800
Branch: REL_11_STABLE [ad95a639a] 2022-01-30 16:42:49 -0800
Branch: REL_10_STABLE [2557a03f8] 2022-01-30 16:43:07 -0800
-->
     <para>
      Fix PL/Perl compile failure on Windows with Perl 5.28 and later
      (Victor Wagner)
      <ulink url="&commit_baseurl;0dc0fe7b6">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [99e4d24a9] 2021-11-25 14:19:22 +0100
Branch: REL_14_STABLE [1cc13b83e] 2021-11-25 14:30:12 +0100
Branch: REL_13_STABLE [04875ae92] 2021-11-25 14:30:46 +0100
Branch: REL_12_STABLE [0d335cbd5] 2021-11-25 14:31:01 +0100
Branch: REL_11_STABLE [a83b1bab0] 2021-11-25 14:32:26 +0100
Branch: REL_10_STABLE [4339e10f0] 2021-11-25 14:32:43 +0100
-->
     <para>
      Fix PL/Python compile failure with Python 3.11 and later (Peter
      Eisentraut)
      <ulink url="&commit_baseurl;04875ae92">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [b2265d305] 2021-11-24 13:03:23 +0900
Branch: REL_14_STABLE [0e681fa45] 2021-11-24 13:03:55 +0900
Branch: REL_13_STABLE [baef657d3] 2021-11-24 13:03:59 +0900
Branch: REL_12_STABLE [420d5e40b] 2021-11-24 13:04:03 +0900
Branch: REL_11_STABLE [1061e41ff] 2021-11-24 13:04:07 +0900
Branch: REL_10_STABLE [82881a9b9] 2021-11-24 13:04:12 +0900
-->
     <para>
      Add support for building with Visual Studio 2022 (Hans Buschmann)
      <ulink url="&commit_baseurl;baef657d3">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master [c3879a7b4] 2022-01-07 16:07:45 -0500
Branch: REL_14_STABLE [a7772e874] 2022-01-07 16:14:04 -0500
Branch: REL_13_STABLE [f3ded9c46] 2022-01-07 16:14:16 -0500
Branch: REL_12_STABLE [a4cde9153] 2022-01-07 16:14:23 -0500
Branch: REL_11_STABLE [c7fa0f55d] 2022-01-07 16:14:32 -0500
Branch: REL_10_STABLE [d897361c7] 2022-01-07 16:14:40 -0500
Branch: master [f80900be0] 2022-01-20 10:13:18 -0500
Branch: REL_14_STABLE [156a846d9] 2022-01-20 10:20:40 -0500
Branch: REL_13_STABLE [31680730e] 2022-01-20 10:20:51 -0500
Branch: REL_12_STABLE [22d8c2570] 2022-01-20 10:21:02 -0500
Branch: REL_11_STABLE [0a79feeca] 2022-01-20 10:21:12 -0500
Branch: REL_10_STABLE [a5bd14d93] 2022-01-20 10:21:28 -0500
-->
     <para>
      Allow the <filename>.bat</filename> wrapper scripts in our MSVC
      build system to be called without first changing into their
      directory (Anton Voloshin, Andrew Dunstan)
      <ulink url="&commit_baseurl;f3ded9c46">&sect;</ulink>
      <ulink url="&commit_baseurl;31680730e">&sect;</ulink>
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-5">
  <title>Release 13.5</title>

  <formalpara>
  <title>Release date:</title>
  <para>2021-11-11</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.4.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.5</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, note that installations using physical replication should
    update standby servers before the primary server, as explained in
    the third changelog entry below.
   </para>

   <para>
    Also, several bugs have been found that may have resulted in corrupted
    indexes, as explained in the next several changelog entries.  If any
    of those cases apply to you, it's recommended to reindex
    possibly-affected indexes after updating.
   </para>

   <para>
    Also, if you are upgrading from a version earlier than 13.2,
    see <xref linkend="release-13-2"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [28e241255] 2021-11-08 11:01:43 -0500
Branch: REL_14_STABLE [9d5a76b8d] 2021-11-08 11:01:43 -0500
Branch: REL_13_STABLE [e92ed93e8] 2021-11-08 11:01:43 -0500
Branch: REL_12_STABLE [d1bd26740] 2021-11-08 11:01:43 -0500
Branch: REL_11_STABLE [9394fb828] 2021-11-08 11:01:43 -0500
Branch: REL_10_STABLE [9ae0f1112] 2021-11-08 11:01:43 -0500
Branch: REL9_6_STABLE [046c2c846] 2021-11-08 11:01:43 -0500
-->
     <para>
      Make the server reject extraneous data after an SSL or GSS
      encryption handshake (Tom Lane)
      <ulink url="&commit_baseurl;e92ed93e8">&sect;</ulink>
     </para>

     <para>
      A man-in-the-middle with the ability to inject data into the TCP
      connection could stuff some cleartext data into the start of a
      supposedly encryption-protected database session.
      This could be abused to send faked SQL commands to the server,
      although that would only work if the server did not demand any
      authentication data.  (However, a server relying on SSL certificate
      authentication might well not do so.)
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Jacob Champion for reporting this problem.
      (CVE-2021-23214)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [160c02588] 2021-11-08 11:14:56 -0500
Branch: REL_14_STABLE [30547d791] 2021-11-08 11:14:56 -0500
Branch: REL_13_STABLE [844b31692] 2021-11-08 11:14:56 -0500
Branch: REL_12_STABLE [36bb95ef2] 2021-11-08 11:14:56 -0500
Branch: REL_11_STABLE [a021a1d2a] 2021-11-08 11:14:56 -0500
Branch: REL_10_STABLE [e65d9c8cd] 2021-11-08 11:14:56 -0500
Branch: REL9_6_STABLE [d83cdfdca] 2021-11-08 11:14:57 -0500
-->
     <para>
      Make <application>libpq</application> reject extraneous data after
      an SSL or GSS encryption handshake (Tom Lane)
      <ulink url="&commit_baseurl;844b31692">&sect;</ulink>
     </para>

     <para>
      A man-in-the-middle with the ability to inject data into the TCP
      connection could stuff some cleartext data into the start of a
      supposedly encryption-protected database session.
      This could probably be abused to inject faked responses to the
      client's first few queries, although other details of libpq's
      behavior make that harder than it sounds.  A different line of
      attack is to exfiltrate the client's password, or other sensitive
      data that might be sent early in the session.  That has been shown
      to be possible with a server vulnerable to CVE-2021-23214.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Jacob Champion for reporting this problem.
      (CVE-2021-23222)
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [ff9f111bc] 2021-09-29 11:21:51 -0300
Branch: REL_14_STABLE [64a8687a6] 2021-09-29 11:41:01 -0300
Branch: REL_13_STABLE [1d97d3d08] 2021-09-29 11:21:51 -0300
Branch: REL_12_STABLE [1df0a914d] 2021-09-29 11:21:51 -0300
Branch: REL_11_STABLE [cfedb279a] 2021-09-29 11:21:51 -0300
Branch: REL_10_STABLE [d9fe2cc7d] 2021-09-29 11:21:51 -0300
Branch: REL9_6_STABLE [148c6ee3b] 2021-09-29 11:21:51 -0300
Branch: master [d03bca4d7] 2021-09-30 10:01:03 -0300
Branch: REL_14_STABLE [e3731bac5] 2021-09-30 10:01:03 -0300
Branch: master [d186d233d] 2021-10-01 18:03:11 -0300
Branch: REL_14_STABLE [0ce67bce0] 2021-10-01 18:03:11 -0300
Branch: master [010e52337] 2021-10-13 18:49:27 -0300
Branch: REL_14_STABLE [79c7fe1af] 2021-10-13 18:49:27 -0300
Branch: REL_13_STABLE [2cdf97fd1] 2021-10-13 18:49:27 -0300
Branch: REL_12_STABLE [4b7abbe48] 2021-10-13 18:49:27 -0300
Branch: REL_11_STABLE [6287b8e19] 2021-10-13 18:49:27 -0300
Branch: REL_10_STABLE [41cce2326] 2021-10-13 18:49:27 -0300
Branch: REL9_6_STABLE [5ec87619b] 2021-10-13 18:49:27 -0300
Branch: REL_14_STABLE [494ec0037] 2021-11-01 13:07:23 -0300
Branch: REL_13_STABLE [17227825c] 2021-11-01 13:07:23 -0300
Branch: REL_12_STABLE [da782bc93] 2021-11-01 13:07:23 -0300
Branch: REL_11_STABLE [5ef210047] 2021-11-01 13:07:23 -0300
Branch: REL_10_STABLE [656312c2a] 2021-11-01 13:07:23 -0300
Branch: REL9_6_STABLE [99197701e] 2021-11-01 13:07:23 -0300
-->
     <para>
      Fix physical replication for cases where the primary crashes
      after shipping a WAL segment that ends with a partial WAL record
      (&Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;1d97d3d08">&sect;</ulink>
      <ulink url="&commit_baseurl;2cdf97fd1">&sect;</ulink>
      <ulink url="&commit_baseurl;17227825c">&sect;</ulink>
     </para>

     <para>
      If the primary did not survive long enough to finish writing the
      rest of the incomplete WAL record, then the previous crash-recovery
      logic had it back up and overwrite WAL starting from the beginning
      of the incomplete WAL record.  This is problematic since standby
      servers may already have copies of that WAL segment.  They will then
      see an inconsistent next segment, and will not be able to recover
      without manual intervention.  To fix, do not back up over a WAL
      segment boundary when restarting after a crash.  Instead write a new
      type of WAL record at the start of the next WAL segment, informing
      readers that the incomplete WAL record will never be finished and
      must be disregarded.
     </para>

     <para>
      When applying this update, it's best to update standby servers
      before the primary, so that they will be ready to handle this new
      WAL record type if the primary happens to crash.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [3cd9c3b92] 2021-10-23 18:36:38 -0700
Branch: REL_14_STABLE [a5b9a0000] 2021-10-23 18:36:42 -0700
Branch: REL_13_STABLE [a9d0a5409] 2021-10-23 18:36:42 -0700
Branch: REL_12_STABLE [fe5d44a1d] 2021-10-23 18:36:42 -0700
Branch: REL_11_STABLE [df6158139] 2021-10-23 18:36:43 -0700
Branch: REL_10_STABLE [560124a37] 2021-10-23 18:36:43 -0700
Branch: REL9_6_STABLE [518493243] 2021-10-23 18:36:43 -0700
-->
     <para>
      Fix <command>CREATE INDEX CONCURRENTLY</command> to wait for
      the latest prepared transactions (Andrey Borodin)
      <ulink url="&commit_baseurl;a9d0a5409">&sect;</ulink>
     </para>

     <para>
      Rows inserted by just-prepared transactions might be omitted from
      the new index, causing queries relying on the index to miss such
      rows.  The previous fix for this type of problem failed to account
      for <command>PREPARE TRANSACTION</command> commands that were still
      in progress when <command>CREATE INDEX CONCURRENTLY</command>
      checked for them.  As before, in installations that have enabled
      prepared transactions (<varname>max_prepared_transactions</varname>
      &gt; 0), it's recommended to reindex any concurrently-built indexes
      in case this problem occurred when they were built.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [fdd965d07] 2021-10-23 18:36:38 -0700
Branch: REL_14_STABLE [dde966efb] 2021-10-23 18:36:42 -0700
Branch: REL_13_STABLE [2e33b4359] 2021-10-23 18:36:42 -0700
Branch: REL_12_STABLE [0869e53d3] 2021-10-23 18:36:42 -0700
Branch: REL_11_STABLE [5141e471b] 2021-10-23 18:36:43 -0700
Branch: REL_10_STABLE [db86746fd] 2021-10-23 18:36:43 -0700
Branch: REL9_6_STABLE [e428699cb] 2021-10-23 18:36:43 -0700
-->
     <para>
      Avoid race condition that can cause backends to fail to add entries
      for new rows to an index being built concurrently (Noah Misch,
      Andrey Borodin)
      <ulink url="&commit_baseurl;2e33b4359">&sect;</ulink>
     </para>

     <para>
      While it's apparently rare in the field, this case could potentially
      affect any index built or reindexed with
      the <literal>CONCURRENTLY</literal> option.  It is recommended to
      reindex any such indexes to make sure they are correct.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ce773f230] 2021-09-02 17:24:41 -0400
Branch: REL_14_STABLE Release: REL_14_0 [23c6bc581] 2021-09-02 17:24:42 -0400
Branch: REL_13_STABLE [be2beadaf] 2021-09-02 17:24:42 -0400
Branch: REL_12_STABLE [a3bf13673] 2021-09-02 17:24:42 -0400
Branch: REL_11_STABLE [ad66373ea] 2021-09-02 17:24:42 -0400
Branch: REL_10_STABLE [2bb20e34c] 2021-09-02 17:24:42 -0400
Branch: REL9_6_STABLE [dea212e24] 2021-09-02 17:24:42 -0400
Branch: master [fd549145d] 2021-09-03 10:01:02 -0400
Branch: REL_14_STABLE Release: REL_14_0 [08b96a2b5] 2021-09-03 10:01:02 -0400
Branch: REL_13_STABLE [9089f1543] 2021-09-03 10:01:02 -0400
Branch: REL_12_STABLE [1fab33c0b] 2021-09-03 10:01:02 -0400
Branch: REL_11_STABLE [2836d57e4] 2021-09-03 10:01:02 -0400
Branch: master [b30cc0fd6] 2021-09-04 16:29:08 -0400
Branch: REL_14_STABLE Release: REL_14_0 [718978d9d] 2021-09-04 16:29:08 -0400
Branch: REL_13_STABLE [2c0dd669c] 2021-09-04 16:29:08 -0400
Branch: REL_12_STABLE [fd295d0c6] 2021-09-04 16:29:08 -0400
Branch: REL_11_STABLE [8782a8452] 2021-09-04 16:29:08 -0400
Branch: REL_10_STABLE [70354dd56] 2021-09-04 16:29:08 -0400
Branch: REL9_6_STABLE [a5e8f7b37] 2021-09-04 16:29:08 -0400
-->
     <para>
      Fix <type>float4</type> and <type>float8</type> hash functions to
      produce uniform results for NaNs (Tom Lane)
      <ulink url="&commit_baseurl;be2beadaf">&sect;</ulink>
      <ulink url="&commit_baseurl;9089f1543">&sect;</ulink>
      <ulink url="&commit_baseurl;2c0dd669c">&sect;</ulink>
     </para>

     <para>
      Since <productname>PostgreSQL</productname>'s floating-point types
      deem all NaNs to be equal, it's important for the hash functions to
      produce the same hash code for all bit-patterns that are NaNs
      according to the IEEE 754 standard.  This failed to happen before,
      meaning that hash indexes and hash-based query plans might produce
      incorrect results for non-canonical NaN values.
      (<literal>'-NaN'::float8</literal> is one way to produce such a
      value on most machines.)  It is advisable to reindex hash indexes
      on floating-point columns, if there is any possibility that they
      might contain such values.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [add5cf28d] 2021-11-01 11:38:23 +0900
Branch: REL_14_STABLE [f255de9a4] 2021-11-01 11:40:22 +0900
Branch: REL_13_STABLE [77f7909a4] 2021-11-01 11:40:29 +0900
-->
     <para>
      Fix <command>REINDEX CONCURRENTLY</command> to preserve operator
      class parameters that were attached to the target index
      (Michael Paquier)
      <ulink url="&commit_baseurl;77f7909a4">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [97ddda8a8] 2021-08-27 23:33:23 -0700
Branch: REL_14_STABLE Release: REL_14_0 [5513c09c8] 2021-08-27 23:33:27 -0700
Branch: REL_13_STABLE [b18669f5e] 2021-08-27 23:33:27 -0700
Branch: REL_12_STABLE [a494f1023] 2021-08-27 23:34:03 -0700
Branch: REL_11_STABLE [6ebd2426b] 2021-08-27 23:34:22 -0700
Branch: REL_10_STABLE [f11c1bb17] 2021-08-27 23:42:53 -0700
Branch: REL9_6_STABLE [978998dbd] 2021-08-27 23:44:55 -0700
-->
     <para>
      Prevent data loss during crash recovery of <command>CREATE
      TABLESPACE</command>, when <varname>wal_level</varname>
      = <literal>minimal</literal> (Noah Misch)
      <ulink url="&commit_baseurl;b18669f5e">&sect;</ulink>
     </para>

     <para>
      If the server crashed between <command>CREATE TABLESPACE</command>
      and the next checkpoint, replay would fully remove the contents of
      the new tablespace's directory, relying on subsequent WAL replay
      to restore everything within that directory.  This interacts badly
      with optimizations that skip writing WAL (one example
      is <command>COPY</command> into a just-created table).  Such
      optimizations are applied only when <varname>wal_level</varname>
      is <literal>minimal</literal>, which is not the default in v10 and
      later.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [d6f1e16c8] 2021-10-18 19:08:25 -0300
Branch: REL_14_STABLE [72d064217] 2021-10-18 19:08:25 -0300
Branch: REL_13_STABLE [fe35528a5] 2021-10-18 19:08:25 -0300
Branch: REL_12_STABLE [8b26be8a3] 2021-10-18 19:08:25 -0300
Branch: REL_11_STABLE [b703b7d31] 2021-10-18 19:08:25 -0300
Branch: REL_10_STABLE [d36bdc4e9] 2021-10-18 19:08:25 -0300
-->
     <para>
      Ensure that the relation cache is invalidated for a table being
      attached to or detached from a partitioned table (Amit Langote,
      &Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;fe35528a5">&sect;</ulink>
     </para>

     <para>
      This oversight could allow misbehavior of subsequent inserts/updates
      addressed directly to the partition, but only in currently-existing
      sessions.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [4548c7673] 2021-09-22 08:00:54 +0530
Branch: REL_14_STABLE Release: REL_14_0 [9eff85932] 2021-09-22 08:13:37 +0530
Branch: REL_13_STABLE [f09a81f1c] 2021-09-22 08:24:20 +0530
-->
     <para>
      Ensure that the relation cache is invalidated for all partitions
      of a partitioned table that is being added to or removed from a
      publication (Hou Zhijie, Vignesh C)
      <ulink url="&commit_baseurl;f09a81f1c">&sect;</ulink>
     </para>

     <para>
      This oversight could lead to improper replication behavior until all
      currently-existing sessions have exited.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [8bd534274] 2021-09-08 11:50:37 +0530
Branch: REL_14_STABLE Release: REL_14_0 [8db27fbc1] 2021-09-08 12:08:29 +0530
Branch: REL_13_STABLE [ddfc7299d] 2021-09-08 12:14:59 +0530
Branch: REL_12_STABLE [2eb09f27d] 2021-09-08 12:16:15 +0530
Branch: REL_11_STABLE [96e38fa5e] 2021-09-08 11:20:42 +0530
Branch: REL_10_STABLE [28cde380c] 2021-09-08 11:23:01 +0530
-->
     <para>
      Ensure that the relation cache is invalidated when creating or
      dropping a <literal>FOR ALL TABLES</literal> publication
      (Hou Zhijie, Vignesh C)
      <ulink url="&commit_baseurl;ddfc7299d">&sect;</ulink>
     </para>

     <para>
      This oversight could lead to improper replication behavior until all
      currently-existing sessions have exited.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [5c056b0c2] 2021-08-06 17:32:54 -0400
Branch: REL_14_STABLE Release: REL_14_0 [e5f6493e3] 2021-08-06 17:32:54 -0400
Branch: REL_13_STABLE [dede14399] 2021-09-20 11:48:52 -0400
Branch: REL_12_STABLE [f230614da] 2021-09-20 11:48:52 -0400
Branch: REL_11_STABLE [914e54501] 2021-09-20 11:48:52 -0400
Branch: REL_10_STABLE [923b7efc2] 2021-09-20 11:48:52 -0400
Branch: REL9_6_STABLE [183b3aced] 2021-09-20 11:48:52 -0400
-->
     <para>
      Don't discard a cast to the same type with unspecified type modifier
      (Tom Lane)
      <ulink url="&commit_baseurl;dede14399">&sect;</ulink>
     </para>

     <para>
      For example, if column <literal>f1</literal> is of
      type <literal>numeric(18,3)</literal>, the parser used to simply
      discard a cast like <literal>f1::numeric</literal>, on the grounds
      that it would have no run-time effect.  That's true, but the exposed
      type of the expression should still be considered to be
      plain <literal>numeric</literal>,
      not <literal>numeric(18,3)</literal>.  This is important for
      correctly resolving the type of larger constructs, such
      as recursive <literal>UNION</literal>s.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [3e310d837] 2021-10-19 13:54:45 -0400
Branch: REL_14_STABLE [04dae19f4] 2021-10-19 13:54:45 -0400
Branch: REL_13_STABLE [30e61a8cd] 2021-10-19 13:54:46 -0400
Branch: REL_12_STABLE [ae7b1dd59] 2021-10-19 13:54:46 -0400
Branch: REL_11_STABLE [0d08c279b] 2021-10-19 13:54:46 -0400
-->
     <para>
      Fix updates of element fields in arrays of domain over composite
      (Tom Lane)
      <ulink url="&commit_baseurl;30e61a8cd">&sect;</ulink>
     </para>

     <para>
      A command such as <literal>UPDATE tab SET fld[1].subfld =
      val</literal> failed if the array's elements were domains rather
      than plain composites.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [c6bc655ee] 2021-10-01 18:29:18 -0300
Branch: REL_14_STABLE [20047609d] 2021-10-01 18:29:18 -0300
Branch: REL_13_STABLE [170206e45] 2021-10-01 18:29:18 -0300
-->
     <para>
      Disallow the combination of <literal>FETCH FIRST WITH TIES</literal>
      and <literal>FOR UPDATE SKIP LOCKED</literal> (David Christensen)
      <ulink url="&commit_baseurl;170206e45">&sect;</ulink>
     </para>

     <para>
      <literal>FETCH FIRST WITH TIES</literal> necessarily fetches one
      more row than requested, since it cannot stop until it finds a row
      that is not a tie.  In our current implementation,
      if <literal>FOR UPDATE</literal> is used then that row will also get
      locked even though it is not returned.  That results in undesirable
      behavior if the <literal>SKIP LOCKED</literal> option is specified.
      It's difficult to change this without introducing a different set of
      undesirable behaviors, so for now, forbid the combination.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [db2760a84] 2021-09-03 16:39:03 -0400
Branch: REL_14_STABLE Release: REL_14_0 [2cc018ba8] 2021-09-03 16:39:04 -0400
Branch: REL_13_STABLE [132be6000] 2021-09-03 16:38:55 -0400
Branch: REL_12_STABLE [9046a0536] 2021-09-03 16:38:55 -0400
Branch: REL_11_STABLE [9ebe2852e] 2021-09-03 16:38:55 -0400
Branch: REL_10_STABLE [5d7c6b6c8] 2021-09-03 16:38:55 -0400
-->
     <para>
      Disallow creating an ICU collation if the current database's
      encoding won't support it (Tom Lane)
      <ulink url="&commit_baseurl;132be6000">&sect;</ulink>
     </para>

     <para>
      Previously this was allowed, but then the collation could not be
      referenced because of the way collation lookup works; you could not
      use the collation, nor even drop it.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [fdd885714] 2021-10-19 11:03:52 +0900
Branch: REL_14_STABLE [b1b797ec7] 2021-10-19 11:04:00 +0900
Branch: REL_13_STABLE [85dc4292a] 2021-10-19 11:04:04 +0900
-->
     <para>
      Disallow <literal>ALTER INDEX index ALTER COLUMN col SET
      (options)</literal> (Nathan Bossart, Michael Paquier)
      <ulink url="&commit_baseurl;85dc4292a">&sect;</ulink>
     </para>

     <para>
      While the parser accepted this, it's undocumented and doesn't
      actually work.
     </para>
    </listitem>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [e54a758d2] 2021-10-06 13:16:51 +0100
Branch: REL_14_STABLE [8e26b868d] 2021-10-06 13:19:25 +0100
Branch: REL_13_STABLE [9ab94ccb1] 2021-10-06 13:20:23 +0100
Branch: REL_12_STABLE [676218034] 2021-10-06 13:21:27 +0100
Branch: REL_11_STABLE [b2a0f1673] 2021-10-06 13:22:33 +0100
Branch: REL_10_STABLE [4853baaac] 2021-10-06 13:23:13 +0100
Branch: REL9_6_STABLE [0de8f9bc8] 2021-10-06 13:24:22 +0100
-->
     <para>
      Fix corner-case loss of precision in
      numeric <function>power()</function> (Dean Rasheed)
      <ulink url="&commit_baseurl;9ab94ccb1">&sect;</ulink>
     </para>

     <para>
      The result could be inaccurate when the first argument is very close
      to 1.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [65dc30ced] 2021-08-24 16:37:26 -0400
Branch: REL_14_STABLE Release: REL_14_0 [244dd7992] 2021-08-24 16:37:27 -0400
Branch: REL_13_STABLE [071146184] 2021-08-24 16:37:27 -0400
Branch: REL_12_STABLE [92620e82f] 2021-08-24 16:37:27 -0400
Branch: REL_11_STABLE [3ebd32e70] 2021-08-24 16:37:27 -0400
Branch: REL_10_STABLE [062c4c791] 2021-08-24 16:37:27 -0400
Branch: REL9_6_STABLE [7e75fe390] 2021-08-24 16:37:27 -0400
-->
     <para>
      Avoid regular expression errors with capturing parentheses
      inside <literal>{0}</literal> (Tom Lane)
      <ulink url="&commit_baseurl;071146184">&sect;</ulink>
     </para>

     <para>
      Regular expressions like <literal>(.){0}...\1</literal> drew
      <quote>invalid backreference number</quote>.  Other regexp engines
      such as Perl don't complain, though, and for that matter ours
      doesn't either in some closely related cases.  Worse, it could throw
      an assertion failure instead.  Fix it so that no error is thrown and
      instead the back-reference is silently deemed to never match.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9bbf6f734] 2021-08-23 17:41:07 -0400
Branch: REL_14_STABLE Release: REL_14_0 [779557bd2] 2021-08-23 17:41:07 -0400
Branch: REL_13_STABLE [9a327179c] 2021-08-23 17:41:07 -0400
Branch: REL_12_STABLE [b9521a1f9] 2021-08-23 17:41:07 -0400
Branch: REL_11_STABLE [08e080756] 2021-08-23 17:41:07 -0400
Branch: REL_10_STABLE [df87b7c44] 2021-08-23 17:41:07 -0400
Branch: REL9_6_STABLE [d90e14414] 2021-08-23 17:41:07 -0400
-->
     <para>
      Prevent regular expression back-references from sometimes matching
      when they shouldn't (Tom Lane)
      <ulink url="&commit_baseurl;9a327179c">&sect;</ulink>
     </para>

     <para>
      The regexp engine was careless about clearing match data
      for capturing parentheses after rejecting a partial match.  This
      could allow a later back-reference to match in places where it
      should fail for lack of a defined referent.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [facce1da9] 2021-08-20 14:19:04 -0400
Branch: REL_14_STABLE Release: REL_14_0 [57a2d4a1b] 2021-08-20 14:19:04 -0400
Branch: REL_13_STABLE [b30f7f399] 2021-08-20 14:19:04 -0400
Branch: REL_12_STABLE [adbfde3db] 2021-08-20 14:19:04 -0400
Branch: REL_11_STABLE [9610852ab] 2021-08-20 14:19:04 -0400
Branch: REL_10_STABLE [e0f2acf26] 2021-08-20 14:19:04 -0400
Branch: REL9_6_STABLE [cafebd663] 2021-08-20 14:19:04 -0400
-->
     <para>
      Fix regular expression performance bug with back-references inside
      iteration nodes (Tom Lane)
      <ulink url="&commit_baseurl;b30f7f399">&sect;</ulink>
     </para>

     <para>
      Incorrect back-tracking logic could result in exponential time spent
      looking for a match.  Fortunately the problem is masked in most
      cases by other optimizations.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL_14_STABLE Release: REL_14_0 [599c73a91] 2021-09-06 11:29:52 -0400
Branch: REL_13_STABLE [d8a266c5e] 2021-09-06 11:29:52 -0400
Branch: REL_12_STABLE [eb3c8d248] 2021-09-06 11:29:52 -0400
Branch: REL_11_STABLE [90b4647f6] 2021-09-06 11:29:52 -0400
Branch: REL_10_STABLE [b28c862a6] 2021-09-06 11:29:52 -0400
Branch: REL9_6_STABLE [5907c3818] 2021-09-06 11:29:52 -0400
-->
     <para>
      Fix incorrect results from <literal>AT TIME ZONE</literal> applied
      to a <type>time with time zone</type> value (Tom Lane)
      <ulink url="&commit_baseurl;d8a266c5e">&sect;</ulink>
     </para>

     <para>
      The results were incorrect if the target time zone was specified by
      a dynamic timezone abbreviation (that is, one that is defined as
      equivalent to a full time zone name, rather than a fixed UTC offset).
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [4d5f651f1] 2021-10-14 12:43:55 -0400
Branch: REL_14_STABLE [fd059ac2e] 2021-10-14 12:43:43 -0400
Branch: REL_13_STABLE [fdd6a4d8d] 2021-10-14 12:43:43 -0400
-->
     <para>
      Fix planner error with pulling up subquery expressions into function
      rangetable entries (Tom Lane)
      <ulink url="&commit_baseurl;fdd6a4d8d">&sect;</ulink>
     </para>

     <para>
      If a function in <literal>FROM</literal> laterally references the
      output of some sub-<literal>SELECT</literal> earlier in
      the <literal>FROM</literal> clause, and we are able to flatten that
      sub-<literal>SELECT</literal> into the outer query, the
      expression(s) copied into the function expression were not fully
      processed.  This could lead to crashes at execution.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a21049fd3] 2021-09-17 15:41:16 -0400
Branch: REL_14_STABLE Release: REL_14_0 [4d5b4483d] 2021-09-17 15:41:16 -0400
Branch: REL_13_STABLE [e0b0d1eab] 2021-09-17 15:41:16 -0400
Branch: REL_12_STABLE [febe013ca] 2021-09-17 15:41:16 -0400
-->
     <para>
      Fix mistranslation of PlaceHolderVars to inheritance child relations
      (Tom Lane)
      <ulink url="&commit_baseurl;e0b0d1eab">&sect;</ulink>
     </para>

     <para>
      This error could result in assertion failures, or in mis-planning of
      queries having partitioned or inherited tables on the nullable side
      of an outer join.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [8c1144ba7] 2021-10-01 14:59:35 -0400
Branch: REL_14_STABLE [a54509bfd] 2021-10-01 14:59:35 -0400
Branch: REL_13_STABLE [7adbe186f] 2021-10-01 14:59:35 -0400
Branch: REL_12_STABLE [334fb8c3d] 2021-10-01 14:59:35 -0400
Branch: REL_11_STABLE [5863d348a] 2021-10-01 14:59:35 -0400
Branch: REL_10_STABLE [f951ea3a2] 2021-10-01 14:59:35 -0400
-->
     <para>
      Avoid using MCV-only statistics to estimate the range of a column
      (Tom Lane)
      <ulink url="&commit_baseurl;7adbe186f">&sect;</ulink>
     </para>

     <para>
      There are corner cases in which <command>ANALYZE</command> will
      build a most-common-values (MCV) list but not a histogram, even
      though the MCV list does not account for all the observed values.
      In such cases, keep the planner from using the MCV list alone to
      estimate the range of column values.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [7b5d4c29e] 2021-10-01 11:10:12 -0400
Branch: REL_14_STABLE [e6adaa179] 2021-10-01 11:10:12 -0400
Branch: REL_13_STABLE [04ef2021e] 2021-10-01 11:10:12 -0400
Branch: REL_12_STABLE [cded2c460] 2021-10-01 11:10:12 -0400
Branch: REL_11_STABLE [5abbda985] 2021-10-01 11:10:12 -0400
-->
     <para>
      Fix restoration of a Portal's snapshot inside a subtransaction
      (Bertrand Drouvot)
      <ulink url="&commit_baseurl;04ef2021e">&sect;</ulink>
     </para>

     <para>
      If a procedure commits or rolls back a transaction, and then its
      next significant action is inside a new subtransaction, snapshot
      management went wrong, leading to a dangling pointer and probable
      crash.  A typical example in PL/pgSQL is a <literal>COMMIT</literal>
      immediately followed by a <literal>BEGIN ... EXCEPTION</literal>
      block that performs a query.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [409f9ca44] 2021-10-18 11:55:42 +0900
Branch: REL_14_STABLE [5b353aaff] 2021-10-18 11:56:48 +0900
Branch: REL_13_STABLE [8f4fe8d7f] 2021-10-18 11:56:52 +0900
Branch: REL_12_STABLE [a207b8521] 2021-10-18 11:56:54 +0900
Branch: REL_11_STABLE [506aa1f71] 2021-10-18 11:56:57 +0900
Branch: REL_10_STABLE [d1a6a08df] 2021-10-18 11:57:02 +0900
Branch: REL9_6_STABLE [f49bf8263] 2021-10-18 11:57:07 +0900
-->
     <para>
      Clean up correctly if a transaction fails after exporting its
      snapshot (Dilip Kumar)
      <ulink url="&commit_baseurl;8f4fe8d7f">&sect;</ulink>
     </para>

     <para>
      This oversight would only cause a problem if the same session
      attempted to export a snapshot again.  The most likely scenario for
      that is creation of a replication slot (followed by rollback)
      and then creation of another replication slot.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
Branch: master [05e6e78c1] 2021-11-06 19:13:58 +0300
Branch: REL_14_STABLE [b0f6bd48f] 2021-11-06 19:13:53 +0300
Branch: REL_13_STABLE [e1fee28a0] 2021-11-06 18:34:19 +0300
Branch: REL_12_STABLE [8f779a1a3] 2021-11-06 18:34:21 +0300
Branch: REL_11_STABLE [691c0df73] 2021-11-06 18:34:23 +0300
Branch: REL_10_STABLE [774d00573] 2021-11-06 18:34:26 +0300
Branch: REL9_6_STABLE [7381b79ad] 2021-11-06 18:34:31 +0300
-->
     <para>
      Prevent wraparound of overflowed-subtransaction tracking on standby
      servers (Kyotaro Horiguchi, Alexander Korotkov)
      <ulink url="&commit_baseurl;e1fee28a0">&sect;</ulink>
     </para>

     <para>
      This oversight could cause significant performance degradation
      (manifesting as excessive SubtransSLRU traffic) on standby servers.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [8a4237908] 2021-10-04 14:05:20 +0900
Branch: REL_14_STABLE [828f7f000] 2021-10-04 14:05:48 +0900
Branch: REL_13_STABLE [194e535a0] 2021-10-04 14:05:52 +0900
Branch: REL_12_STABLE [3c3f118d5] 2021-10-04 14:05:55 +0900
Branch: REL_11_STABLE [0a561d4d0] 2021-10-04 14:05:59 +0900
Branch: REL_10_STABLE [8a6a1fe07] 2021-10-04 14:06:03 +0900
Branch: REL9_6_STABLE [e2b2a9e1c] 2021-10-04 14:06:09 +0900
-->
     <para>
      Ensure that prepared transactions are properly accounted for during
      promotion of a standby server (Michael Paquier, Andres Freund)
      <ulink url="&commit_baseurl;194e535a0">&sect;</ulink>
     </para>

     <para>
      There was a narrow window where a prepared transaction could be
      omitted from a snapshot taken by a concurrently-running session.
      If that session then used the snapshot to perform data updates,
      erroneous results or data corruption could occur.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [1316be286] 2021-09-15 12:31:56 -0400
Branch: REL_14_STABLE Release: REL_14_0 [d84d62b62] 2021-09-15 12:31:56 -0400
Branch: REL_13_STABLE [e06cc024b] 2021-09-15 12:31:56 -0400
-->
     <para>
      Disallow <literal>LISTEN</literal> in background workers (Tom Lane)
      <ulink url="&commit_baseurl;e06cc024b">&sect;</ulink>
     </para>

     <para>
      There's no infrastructure to support this, so if someone did
      it, it would only result in preventing cleanup of
      the <literal>NOTIFY</literal> queue.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [2e4eae87d] 2021-09-14 17:18:25 -0400
Branch: REL_14_STABLE Release: REL_14_0 [0eff10a00] 2021-09-14 17:18:25 -0400
Branch: REL_13_STABLE [63f28776c] 2021-09-14 17:18:25 -0400
-->
     <para>
      Send <literal>NOTIFY</literal> signals to other backends during
      transaction commit, not in the server's idle loop (Artur Zakirov,
      Tom Lane)
      <ulink url="&commit_baseurl;63f28776c">&sect;</ulink>
     </para>

     <para>
      This change allows notifications to be delivered immediately after
      an intra-procedure <literal>COMMIT</literal>.  It also allows
      logical replication workers to send notifications.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c1b7a6c27] 2021-09-10 13:18:32 -0400
Branch: REL_14_STABLE Release: REL_14_0 [d844cd75a] 2021-09-10 13:18:32 -0400
Branch: REL_13_STABLE [fa5d0415f] 2021-09-10 13:18:32 -0400
Branch: REL_12_STABLE [ba408fc96] 2021-09-10 13:18:32 -0400
Branch: REL_11_STABLE [9ea8d3d24] 2021-09-10 13:18:32 -0400
-->
     <para>
      Refuse to rewind a cursor marked <literal>NO SCROLL</literal>
      if it has been held over from a previous transaction due
      to the <literal>WITH HOLD</literal> option (Tom Lane)
      <ulink url="&commit_baseurl;fa5d0415f">&sect;</ulink>
     </para>

     <para>
      We have long forbidden fetching backwards from a <literal>NO
      SCROLL</literal> cursor, but for historical reasons the prohibition
      didn't extend to cases in which we rewind the query altogether and
      then re-fetch forwards.  That exception leads to inconsistencies,
      particularly for held-over cursors which may not have stored all the
      data necessary to rewind.  Disallow rewinding for non-scrollable
      held-over cursors to block the worst inconsistencies.  (v15 will
      remove the exception altogether.)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [cba79a163] 2021-09-09 13:36:44 -0400
Branch: REL_14_STABLE Release: REL_14_0 [b7056c0a2] 2021-09-09 13:36:44 -0400
Branch: REL_13_STABLE [d8d93bc8b] 2021-09-09 13:36:31 -0400
Branch: REL_12_STABLE [2e75e969c] 2021-09-09 13:36:31 -0400
Branch: REL_11_STABLE [7813451c2] 2021-09-09 13:36:31 -0400
-->
     <para>
      Fix possible failure while saving a <literal>WITH HOLD</literal>
      cursor at transaction end, if it had already been read to completion
      (Tom Lane)
      <ulink url="&commit_baseurl;d8d93bc8b">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [8481f9989] 2021-09-09 11:45:48 -0400
Branch: REL_14_STABLE Release: REL_14_0 [7430c7742] 2021-09-09 11:45:48 -0400
Branch: REL_13_STABLE [04118de78] 2021-09-09 11:45:48 -0400
Branch: REL_12_STABLE [a7a73ce30] 2021-09-09 11:45:48 -0400
Branch: REL_11_STABLE [1a23b669d] 2021-09-09 11:45:48 -0400
Branch: REL_10_STABLE [ca1dd6234] 2021-09-09 11:45:48 -0400
Branch: REL9_6_STABLE [cc4de2bba] 2021-09-09 11:45:48 -0400
-->
     <para>
      Fix detection of a relation that has grown to the maximum allowed
      length (Tom Lane)
      <ulink url="&commit_baseurl;04118de78">&sect;</ulink>
     </para>

     <para>
      An attempt to extend a table or index past the limit of 2^32-1
      blocks was rejected, but not soon enough to prevent inconsistent
      internal state from being created.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [362e2dcc4] 2021-09-08 12:05:47 -0400
Branch: REL_14_STABLE Release: REL_14_0 [03d01d746] 2021-09-08 12:05:43 -0400
Branch: REL_13_STABLE [cbba6ba3a] 2021-09-08 12:05:43 -0400
Branch: REL_12_STABLE [1fedbcc7a] 2021-09-08 12:05:43 -0400
Branch: REL_11_STABLE [882b7e728] 2021-09-08 12:05:43 -0400
Branch: REL_10_STABLE [9de082399] 2021-09-08 12:05:43 -0400
Branch: REL9_6_STABLE [595ab8a54] 2021-09-08 12:05:43 -0400
-->
     <para>
      Correctly track the presence of data-modifying CTEs when expanding
      a <literal>DO INSTEAD</literal> rule (Greg Nancarrow, Tom Lane)
      <ulink url="&commit_baseurl;cbba6ba3a">&sect;</ulink>
     </para>

     <para>
      The previous failure to do this could lead to problems such as
      unsafely choosing a parallel plan.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [5be8ce82e] 2021-08-31 18:33:38 +0200
Branch: REL_14_STABLE Release: REL_14_0 [a371a5ba3] 2021-08-31 18:36:06 +0200
Branch: REL_13_STABLE [1fe1a04af] 2021-08-31 18:38:11 +0200
Branch: REL_12_STABLE [6c8b98669] 2021-08-31 18:40:09 +0200
Branch: REL_11_STABLE [b46ff4b50] 2021-08-31 18:42:11 +0200
Branch: REL_10_STABLE [bfb732c0e] 2021-08-31 18:44:36 +0200
Branch: master [628bc9d13] 2021-08-31 19:31:10 +0200
Branch: REL_14_STABLE Release: REL_14_0 [4090ff2a9] 2021-08-31 19:32:32 +0200
Branch: REL_13_STABLE [c8213aa94] 2021-08-31 19:36:03 +0200
Branch: REL_12_STABLE [5f8dd5dc1] 2021-08-31 19:41:58 +0200
Branch: REL_11_STABLE [bce24d1ed] 2021-08-31 19:42:14 +0200
Branch: REL_10_STABLE [6963e723f] 2021-08-31 19:44:30 +0200
-->
     <para>
      Fix incorrect reporting of permissions failures on extended
      statistics objects (Tomas Vondra)
      <ulink url="&commit_baseurl;1fe1a04af">&sect;</ulink>
      <ulink url="&commit_baseurl;c8213aa94">&sect;</ulink>
     </para>

     <para>
      The code typically produced <quote>cache lookup error</quote> rather
      than the intended message.
     </para>
    </listitem>

    <listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [a780b2fcc] 2021-08-25 08:32:04 -0400
Branch: REL_14_STABLE Release: REL_14_0 [11c123988] 2021-08-25 08:33:53 -0400
Branch: REL_13_STABLE [bc062cb93] 2021-08-25 08:40:52 -0400
Branch: REL_12_STABLE [f4b77e82e] 2021-08-25 08:45:00 -0400
Branch: REL_11_STABLE [198cf81e2] 2021-08-25 08:48:01 -0400
Branch: REL_10_STABLE [96f6ef9fe] 2021-08-25 08:55:52 -0400
-->
     <para>
      Fix incorrect snapshot handling in parallel workers (Greg Nancarrow)
      <ulink url="&commit_baseurl;bc062cb93">&sect;</ulink>
     </para>

     <para>
      This oversight could lead to misbehavior in parallel queries if the
      transaction isolation level is less than <literal>REPEATABLE
      READ</literal>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [29b590547] 2021-08-25 09:53:07 +0530
Branch: REL_14_STABLE Release: REL_14_0 [9d7a80ce0] 2021-08-25 10:10:50 +0530
Branch: REL_13_STABLE [794025eff] 2021-08-25 09:23:27 +0530
Branch: REL_12_STABLE [e35705f54] 2021-08-25 09:32:56 +0530
Branch: REL_11_STABLE [bfdbda24b] 2021-08-25 09:43:33 +0530
-->
     <para>
      Fix logical decoding to correctly ignore toast-table changes for
      transient tables (Bertrand Drouvot)
      <ulink url="&commit_baseurl;794025eff">&sect;</ulink>
     </para>

     <para>
      Logical decoding normally ignores changes in transient tables such
      as those created during an <command>ALTER TABLE</command> heap
      rewrite.  But that filtering wasn't applied to the associated toast
      table if any, leading to possible errors when rewriting a table
      that's being published.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [df3640e52] 2021-09-13 10:24:00 +0530
Branch: REL_14_STABLE Release: REL_14_0 [f5e0ff463] 2021-09-13 10:35:00 +0530
Branch: REL_13_STABLE [58cf794ca] 2021-09-13 10:46:58 +0530
-->
     <para>
      Fix logical decoding's memory usage accounting to handle TOAST data
      correctly (Bertrand Drouvot)
      <ulink url="&commit_baseurl;58cf794ca">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [596ba75cb] 2021-09-09 23:56:57 +0900
Branch: REL_14_STABLE Release: REL_14_0 [b5ec22bf5] 2021-09-09 23:58:05 +0900
Branch: REL_13_STABLE [dd9b3fced] 2021-09-09 23:58:26 +0900
Branch: REL_12_STABLE [466535254] 2021-09-09 23:58:54 +0900
Branch: REL_11_STABLE [aacb3cfaf] 2021-09-09 23:59:19 +0900
Branch: REL_10_STABLE [f77489046] 2021-09-09 23:59:40 +0900
Branch: REL9_6_STABLE [61e2aa2db] 2021-09-10 00:00:06 +0900
-->
     <para>
      Ensure that walreceiver processes create all required archive
      notification files before exiting (Fujii Masao)
      <ulink url="&commit_baseurl;dd9b3fced">&sect;</ulink>
     </para>

     <para>
      If a walreceiver exited exactly at a WAL segment boundary, it failed
      to make a notification file for the last-received segment, thus
      delaying archiving of that segment on the standby.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [a3fcbcda7] 2021-08-23 11:09:33 +0900
Branch: REL_14_STABLE Release: REL_14_0 [65b649fec] 2021-08-23 11:09:54 +0900
Branch: REL_13_STABLE [29f942325] 2021-08-23 11:09:57 +0900
Branch: master [ec2133a44] 2021-10-06 13:28:23 +0900
Branch: REL_14_STABLE [ae254356f] 2021-10-06 13:28:30 +0900
Branch: REL_13_STABLE [d6d68e223] 2021-10-06 13:28:35 +0900
-->
     <para>
      Fix computation of the WAL range to include in a backup manifest
      when a timeline change is involved (Kyotaro Horiguchi)
      <ulink url="&commit_baseurl;29f942325">&sect;</ulink>
      <ulink url="&commit_baseurl;d6d68e223">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [8d2d6ec77] 2021-08-19 12:12:35 -0400
Branch: REL_14_STABLE Release: REL_14_0 [464900393] 2021-08-19 12:12:35 -0400
Branch: REL_13_STABLE [7fa367d96] 2021-08-19 12:12:35 -0400
Branch: REL_12_STABLE [0c13ee198] 2021-08-19 12:12:35 -0400
Branch: REL_11_STABLE [fbc1eed8a] 2021-08-19 12:12:35 -0400
Branch: REL_10_STABLE [2739a2810] 2021-08-19 12:12:36 -0400
Branch: REL9_6_STABLE [cc7fae5c2] 2021-08-19 12:12:36 -0400
-->
     <para>
      Avoid trying to lock the <literal>OLD</literal>
      and <literal>NEW</literal> pseudo-relations in a rule
      that uses <literal>SELECT FOR UPDATE</literal>
      (Masahiko Sawada, Tom Lane)
      <ulink url="&commit_baseurl;7fa367d96">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [2313dda9d] 2021-08-18 18:12:51 -0400
Branch: REL_14_STABLE Release: REL_14_0 [61f9dae2c] 2021-08-18 18:12:51 -0400
Branch: REL_13_STABLE [ecd4dd9f1] 2021-08-18 18:12:51 -0400
Branch: REL_12_STABLE [eb2f59b34] 2021-08-18 18:12:51 -0400
Branch: REL_11_STABLE [a65319f09] 2021-08-18 18:12:51 -0400
Branch: REL_10_STABLE [82ad7ecb4] 2021-08-18 18:12:51 -0400
Branch: REL9_6_STABLE [c09f56fed] 2021-08-18 18:12:51 -0400
-->
     <para>
      Fix parser's processing of aggregate <literal>FILTER</literal>
      clauses (Tom Lane)
      <ulink url="&commit_baseurl;ecd4dd9f1">&sect;</ulink>
     </para>

     <para>
      If the <literal>FILTER</literal> expression is a plain boolean column,
      the semantic level of the aggregate could be mis-determined, leading
      to not-per-spec behavior.  If the <literal>FILTER</literal>
      expression is itself a boolean-returning aggregate, an error should
      be thrown but was not, likely resulting in a crash at execution.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [c2c618ff1] 2021-10-19 19:08:45 -0300
Branch: REL_14_STABLE [3ce3fb2f7] 2021-10-19 19:08:45 -0300
Branch: REL_13_STABLE [842fe6123] 2021-10-19 19:08:45 -0300
Branch: REL_12_STABLE [6c8d1c197] 2021-10-19 19:08:45 -0300
Branch: master [cd124d205] 2021-10-20 13:05:42 -0300
Branch: REL_14_STABLE [718278855] 2021-10-20 13:05:42 -0300
Branch: REL_13_STABLE [a73a3671d] 2021-10-20 13:05:42 -0300
Branch: REL_12_STABLE [3c8c49945] 2021-10-20 13:05:42 -0300
-->
     <para>
      Ensure that the correct lock level is used when renaming a table
      (Nathan Bossart, &Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;842fe6123">&sect;</ulink>
      <ulink url="&commit_baseurl;a73a3671d">&sect;</ulink>
     </para>

     <para>
      For historical reasons, <command>ALTER INDEX ... RENAME</command>
      can be applied to any sort of relation.  The lock level required to
      rename an index is lower than that required to rename a table or
      other kind of relation, but the code got this wrong and would use
      the weaker lock level whenever the command is spelled <command>ALTER
      INDEX</command>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [6b71c925c] 2021-08-17 14:29:22 -0400
Branch: REL_14_STABLE Release: REL_14_0 [8f51ee63d] 2021-08-17 14:29:22 -0400
Branch: REL_13_STABLE [7b01246e1] 2021-08-17 14:29:22 -0400
-->
     <para>
      Prevent <literal>ALTER TYPE/DOMAIN/OPERATOR ... SET</literal>
      from changing extension membership (Tom Lane)
      <ulink url="&commit_baseurl;7b01246e1">&sect;</ulink>
     </para>

     <para>
      <literal>ALTER ... SET</literal> executed by an extension script
      would cause the target object to become a member of the extension if
      it was not already.  In itself this isn't too troubling, since
      there's little reason for an extension script to touch an object not
      belonging to the extension.  But <literal>ALTER TYPE SET</literal>
      will recurse to dependent domains, thus causing them to also become
      extension members.  This causes unwanted side-effects from
      extension upgrade scripts that use that command to adjust the
      properties of a base type belonging to the extension.  Fix by
      redefining these <literal>ALTER</literal> cases to never change
      extension membership.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [edb4d95dd] 2021-09-13 18:26:15 -0700
Branch: REL_14_STABLE Release: REL_14_0 [4e86887e0] 2021-09-13 18:15:28 -0700
Branch: REL_13_STABLE [c49e6f9d9] 2021-09-13 18:26:18 -0700
Branch: REL_12_STABLE [43849b65f] 2021-09-13 18:26:18 -0700
Branch: REL_11_STABLE [dccffd9a2] 2021-09-13 18:26:18 -0700
-->
     <para>
      Avoid trying to clean up LLVM state after an error within LLVM
      (Andres Freund, Justin Pryzby)
      <ulink url="&commit_baseurl;c49e6f9d9">&sect;</ulink>
     </para>

     <para>
      This prevents a likely crash during backend exit after a fatal LLVM
      error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [d74b54b3d] 2021-11-05 12:29:35 -0300
Branch: REL_14_STABLE [02e20bb2d] 2021-11-05 12:29:35 -0300
Branch: REL_13_STABLE [bf5cdcfd5] 2021-11-05 12:29:34 -0300
Branch: REL_12_STABLE [3eff168a2] 2021-11-05 12:29:34 -0300
Branch: REL_11_STABLE [92224e470] 2021-11-05 12:29:34 -0300
Branch: REL_10_STABLE [58b600f64] 2021-11-05 12:29:34 -0300
Branch: REL9_6_STABLE [e0eaeafd6] 2021-11-05 12:29:35 -0300
-->
     <para>
      Avoid null-pointer-dereference crash when dropping a role that owns
      objects being dropped concurrently (&Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;bf5cdcfd5">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [6b1b405eb] 2021-11-03 10:52:38 +0200
Branch: REL_14_STABLE [4ebd740cd] 2021-11-03 10:54:33 +0200
Branch: REL_13_STABLE [07070c008] 2021-11-03 10:54:36 +0200
Branch: REL_12_STABLE [11a399f9c] 2021-11-03 10:54:39 +0200
Branch: REL_11_STABLE [6bf00da11] 2021-11-03 10:54:42 +0200
Branch: REL_10_STABLE [7b55bb892] 2021-11-03 11:09:08 +0200
Branch: REL9_6_STABLE [8f32afee0] 2021-11-03 11:15:02 +0200
Branch: master [d5ab0681b] 2021-11-03 19:38:17 +0200
Branch: REL_14_STABLE [f4e3b6271] 2021-11-03 19:41:35 +0200
Branch: REL_13_STABLE [b7299b664] 2021-11-03 19:41:38 +0200
Branch: REL_12_STABLE [7dc9a310e] 2021-11-03 19:41:41 +0200
Branch: REL_11_STABLE [b110af5f7] 2021-11-03 19:41:44 +0200
Branch: REL_10_STABLE [245799d39] 2021-11-03 19:41:46 +0200
Branch: REL9_6_STABLE [71aeaf245] 2021-11-03 19:41:49 +0200
-->
     <para>
      Prevent <quote>snapshot reference leak</quote> warning
      when <function>lo_export()</function> or a related function fails
      (Heikki Linnakangas)
      <ulink url="&commit_baseurl;07070c008">&sect;</ulink>
      <ulink url="&commit_baseurl;b7299b664">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [3778bcb39] 2021-08-27 19:53:05 -0400
Branch: REL_14_STABLE Release: REL_14_0 [e84d4810c] 2021-08-27 19:53:06 -0400
Branch: REL_13_STABLE [dbb239d51] 2021-08-27 19:42:42 -0400
Branch: REL_12_STABLE [187b5fea9] 2021-08-27 19:42:42 -0400
Branch: REL_11_STABLE [7c1b0f4c3] 2021-08-27 19:42:42 -0400
Branch: REL_10_STABLE [6a787c83c] 2021-08-27 19:42:42 -0400
Branch: REL9_6_STABLE [9e959f7ed] 2021-08-27 19:42:42 -0400
-->
     <para>
      Ensure that scans of SP-GiST indexes are counted in the statistics
      views (Tom Lane)
      <ulink url="&commit_baseurl;dbb239d51">&sect;</ulink>
     </para>

     <para>
      Incrementing the number-of-index-scans counter was overlooked in the
      SP-GiST code, although per-tuple counters were advanced correctly.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [01fc65270] 2021-11-02 13:36:47 -0400
Branch: REL_14_STABLE [16a56774f] 2021-11-02 13:36:53 -0400
Branch: REL_13_STABLE [ada667b45] 2021-11-02 13:36:57 -0400
-->
     <para>
      Fix inefficient code generation for CoerceToDomain expression nodes
      (Ranier Vilela)
      <ulink url="&commit_baseurl;ada667b45">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [e4ba1005c] 2021-08-16 12:10:22 +0900
Branch: REL_14_STABLE Release: REL_14_0 [f83d80ea1] 2021-08-16 12:11:49 +0900
Branch: REL_13_STABLE [7f0873f32] 2021-08-16 12:11:53 +0900
Branch: REL_12_STABLE [84c1bac57] 2021-08-16 12:11:56 +0900
Branch: REL_11_STABLE [d392e86fa] 2021-08-16 12:11:59 +0900
Branch: REL_10_STABLE [024fd44e0] 2021-08-16 12:12:02 +0900
Branch: REL9_6_STABLE [942416f4b] 2021-08-16 12:12:09 +0900
-->
     <para>
      Recalculate relevant wait intervals
      if <varname>recovery_min_apply_delay</varname> is changed during
      recovery (Soumyadeep Chakraborty, Ashwin Agrawal)
      <ulink url="&commit_baseurl;7f0873f32">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [37450f2ca] 2021-08-13 16:41:26 +1200
Branch: REL_14_STABLE Release: REL_14_0 [dc23c77d0] 2021-08-13 16:41:56 +1200
Branch: REL_13_STABLE [4873da79d] 2021-08-13 16:42:35 +1200
Branch: REL_12_STABLE [75d8fe818] 2021-08-13 16:43:13 +1200
Branch: REL_11_STABLE [5a6b0f21e] 2021-08-13 16:43:46 +1200
Branch: REL_10_STABLE [4874886b4] 2021-08-13 16:44:18 +1200
-->
     <para>
      Fix infinite loop if a <filename>simplehash.h</filename> hash table
      reaches 2^32 elements (Yura Sokolov)
      <ulink url="&commit_baseurl;4873da79d">&sect;</ulink>
     </para>

     <para>
      It seems unlikely that this bug has been hit in practice, as it
      would require <varname>work_mem</varname> settings of hundreds of
      gigabytes for existing uses of <filename>simplehash.h</filename>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [6301c3ada] 2021-10-31 15:31:29 -0400
Branch: REL_14_STABLE [8424dfced] 2021-10-31 15:31:38 -0400
Branch: REL_13_STABLE [df238aed1] 2021-10-31 15:31:44 -0400
Branch: master [e9d9ba2a4] 2021-11-01 16:24:39 -0400
Branch: REL_14_STABLE [ad87bf355] 2021-11-01 16:24:40 -0400
Branch: REL_13_STABLE [e477642a1] 2021-11-01 16:24:40 -0400
Branch: master [65c6cab13] 2021-11-02 11:31:54 -0400
Branch: REL_14_STABLE [08cfa5981] 2021-11-02 11:31:54 -0400
Branch: REL_13_STABLE [0151af40c] 2021-11-02 11:31:54 -0400
-->
     <para>
      Avoid O(N^2) behavior in some list-manipulation operations
      (Nathan Bossart, Tom Lane)
      <ulink url="&commit_baseurl;df238aed1">&sect;</ulink>
      <ulink url="&commit_baseurl;e477642a1">&sect;</ulink>
      <ulink url="&commit_baseurl;0151af40c">&sect;</ulink>
     </para>

     <para>
      These changes fix slow processing in several scenarios, including:
      when a standby replays a transaction that held many exclusive locks
      on the primary; when many files are due to be unlinked after a
      checkpoint; when hash aggregation involves many batches; and when
      <filename>pg_trgm</filename> extracts indexable conditions from a
      complex regular expression.  Only the first of these scenarios has
      actually been reported from the field, but they all seem like
      plausible consequences of inefficient list deletions.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [83772cc78] 2021-09-23 18:05:10 +0200
Branch: REL_14_STABLE Release: REL_14_0 [bb7628e55] 2021-09-23 18:22:29 +0200
Branch: REL_13_STABLE [b564eb018] 2021-09-23 18:33:59 +0200
Branch: REL_12_STABLE [16d394c05] 2021-09-23 18:41:55 +0200
Branch: REL_11_STABLE [ac7290a20] 2021-09-23 18:48:03 +0200
Branch: REL_10_STABLE [3aac99068] 2021-09-23 18:54:30 +0200
Branch: master [ad8a166ca] 2021-09-23 18:13:36 +0200
Branch: REL_14_STABLE Release: REL_14_0 [abb2f9144] 2021-09-23 18:25:37 +0200
Branch: REL_13_STABLE [c0386f403] 2021-09-23 18:34:01 +0200
Branch: REL_12_STABLE [4185632e9] 2021-09-23 18:43:05 +0200
Branch: REL_11_STABLE [4487a7def] 2021-09-23 18:48:58 +0200
Branch: REL_10_STABLE [d77e085af] 2021-09-23 18:55:22 +0200
-->
     <para>
      Reduce memory consumption during calculation of extended statistics
      (Justin Pryzby, Tomas Vondra)
      <ulink url="&commit_baseurl;b564eb018">&sect;</ulink>
      <ulink url="&commit_baseurl;c0386f403">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Geoghegan <pg@bowt.ie>
Branch: master [a5213adf3] 2021-10-27 12:10:47 -0700
Branch: REL_14_STABLE [d078fe83d] 2021-10-27 12:10:45 -0700
Branch: REL_13_STABLE [f8cce4a3d] 2021-10-27 12:10:43 -0700
Branch: master [c2381b510] 2021-10-27 13:09:24 -0700
Branch: REL_14_STABLE [6cac34339] 2021-10-27 13:09:01 -0700
Branch: REL_13_STABLE [d5a2ffbce] 2021-10-27 13:09:00 -0700
-->
     <para>
      Add more defensive checks around B-tree posting list splits
      (Peter Geoghegan)
      <ulink url="&commit_baseurl;f8cce4a3d">&sect;</ulink>
      <ulink url="&commit_baseurl;d5a2ffbce">&sect;</ulink>
     </para>

     <para>
      This change should help detect index corruption involving duplicate
      table TIDs.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [8781b0ce2] 2021-10-26 12:54:55 +1300
Branch: REL_14_STABLE [181361a0c] 2021-10-26 13:09:00 +1300
Branch: REL_13_STABLE [24b7cf8a5] 2021-10-26 13:04:40 +1300
Branch: REL_12_STABLE [8fef901e3] 2021-10-26 13:01:52 +1300
-->
     <para>
      Disallow setting <varname>huge_pages</varname>
      to <literal>on</literal> when <varname>shared_memory_type</varname>
      is <literal>sysv</literal> (Thomas Munro)
      <ulink url="&commit_baseurl;24b7cf8a5">&sect;</ulink>
     </para>

     <para>
      Previously, this setting was accepted, but it did nothing for lack
      of any implementation.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [8670b9b99] 2021-09-06 11:27:59 -0700
Branch: REL_14_STABLE Release: REL_14_0 [47d54b6ba] 2021-09-06 11:28:02 -0700
Branch: REL_13_STABLE [aae398a87] 2021-09-06 11:28:02 -0700
-->
     <para>
      Fix missing <application>libpq</application> functions on AIX
      (Tony Reix)
      <ulink url="&commit_baseurl;aae398a87">&sect;</ulink>
     </para>

     <para>
      Code reorganization led to the following documented functions not
      being exported from <application>libpq</application> on AIX:
      <function>pg_encoding_to_char()</function>,
      <function>pg_utf_mblen()</function>,
      <function>pg_char_to_encoding()</function>,
      <function>pg_valid_server_encoding()</function>, and
      <function>pg_valid_server_encoding_id()</function>.
      Restore them to visibility.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [fa703b317] 2021-09-13 13:23:50 +0900
Branch: REL_14_STABLE Release: REL_14_0 [cc057fb31] 2021-09-13 13:24:04 +0900
Branch: REL_13_STABLE [b589d212f] 2021-09-13 13:24:20 +0900
Branch: REL_12_STABLE [b34dcf87f] 2021-09-13 13:24:27 +0900
Branch: REL_11_STABLE [b6a10ff4a] 2021-09-13 13:24:35 +0900
Branch: REL_10_STABLE [83a3737a6] 2021-09-13 13:24:47 +0900
Branch: REL9_6_STABLE [3768c468d] 2021-09-13 13:24:56 +0900
-->
     <para>
      Fix <application>ecpg</application> to recover correctly
      after <function>malloc()</function> failure while establishing a
      connection (Michael Paquier)
      <ulink url="&commit_baseurl;b589d212f">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [4476bcb87] 2021-09-21 19:06:53 -0400
Branch: REL_14_STABLE Release: REL_14_0 [2ad5f963e] 2021-09-21 19:06:54 -0400
Branch: REL_13_STABLE [5f0a073cb] 2021-09-21 19:06:33 -0400
Branch: REL_12_STABLE [e8b0bcae6] 2021-09-21 19:06:33 -0400
Branch: REL_11_STABLE [13921c511] 2021-09-21 19:06:33 -0400
-->
     <para>
      Fix misevaluation of stable functions called in the arguments of a
      PL/pgSQL <command>CALL</command> statement (Tom Lane)
      <ulink url="&commit_baseurl;5f0a073cb">&sect;</ulink>
     </para>

     <para>
      They were being called with an out-of-date snapshot, so that they
      would not see any database changes made since the start of the
      session's top-level command.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [1bf2518dd] 2021-09-13 12:42:03 -0400
Branch: REL_14_STABLE Release: REL_14_0 [4ffd3fe4d] 2021-09-13 12:42:28 -0400
Branch: REL_13_STABLE [745abdd95] 2021-09-13 12:42:03 -0400
Branch: REL_12_STABLE [b1de90699] 2021-09-13 12:42:03 -0400
Branch: REL_11_STABLE [bdd6ce48d] 2021-09-13 12:42:03 -0400
Branch: REL_10_STABLE [fe70ec907] 2021-09-13 12:42:04 -0400
Branch: REL9_6_STABLE [a460f7eb3] 2021-09-13 12:42:04 -0400
-->
     <para>
      Allow <literal>EXIT</literal> out of the outermost block in a
      PL/pgSQL routine (Tom Lane)
      <ulink url="&commit_baseurl;745abdd95">&sect;</ulink>
     </para>

     <para>
      If the routine does not require an explicit <literal>RETURN</literal>,
      this usage should be valid, but it was rejected.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [87ad49147] 2021-09-03 21:04:44 -0400
Branch: REL_14_STABLE Release: REL_14_0 [69d670e68] 2021-09-03 21:04:44 -0400
Branch: REL_13_STABLE [742b30cae] 2021-09-03 21:04:44 -0400
Branch: REL_12_STABLE [3b302eb1e] 2021-09-03 21:04:44 -0400
Branch: REL_11_STABLE [beb404d3b] 2021-09-03 21:04:44 -0400
Branch: REL_10_STABLE [6e2f45817] 2021-09-03 21:04:45 -0400
Branch: REL9_6_STABLE [9a070c658] 2021-09-03 21:04:45 -0400
-->
     <para>
      Remove <application>pg_ctl</application>'s hard-coded limits on the
      total length of generated commands (Phil Krylov)
      <ulink url="&commit_baseurl;742b30cae">&sect;</ulink>
     </para>

     <para>
      For example, this removes a restriction on how many command-line
      options can be passed through to the postmaster.  Individual path
      names that <application>pg_ctl</application> deals with, such as the
      postmaster executable's name or the data directory name, are still
      limited to <literal>MAXPGPATH</literal> bytes in most cases.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [2acc84c6f] 2021-10-22 15:22:25 -0400
Branch: REL_14_STABLE [3ad2c2455] 2021-10-22 15:22:25 -0400
Branch: REL_13_STABLE [476006023] 2021-10-22 15:22:26 -0400
Branch: REL_12_STABLE [52b927a73] 2021-10-22 15:22:26 -0400
Branch: REL_11_STABLE [871dfe4b7] 2021-10-22 15:22:26 -0400
Branch: REL_10_STABLE [10f9faf6d] 2021-10-22 15:22:26 -0400
Branch: REL9_6_STABLE [b1df061f7] 2021-10-22 15:22:26 -0400
-->
     <para>
      Fix <application>pg_dump</application> to dump non-global default
      privileges correctly (Neil Chen, Masahiko Sawada)
      <ulink url="&commit_baseurl;476006023">&sect;</ulink>
     </para>

     <para>
      If a global (unrestricted) <command>ALTER DEFAULT
      PRIVILEGES</command> command revoked some present-by-default
      privilege, for example <literal>EXECUTE</literal> for functions, and
      then a restricted <command>ALTER DEFAULT PRIVILEGES</command>
      command granted that privilege again for a selected role or
      schema, <application>pg_dump</application> failed to dump the
      restricted privilege grant correctly.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [e2ff7d9a8] 2021-10-16 12:23:57 -0400
Branch: REL_14_STABLE [b5152e3ba] 2021-10-16 12:24:11 -0400
Branch: REL_13_STABLE [6a262ba8c] 2021-10-16 12:24:17 -0400
Branch: REL_12_STABLE [fd182a92a] 2021-10-16 12:24:24 -0400
Branch: REL_11_STABLE [ca7a4ce58] 2021-10-16 12:24:33 -0400
Branch: REL_10_STABLE [2e2a23283] 2021-10-16 12:24:40 -0400
-->
     <para>
      Make <application>pg_dump</application> acquire shared lock on
      partitioned tables that are to be dumped (Tom Lane)
      <ulink url="&commit_baseurl;6a262ba8c">&sect;</ulink>
     </para>

     <para>
      This oversight was usually pretty harmless, since
      once <application>pg_dump</application> has locked any of the leaf
      partitions, that would suffice to prevent significant DDL on the
      partitioned table itself.  However problems could ensue when dumping
      a childless partitioned table, since no relevant lock would be held.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [bd3611db5] 2021-08-31 15:04:05 -0400
Branch: REL_14_STABLE Release: REL_14_0 [a20a9f26c] 2021-08-31 15:04:05 -0400
Branch: REL_13_STABLE [db11b4a3d] 2021-08-31 15:04:05 -0400
Branch: REL_12_STABLE [6b9667392] 2021-08-31 15:04:05 -0400
Branch: REL_11_STABLE [a60860ff3] 2021-08-31 15:04:05 -0400
Branch: REL_10_STABLE [ba8f1a0be] 2021-08-31 15:04:05 -0400
Branch: REL9_6_STABLE [dd3105286] 2021-08-31 15:04:05 -0400
Branch: master [6c450a861] 2021-08-31 13:53:49 -0400
Branch: REL_14_STABLE Release: REL_14_0 [9407dbbcb] 2021-08-31 13:53:49 -0400
Branch: REL_13_STABLE [904ce45bf] 2021-08-31 13:53:50 -0400
Branch: REL_12_STABLE [2f1ed9d98] 2021-08-31 13:53:50 -0400
Branch: REL_11_STABLE [c4b298ee1] 2021-08-31 13:53:51 -0400
Branch: REL_10_STABLE [0e7bdc722] 2021-08-31 13:53:51 -0400
Branch: REL9_6_STABLE [4645997c8] 2021-08-31 13:53:33 -0400
-->
     <para>
      Improve <application>pg_dump</application>'s performance by avoiding
      making per-table queries for RLS policies, and by avoiding repetitive
      calls to <function>format_type()</function> (Tom Lane)
      <ulink url="&commit_baseurl;db11b4a3d">&sect;</ulink>
      <ulink url="&commit_baseurl;904ce45bf">&sect;</ulink>
     </para>

     <para>
      These changes provide only marginal improvement when dumping from a
      local server, but a dump from a remote server can benefit
      substantially due to fewer network round-trips.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [40dfac4fc] 2021-10-16 15:02:55 -0400
Branch: REL_14_STABLE [3e4c8db93] 2021-10-16 15:03:05 -0400
Branch: REL_13_STABLE [0b5f557b7] 2021-10-16 15:03:10 -0400
Branch: REL_12_STABLE [5b0b2983a] 2021-10-16 15:03:15 -0400
Branch: REL_11_STABLE [58955c84f] 2021-10-16 15:03:21 -0400
-->
     <para>
      Fix crash in <application>pg_dump</application> when attempting to
      dump trigger definitions from a pre-8.3 server (Tom Lane)
      <ulink url="&commit_baseurl;0b5f557b7">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Daniel Gustafsson <dgustafsson@postgresql.org>
Branch: master [998d060f3] 2021-10-19 12:59:54 +0200
Branch: REL_14_STABLE [3e2f32b01] 2021-10-19 12:59:54 +0200
Branch: REL_13_STABLE [687fe8a9d] 2021-10-19 12:59:54 +0200
Branch: REL_12_STABLE [e788883de] 2021-10-19 12:59:54 +0200
Branch: REL_11_STABLE [038892c81] 2021-10-19 12:59:54 +0200
Branch: REL_10_STABLE [4fda03b67] 2021-10-19 12:59:54 +0200
Branch: REL9_6_STABLE [ef1f15819] 2021-10-19 12:59:54 +0200
-->
     <para>
      Fix incorrect filename in <application>pg_restore</application>'s
      error message about an invalid large object TOC file (Daniel
      Gustafsson)
      <ulink url="&commit_baseurl;687fe8a9d">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [d33674708] 2021-09-29 21:46:56 +0900
Branch: REL_14_STABLE [8021334d3] 2021-09-29 21:47:25 +0900
Branch: REL_13_STABLE [3cc85d7d5] 2021-09-29 21:47:31 +0900
Branch: master [2acb7cc6b] 2021-09-29 21:48:52 +0900
Branch: REL_14_STABLE [8231c500e] 2021-09-29 21:49:29 +0900
Branch: REL_13_STABLE [8cf4f7118] 2021-09-29 21:49:36 +0900
Branch: REL_12_STABLE [c5f7e702d] 2021-09-29 21:49:40 +0900
-->
     <para>
      Ensure that <application>pgbench</application> exits with non-zero
      status after a socket-level failure (Yugo Nagata, Fabien Coelho)
      <ulink url="&commit_baseurl;3cc85d7d5">&sect;</ulink>
      <ulink url="&commit_baseurl;8cf4f7118">&sect;</ulink>
     </para>

     <para>
      The desired behavior is to finish out the run but then exit with
      status 2.  Also, fix the reporting of such errors.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a6bd28beb] 2021-08-10 18:10:29 -0400
Branch: REL_14_STABLE Release: REL_14_0 [a4957b5a7] 2021-08-10 18:10:30 -0400
Branch: REL_13_STABLE [7ba487cf9] 2021-08-10 18:10:30 -0400
Branch: REL_12_STABLE [cd7d9b6b6] 2021-08-10 18:10:30 -0400
Branch: REL_11_STABLE [eefa4c2b5] 2021-08-10 18:10:30 -0400
Branch: REL_10_STABLE [843d2879a] 2021-08-10 18:10:30 -0400
Branch: REL9_6_STABLE [5a9df5d50] 2021-08-10 18:10:30 -0400
-->
     <para>
      Fix failure of <filename>contrib/btree_gin</filename> indexes
      on <type>"char"</type>
      (not <type>char(<replaceable>n</replaceable>)</type>) columns,
      when an indexscan using the <literal>&lt;</literal>
      or <literal>&lt;=</literal> operator is performed (Tom Lane)
      <ulink url="&commit_baseurl;7ba487cf9">&sect;</ulink>
     </para>

     <para>
      Such an indexscan failed to return all the entries it should.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a667b0668] 2021-10-31 19:13:48 -0400
Branch: REL_14_STABLE [7104e0b24] 2021-10-31 19:13:48 -0400
Branch: REL_13_STABLE [3a5b313ce] 2021-10-31 19:13:48 -0400
Branch: REL_12_STABLE [16d0da5c8] 2021-10-31 19:13:48 -0400
Branch: REL_11_STABLE [5dd067430] 2021-10-31 19:13:48 -0400
Branch: REL_10_STABLE [d87d5f8d8] 2021-10-31 19:13:48 -0400
Branch: REL9_6_STABLE [fdb60ca83] 2021-10-31 19:13:48 -0400
-->
     <para>
      Change <filename>contrib/pg_stat_statements</filename> to read
      its <quote>query texts</quote> file in units of at most 1GB
      (Tom Lane)
      <ulink url="&commit_baseurl;3a5b313ce">&sect;</ulink>
     </para>

     <para>
      Such large query text files are very unusual, but if they do occur,
      the previous coding would fail on Windows 64 (which rejects
      individual read requests of more than 2GB).
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [3071bbfe4] 2021-10-06 15:50:24 -0400
Branch: REL_14_STABLE [12ff678e1] 2021-10-06 15:50:24 -0400
Branch: REL_13_STABLE [aee83f39a] 2021-10-06 15:50:24 -0400
Branch: REL_12_STABLE [228897374] 2021-10-06 15:50:24 -0400
Branch: REL_11_STABLE [88807757d] 2021-10-06 15:50:24 -0400
Branch: REL_10_STABLE [2e33fbda1] 2021-10-06 15:50:24 -0400
Branch: REL9_6_STABLE [36c9f7d96] 2021-10-06 15:50:24 -0400
-->
     <para>
      Fix null-pointer crash
      when <filename>contrib/postgres_fdw</filename> tries to report a
      data conversion error (Tom Lane)
      <ulink url="&commit_baseurl;aee83f39a">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c32fcac56] 2021-08-13 13:59:43 -0400
Branch: REL_14_STABLE Release: REL_14_0 [4ffbd55d9] 2021-08-13 13:59:44 -0400
Branch: REL_13_STABLE [48695decc] 2021-08-13 13:59:06 -0400
Branch: REL_12_STABLE [cdda2b247] 2021-08-13 13:59:13 -0400
Branch: REL_11_STABLE [8024ff478] 2021-08-13 13:59:18 -0400
Branch: REL_10_STABLE [7915a9515] 2021-08-13 13:59:25 -0400
Branch: REL9_6_STABLE [582a2affa] 2021-08-13 13:59:33 -0400
-->
     <para>
      Add spinlock support for the RISC-V architecture (Marek Szuba)
      <ulink url="&commit_baseurl;48695decc">&sect;</ulink>
     </para>

     <para>
      This is essential for reasonable performance on that platform.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master Release: REL_14_BR [22e1943f1] 2021-03-23 11:48:37 +0100
Branch: REL_13_STABLE [a69e1506f] 2021-09-25 11:25:48 +0200
Branch: REL_12_STABLE [90cfd269f] 2021-09-25 11:25:48 +0200
Branch: REL_11_STABLE [0f28d267c] 2021-09-25 11:25:48 +0200
Branch: REL_10_STABLE [841075a65] 2021-09-25 11:25:48 +0200
Author: Daniel Gustafsson <dgustafsson@postgresql.org>
Branch: master [318df8023] 2021-08-10 15:01:52 +0200
Branch: REL_14_STABLE Release: REL_14_0 [4fa2b15e1] 2021-09-25 11:27:20 +0200
Branch: REL_13_STABLE [135d8687a] 2021-09-25 11:27:20 +0200
Branch: REL_12_STABLE [00c72da4a] 2021-09-25 11:27:20 +0200
Branch: REL_11_STABLE [11901cd96] 2021-09-25 11:27:20 +0200
Branch: REL_10_STABLE [e802b594e] 2021-09-25 11:27:20 +0200
Author: Daniel Gustafsson <dgustafsson@postgresql.org>
Branch: master [72bbff4cd] 2021-08-10 15:08:46 +0200
Branch: REL_14_STABLE Release: REL_14_0 [6d0001aab] 2021-09-25 11:27:28 +0200
Branch: REL_13_STABLE [8e7199453] 2021-09-25 11:27:28 +0200
Branch: REL_12_STABLE [7b6ce36fb] 2021-09-25 11:27:28 +0200
Branch: REL_11_STABLE [19e91a40b] 2021-09-25 11:27:28 +0200
Branch: REL_10_STABLE [eb643536b] 2021-09-25 11:27:28 +0200
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [41f30ecc2] 2021-10-20 16:48:24 +0900
Branch: REL_14_STABLE [81aefaea8] 2021-10-20 16:48:57 +0900
Branch: REL_13_STABLE [abb9ee92c] 2021-10-20 16:49:00 +0900
Branch: REL_12_STABLE [1539e0ecd] 2021-10-20 16:49:03 +0900
Branch: REL_11_STABLE [e00d45fea] 2021-10-20 16:49:06 +0900
Branch: REL_10_STABLE [922e3c3b7] 2021-10-20 16:49:10 +0900
Branch: REL9_6_STABLE [d581960df] 2021-10-20 16:49:14 +0900
-->
     <para>
      Support OpenSSL 3.0.0
      (Peter Eisentraut, Daniel Gustafsson, Michael Paquier)
      <ulink url="&commit_baseurl;a69e1506f">&sect;</ulink>
      <ulink url="&commit_baseurl;135d8687a">&sect;</ulink>
      <ulink url="&commit_baseurl;8e7199453">&sect;</ulink>
      <ulink url="&commit_baseurl;abb9ee92c">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Daniel Gustafsson <dgustafsson@postgresql.org>
Branch: master [31f860a52] 2021-08-17 14:30:01 +0200
Branch: REL_14_STABLE Release: REL_14_0 [b88377ad6] 2021-08-17 14:30:25 +0200
Branch: REL_13_STABLE [e15f32f0e] 2021-08-17 14:31:00 +0200
Branch: REL_12_STABLE [ed209db77] 2021-08-17 14:31:08 +0200
Branch: REL_11_STABLE [f1d5a94fc] 2021-08-17 14:30:39 +0200
Branch: REL_10_STABLE [ef7e24ff7] 2021-08-17 14:30:51 +0200
Branch: REL9_6_STABLE [0a88d4ece] 2021-08-17 14:31:22 +0200
-->
     <para>
      Set correct type identifier on OpenSSL BIO (I/O abstraction)
      objects created by <productname>PostgreSQL</productname>
      (Itamar Gafni)
      <ulink url="&commit_baseurl;e15f32f0e">&sect;</ulink>
     </para>

     <para>
      This oversight probably only matters for code that is doing
      tasks like auditing the OpenSSL installation.  But it's
      nominally a violation of the OpenSSL API, so fix it.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [4c2eab3a0] 2021-09-03 10:52:11 +0200
Branch: master [55392bc5b] 2021-09-06 09:12:34 +0200
Branch: REL_14_STABLE Release: REL_14_0 [1e9afc868] 2021-09-06 09:41:03 +0200
Branch: REL_13_STABLE [9f9ae019d] 2021-09-06 09:43:05 +0200
Branch: REL_12_STABLE [60bf7e69b] 2021-09-06 09:43:18 +0200
-->
     <para>
      Fix our <filename>pkg-config</filename> files to again support static
      linking of <application>libpq</application> (Peter Eisentraut)
      <ulink url="&commit_baseurl;9f9ae019d">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [e757080e0] 2021-09-11 15:19:31 -0400
Branch: REL_14_STABLE Release: REL_14_0 [b33283cbd] 2021-09-11 15:19:43 -0400
Branch: REL_13_STABLE [7e420072e] 2021-09-11 15:19:49 -0400
Branch: REL_12_STABLE [3adde7eb6] 2021-09-11 15:19:54 -0400
Branch: REL_11_STABLE [3be381a90] 2021-09-11 15:19:58 -0400
Branch: REL_10_STABLE [daac97eb0] 2021-09-11 15:20:04 -0400
Branch: REL9_6_STABLE [ec89d7ace] 2021-09-11 15:20:12 -0400
-->
     <para>
      Make <function>pg_regexec()</function> robust against an
      out-of-range <replaceable>search_start</replaceable> parameter
      (Tom Lane)
      <ulink url="&commit_baseurl;7e420072e">&sect;</ulink>
     </para>

     <para>
      Return <literal>REG_NOMATCH</literal>, instead of possibly crashing,
      when <replaceable>search_start</replaceable> is past the end of the
      string.  This case is probably unreachable within
      core <productname>PostgreSQL</productname>, but extensions might be
      more careless about the parameter value.
     </para>
    </listitem>

    <listitem>
<!--
Author: Jeff Davis <jdavis@postgresql.org>
Branch: master [7821a0bf2] 2021-10-14 12:24:00 -0700
Branch: REL_14_STABLE [0b90f1c4c] 2021-10-14 12:24:22 -0700
Branch: REL_13_STABLE [20f785732] 2021-10-14 12:24:47 -0700
Branch: REL_12_STABLE [ab11f6e46] 2021-10-14 12:25:07 -0700
Branch: REL_11_STABLE [3f5d481ef] 2021-10-14 12:25:30 -0700
Branch: REL_10_STABLE [9364f64a2] 2021-10-14 12:25:48 -0700
Branch: REL9_6_STABLE [ae6abeb88] 2021-10-14 12:26:26 -0700
-->
     <para>
      Ensure that <function>GetSharedSecurityLabel()</function> can be
      used in a newly-started session that has not yet built its critical
      relation cache entries (Jeff Davis)
      <ulink url="&commit_baseurl;20f785732">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9b8d68cc6] 2021-10-02 16:05:42 -0400
Branch: REL_14_STABLE [fa8db4879] 2021-10-02 16:06:09 -0400
Branch: REL_13_STABLE [9c76689de] 2021-10-02 16:06:23 -0400
Branch: REL_12_STABLE [e5b25f19b] 2021-10-02 16:06:45 -0400
Branch: REL_11_STABLE [9cc919b51] 2021-10-02 16:06:55 -0400
Branch: REL_10_STABLE [e323630cd] 2021-10-02 16:07:16 -0400
Branch: REL9_6_STABLE [dbec5a2fe] 2021-10-02 16:07:37 -0400
Branch: master [ad740067a] 2021-10-02 16:05:10 -0400
Branch: REL_14_STABLE [81464999b] 2021-10-02 16:06:09 -0400
Branch: REL_13_STABLE [7ba8eb81f] 2021-10-02 16:06:23 -0400
Branch: REL_12_STABLE [4721e8aa6] 2021-10-02 16:06:45 -0400
Branch: REL_11_STABLE [bb6d42669] 2021-10-02 16:06:55 -0400
Branch: REL_10_STABLE [cb0799db0] 2021-10-02 16:07:16 -0400
Branch: REL9_6_STABLE [37cbe0f79] 2021-10-02 16:07:36 -0400
Branch: master [c1aa3b3c0] 2021-10-04 14:52:39 -0400
Branch: REL_14_STABLE [919c08d90] 2021-10-04 14:52:17 -0400
Branch: REL_13_STABLE [c53ff69e1] 2021-10-04 14:52:17 -0400
Branch: REL_12_STABLE [07873a5dc] 2021-10-04 14:52:17 -0400
Branch: REL_11_STABLE [d0b0b70dc] 2021-10-04 14:52:17 -0400
Branch: REL_10_STABLE [cd2479142] 2021-10-04 14:52:17 -0400
Branch: REL9_6_STABLE [b5f34ae08] 2021-10-04 14:52:17 -0400
-->
     <para>
      Use the CLDR project's data to map Windows time zone names to IANA
      time zones (Tom Lane)
      <ulink url="&commit_baseurl;9c76689de">&sect;</ulink>
      <ulink url="&commit_baseurl;7ba8eb81f">&sect;</ulink>
      <ulink url="&commit_baseurl;c53ff69e1">&sect;</ulink>
     </para>

     <para>
      When running on Windows, <application>initdb</application> attempts
      to set the new cluster's <varname>timezone</varname> parameter to
      the IANA time zone matching the system's prevailing time zone.
      We were using a mapping table that we'd generated years ago and
      updated only fitfully; unsurprisingly, it contained a number of
      errors as well as omissions of recently-added zones.  It turns out
      that CLDR has been tracking the most appropriate mappings, so start
      using their data.  This change will not affect any existing
      installation, only newly-initialized clusters.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [937aafd6d] 2021-10-29 11:38:18 -0400
Branch: REL_14_STABLE [0c8a40b39] 2021-10-29 11:38:32 -0400
Branch: REL_13_STABLE [4cd72add0] 2021-10-29 11:38:38 -0400
Branch: REL_12_STABLE [14b8d25d6] 2021-10-29 11:38:47 -0400
Branch: REL_11_STABLE [91455f7c6] 2021-10-29 11:38:53 -0400
Branch: REL_10_STABLE [d0fe211ce] 2021-10-29 11:38:58 -0400
Branch: REL9_6_STABLE [22a498b9b] 2021-10-29 11:39:05 -0400
-->
     <para>
      Update time zone data files to <application>tzdata</application>
      release 2021e for DST law changes in Fiji, Jordan, Palestine, and
      Samoa, plus historical corrections for Barbados, Cook Islands,
      Guyana, Niue, Portugal, and Tonga. (Tom Lane)
      <ulink url="&commit_baseurl;4cd72add0">&sect;</ulink>
     </para>

     <para>
      Also, the Pacific/Enderbury zone has been renamed to Pacific/Kanton.
      Also, the following zones have been merged into nearby, more-populous
      zones whose clocks have agreed with them since 1970: Africa/Accra,
      America/Atikokan, America/Blanc-Sablon, America/Creston,
      America/Curacao, America/Nassau, America/Port_of_Spain,
      Antarctica/DumontDUrville, and Antarctica/Syowa.
      In all these cases, the previous zone name remains as an alias.
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-4">
  <title>Release 13.4</title>

  <formalpara>
  <title>Release date:</title>
  <para>2021-08-12</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.3.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.4</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you are upgrading from a version earlier than 13.2,
    see <xref linkend="release-13-2"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [6ee41a301] 2021-05-31 12:03:00 -0400
Branch: REL_13_STABLE [fe6f63286] 2021-05-31 12:03:00 -0400
Branch: REL_12_STABLE [6f9e7f21f] 2021-05-31 12:03:00 -0400
Branch: REL_11_STABLE [fe194f731] 2021-05-31 12:03:00 -0400
-->
     <para>
      Fix mis-planning of repeated application of a projection step
      (Tom Lane)
      <ulink url="&commit_baseurl;fe6f63286">&sect;</ulink>
     </para>

     <para>
      The planner could create an incorrect plan in cases where two
      ProjectionPaths were stacked on top of each other.  The only known
      way to trigger that situation involves parallel sort operations, but
      there may be other instances.  The result would be crashes or
      incorrect query results.
      Disclosure of server memory contents is also possible.
      (CVE-2021-3677)
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master Release: REL_14_BR [01e6f1a84] 2021-05-25 10:10:09 +0900
Branch: REL_13_STABLE [a23c0b00f] 2021-05-25 10:11:13 +0900
Branch: REL_12_STABLE [3f8072be8] 2021-05-25 10:11:17 +0900
Branch: REL_11_STABLE [96918b76f] 2021-05-25 10:11:21 +0900
Branch: REL_10_STABLE [c64b5d10d] 2021-05-25 10:11:26 +0900
Branch: REL9_6_STABLE [7777df34d] 2021-05-25 10:11:33 +0900
-->
     <para>
      Disallow SSL renegotiation more completely (Michael Paquier)
      <ulink url="&commit_baseurl;a23c0b00f">&sect;</ulink>
     </para>

     <para>
      SSL renegotiation has been disabled for some time, but the server
      would still cooperate with a client-initiated renegotiation request.
      A maliciously crafted renegotiation request could result in a server
      crash (see OpenSSL issue CVE-2021-3449).  Disable the feature
      altogether on OpenSSL versions that permit doing so, which are
      1.1.0h and newer.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [84f5c2908] 2021-05-21 14:03:59 -0400
Branch: REL_13_STABLE [d18ee6f92] 2021-05-21 14:03:53 -0400
Branch: REL_12_STABLE [41c6a5bec] 2021-05-21 14:03:53 -0400
Branch: REL_11_STABLE [ef9480509] 2021-05-21 14:03:53 -0400
Branch: master Release: REL_14_BR [3a09d75b4] 2021-06-10 12:27:27 -0400
Branch: REL_13_STABLE [6e43f1c2d] 2021-06-10 12:27:27 -0400
Branch: REL_12_STABLE [26383da7d] 2021-06-10 12:27:27 -0400
Branch: REL_11_STABLE [eea081ad0] 2021-06-10 12:27:27 -0400
Branch: master Release: REL_14_BR [d102aafb6] 2021-06-22 17:48:39 -0400
Branch: REL_13_STABLE [6f1321d5a] 2021-06-22 17:48:39 -0400
Branch: REL_12_STABLE [29d5d5761] 2021-06-22 17:48:39 -0400
Branch: REL_11_STABLE [77200c569] 2021-06-22 17:48:39 -0400
Branch: master [ef12f32c0] 2021-07-31 11:50:14 -0400
Branch: REL_14_STABLE [ec410c985] 2021-07-31 11:50:14 -0400
Branch: REL_13_STABLE [93f99693f] 2021-07-31 11:50:14 -0400
Branch: REL_12_STABLE [f26043645] 2021-07-31 11:50:14 -0400
Branch: REL_11_STABLE [cefb1230e] 2021-07-31 11:50:14 -0400
Branch: master Release: REL_14_BR [f21fadafa] 2021-05-20 18:32:37 -0400
Branch: REL_13_STABLE [c64183f23] 2021-05-20 18:32:37 -0400
Branch: REL_12_STABLE [8d341d6cb] 2021-05-20 18:32:37 -0400
Branch: REL_11_STABLE [0c1b2cb17] 2021-05-20 18:32:37 -0400
-->
     <para>
      Restore the Portal-level snapshot after <command>COMMIT</command>
      or <command>ROLLBACK</command> within a procedure (Tom Lane)
      <ulink url="&commit_baseurl;d18ee6f92">&sect;</ulink>
      <ulink url="&commit_baseurl;6e43f1c2d">&sect;</ulink>
      <ulink url="&commit_baseurl;6f1321d5a">&sect;</ulink>
      <ulink url="&commit_baseurl;93f99693f">&sect;</ulink>
      <ulink url="&commit_baseurl;c64183f23">&sect;</ulink>
     </para>

     <para>
      This change fixes cases where an attempt to fetch a toasted value
      immediately after <command>COMMIT</command>/<command>ROLLBACK</command>
      would fail with errors like <quote>no known snapshots</quote> or
      <quote>missing chunk number 0 for toast value</quote>.
     </para>

     <para>
      Some extensions may attempt to execute SQL code outside of any
      Portal.  They are responsible for ensuring that an outer snapshot
      exists before doing so.  Previously, not providing a snapshot might
      work or it might not; now it will consistently fail
      with <quote>cannot execute SQL without an outer snapshot or
      portal</quote>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [ba2c6d6ce] 2021-06-08 17:50:29 -0400
Branch: REL_13_STABLE [c1fd756fd] 2021-06-08 17:50:15 -0400
Branch: REL_12_STABLE [c3b508268] 2021-06-08 17:50:15 -0400
Branch: REL_11_STABLE [2757865fa] 2021-06-08 17:50:15 -0400
Branch: master Release: REL_14_BR [be9009890] 2021-06-08 18:40:06 -0400
Branch: REL_13_STABLE [c5b281841] 2021-06-08 18:40:06 -0400
Branch: REL_12_STABLE [182323300] 2021-06-08 18:40:06 -0400
Branch: REL_11_STABLE [5b7bf9f72] 2021-06-08 18:40:06 -0400
-->
     <para>
      Avoid misbehavior when persisting the output of a cursor that's
      reading a non-stable query (Tom Lane)
      <ulink url="&commit_baseurl;c1fd756fd">&sect;</ulink>
      <ulink url="&commit_baseurl;c5b281841">&sect;</ulink>
     </para>

     <para>
      Previously, we'd always rewind and re-read the whole query result,
      possibly getting results different from the earlier execution,
      causing great confusion later.  For a NO SCROLL cursor, we can fix
      this by only storing the not-yet-read portion of the query output,
      which is sufficient since a NO SCROLL cursor can't be backed up.
      Cursors with the SCROLL option remain at hazard, but that was
      already documented to be an unsafe option to use with a non-stable
      query.  Make those documentation warnings stronger.
     </para>

     <para>
      Also force NO SCROLL mode for the implicit cursor used by
      a <application>PL/pgSQL</application> FOR-over-query loop,
      to avoid this type of problem when persisting such a cursor
      during an intra-procedure commit.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [1103033ae] 2021-06-01 11:12:56 -0400
Branch: REL_13_STABLE [e5b0fffa1] 2021-06-01 11:12:56 -0400
Branch: REL_12_STABLE [762fe98b1] 2021-06-01 11:12:56 -0400
Branch: REL_11_STABLE [dc272157a] 2021-06-01 11:12:56 -0400
Branch: REL_10_STABLE [39862dde4] 2021-06-01 11:12:56 -0400
Branch: REL9_6_STABLE [3eca18522] 2021-06-01 11:12:56 -0400
-->
     <para>
      Reject <literal>SELECT ... GROUP BY GROUPING SETS (()) FOR
      UPDATE</literal> (Tom Lane)
      <ulink url="&commit_baseurl;e5b0fffa1">&sect;</ulink>
     </para>

     <para>
      This should be disallowed, just as <literal>FOR UPDATE</literal>
      with a plain <literal>GROUP BY</literal> is disallowed, but the test
      for that failed to handle empty grouping sets correctly.
      The end result would be a null-pointer dereference in the executor.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a9da1934e] 2021-07-09 11:02:26 -0400
Branch: REL_14_STABLE [39b6e85f1] 2021-07-09 11:02:26 -0400
Branch: REL_13_STABLE [6edccac16] 2021-07-09 11:02:26 -0400
Branch: REL_12_STABLE [9c729bd30] 2021-07-09 11:02:26 -0400
Branch: REL_11_STABLE [158594f99] 2021-07-09 11:02:26 -0400
Branch: REL_10_STABLE [51df19a05] 2021-07-09 11:02:26 -0400
Branch: REL9_6_STABLE [f0271cb15] 2021-07-09 11:02:26 -0400
-->
     <para>
      Reject cases where a query in <literal>WITH</literal>
      rewrites to just <command>NOTIFY</command> (Tom Lane)
      <ulink url="&commit_baseurl;6edccac16">&sect;</ulink>
     </para>

     <para>
      Such cases previously crashed.
     </para>
    </listitem>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [e7fc488ad] 2021-07-10 12:42:59 +0100
Branch: REL_14_STABLE [06883d58f] 2021-07-10 12:45:00 +0100
Branch: REL_13_STABLE [f23a9b8a4] 2021-07-10 12:46:13 +0100
Branch: REL_12_STABLE [357b66ef9] 2021-07-10 12:47:45 +0100
Branch: REL_11_STABLE [5763ef42c] 2021-07-10 12:48:59 +0100
Branch: REL_10_STABLE [54a0ec1bd] 2021-07-10 12:50:05 +0100
Branch: REL9_6_STABLE [f8abf6944] 2021-07-10 12:51:22 +0100
-->
     <para>
      In <type>numeric</type> multiplication, round the result rather than
      failing if it would have more than 16383 digits after the decimal
      point (Dean Rasheed)
      <ulink url="&commit_baseurl;f23a9b8a4">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [4dd5ce2fd] 2021-07-31 11:21:44 +0100
Branch: REL_14_STABLE [0d6b87497] 2021-07-31 11:23:48 +0100
Branch: REL_13_STABLE [053ec4e0c] 2021-07-31 11:25:39 +0100
Branch: REL_12_STABLE [5c62920fa] 2021-07-31 11:27:02 +0100
Branch: REL_11_STABLE [dcd0ab672] 2021-07-31 11:28:10 +0100
Branch: REL_10_STABLE [39b0bda67] 2021-07-31 11:29:50 +0100
Branch: REL9_6_STABLE [5cf350ce0] 2021-07-31 11:31:18 +0100
Branch: REL_11_STABLE [434ddfb79] 2021-08-05 22:24:28 +0100
Branch: master [2642df9fa] 2021-08-06 21:29:15 +0100
Branch: REL_14_STABLE [032556570] 2021-08-06 21:30:25 +0100
Branch: REL_13_STABLE [da188b993] 2021-08-06 21:31:20 +0100
Branch: REL_12_STABLE [cc4420f88] 2021-08-06 21:31:58 +0100
Branch: REL_11_STABLE [7a9c9acfe] 2021-08-06 21:32:46 +0100
Branch: REL_10_STABLE [f20b6bc96] 2021-08-06 21:33:25 +0100
Branch: REL9_6_STABLE [5b7b92ad7] 2021-08-06 21:34:04 +0100
-->
     <para>
      Fix corner-case errors and loss of precision when
      raising <type>numeric</type> values to very large powers
      (Dean Rasheed)
      <ulink url="&commit_baseurl;053ec4e0c">&sect;</ulink>
      <ulink url="&commit_baseurl;da188b993">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [226ec49ff] 2021-08-05 09:24:11 +0100
Branch: REL_14_STABLE [ecbdbdfd9] 2021-08-05 09:27:35 +0100
Branch: REL_13_STABLE [a72ad6315] 2021-08-05 09:29:13 +0100
Branch: REL_12_STABLE [43644bd3b] 2021-08-05 09:30:37 +0100
Branch: REL_11_STABLE [4851940a5] 2021-08-05 09:32:03 +0100
Branch: REL_10_STABLE [661558bc3] 2021-08-05 09:33:55 +0100
Branch: REL9_6_STABLE [ed3e1663c] 2021-08-05 09:35:46 +0100
-->
     <para>
      Fix division-by-zero failure in <function>to_char()</function>
      with <literal>EEEE</literal> format and a <type>numeric</type> input
      value less than 10^(-1001) (Dean Rasheed)
      <ulink url="&commit_baseurl;a72ad6315">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [55fe60938] 2021-07-09 14:04:30 +1200
Branch: REL_14_STABLE [6de3a21bb] 2021-07-09 14:04:40 +1200
Branch: REL_13_STABLE [6f88b68ff] 2021-07-09 14:04:49 +1200
Branch: REL_12_STABLE [efc42a1e1] 2021-07-09 14:04:56 +1200
Branch: REL_11_STABLE [45bad6a39] 2021-07-09 14:05:05 +1200
Branch: REL_10_STABLE [1efcd5720] 2021-07-09 14:05:15 +1200
Branch: REL9_6_STABLE [674ee3b76] 2021-07-09 14:05:24 +1200
Branch: REL_13_STABLE [87103002c] 2021-07-09 15:12:31 +1200
Branch: REL_12_STABLE [b18621139] 2021-07-09 15:13:01 +1200
Branch: REL_11_STABLE [137af4f27] 2021-07-09 15:13:29 +1200
Branch: REL_10_STABLE [dd76aa54a] 2021-07-09 15:14:01 +1200
Branch: REL9_6_STABLE [3e474a708] 2021-07-09 15:14:26 +1200
-->
     <para>
      Fix <function>pg_size_pretty(bigint)</function> to round negative
      values consistently with the way it rounds positive ones (and
      consistently with the <type>numeric</type> version) (Dean Rasheed,
      David Rowley)
      <ulink url="&commit_baseurl;6f88b68ff">&sect;</ulink>
      <ulink url="&commit_baseurl;87103002c">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [1250aad42] 2021-06-12 13:29:24 -0400
Branch: REL_13_STABLE [f479ea94b] 2021-06-12 13:29:24 -0400
Branch: REL_12_STABLE [7681b78fb] 2021-06-12 13:29:24 -0400
Branch: REL_11_STABLE [25d1ef1aa] 2021-06-12 13:29:24 -0400
Branch: REL_10_STABLE [26a053533] 2021-06-12 13:29:24 -0400
Branch: REL9_6_STABLE [c1ffbbcbc] 2021-06-12 13:29:24 -0400
-->
     <para>
      Make <literal>pg_filenode_relation(0, 0)</literal> return NULL
      rather than failing (Justin Pryzby)
      <ulink url="&commit_baseurl;f479ea94b">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [626731db2] 2021-07-11 12:54:24 -0400
Branch: REL_14_STABLE [69dfc36fd] 2021-07-11 12:54:24 -0400
Branch: REL_13_STABLE [1c612bc98] 2021-07-11 12:54:24 -0400
Branch: REL_12_STABLE [92340ba5a] 2021-07-11 12:54:24 -0400
Branch: REL_11_STABLE [6bd9ae173] 2021-07-11 12:54:24 -0400
Branch: REL_10_STABLE [1d49c8887] 2021-07-11 12:54:24 -0400
Branch: REL9_6_STABLE [734be249d] 2021-07-11 12:54:24 -0400
-->
     <para>
      Make <command>ALTER EXTENSION</command> lock the extension when
      adding or removing a member object (Tom Lane)
      <ulink url="&commit_baseurl;1c612bc98">&sect;</ulink>
     </para>

     <para>
      The previous coding allowed <command>ALTER EXTENSION
      ADD/DROP</command> to occur concurrently with <command>DROP
      EXTENSION</command>, leading to a crash or corrupt catalog entries.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [29abde637] 2021-07-19 10:36:15 +0530
Branch: REL_14_STABLE [40295d158] 2021-07-19 10:54:21 +0530
Branch: REL_13_STABLE [bfa2a926d] 2021-07-19 11:04:21 +0530
Branch: REL_12_STABLE [f2f459f18] 2021-07-19 11:15:03 +0530
Branch: REL_11_STABLE [eb158e74a] 2021-07-19 11:23:35 +0530
Branch: REL_10_STABLE [22fd784af] 2021-07-19 11:32:08 +0530
-->
     <para>
      Fix <command>ALTER SUBSCRIPTION</command> to reject an empty slot
      name (Japin Li)
      <ulink url="&commit_baseurl;bfa2a926d">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [df80fa2ee] 2021-07-16 13:01:43 -0400
Branch: REL_14_STABLE [eef92de11] 2021-07-16 13:01:43 -0400
Branch: REL_13_STABLE [c31516ae5] 2021-07-16 13:01:43 -0400
Branch: REL_12_STABLE [7584ec1f6] 2021-07-16 13:01:43 -0400
Branch: REL_11_STABLE [fed35bd4a] 2021-07-16 13:01:43 -0400
-->
     <para>
      When cloning a partitioned table's triggers to a new partition,
      ensure that their enabled status is copied
      (&Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;c31516ae5">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9179a82d7] 2021-08-07 13:29:32 -0400
Branch: REL_14_STABLE [2c915905e] 2021-08-07 13:29:32 -0400
Branch: REL_13_STABLE [ba9f665a4] 2021-08-07 13:29:32 -0400
Branch: REL_12_STABLE [1ff1e4a60] 2021-08-07 13:29:32 -0400
Branch: REL_11_STABLE [d33fc4110] 2021-08-07 13:29:32 -0400
Branch: REL_10_STABLE [ac818984a] 2021-08-07 13:29:32 -0400
Branch: REL9_6_STABLE [c08b3a9eb] 2021-08-07 13:29:32 -0400
Author: Michael Paquier <michael@paquier.xyz>
Branch: master Release: REL_14_BR [187682c32] 2021-06-03 15:28:24 +0900
Branch: REL_13_STABLE [75d66d10e] 2021-06-03 15:28:37 +0900
Branch: REL_12_STABLE [4ceaa760b] 2021-06-03 15:28:41 +0900
Branch: REL_11_STABLE [dbc9dbba5] 2021-06-03 15:28:45 +0900
Branch: REL_10_STABLE [20f70f558] 2021-06-03 15:28:53 +0900
Branch: REL9_6_STABLE [d9525c46c] 2021-06-03 15:29:01 +0900
-->
     <para>
      Avoid alias conflicts in queries generated
      for <command>REFRESH MATERIALIZED VIEW CONCURRENTLY</command>
      (Tom Lane, Bharath Rupireddy)
      <ulink url="&commit_baseurl;ba9f665a4">&sect;</ulink>
      <ulink url="&commit_baseurl;75d66d10e">&sect;</ulink>
     </para>

     <para>
      This command failed on materialized views containing columns with
      certain names, notably <structfield>mv</structfield>
      and <structfield>newdata</structfield>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [6310809c4] 2021-07-24 18:35:52 -0400
Branch: REL_14_STABLE [712ba6b8b] 2021-07-24 18:35:52 -0400
Branch: REL_13_STABLE [f47408cdc] 2021-07-24 18:35:52 -0400
Branch: REL_12_STABLE [899785b4f] 2021-07-24 18:35:52 -0400
Branch: REL_11_STABLE [7b2262a21] 2021-07-24 18:35:52 -0400
Branch: REL_10_STABLE [654372169] 2021-07-24 18:35:52 -0400
Branch: REL9_6_STABLE [1861390e6] 2021-07-24 18:35:52 -0400
-->
     <para>
      Fix <command>PREPARE TRANSACTION</command> to check correctly
      for conflicting session-lifespan and transaction-lifespan locks
      (Tom Lane)
      <ulink url="&commit_baseurl;f47408cdc">&sect;</ulink>
     </para>

     <para>
      A transaction cannot be prepared if it has both session-lifespan and
      transaction-lifespan locks on the same advisory-lock ID value.  This
      restriction was not fully checked, which could lead to a PANIC
      during <command>PREPARE TRANSACTION</command>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [d21fca084] 2021-06-18 18:00:09 -0400
Branch: REL_13_STABLE [33af10c59] 2021-06-18 18:00:09 -0400
Branch: REL_12_STABLE [c58a41605] 2021-06-18 18:00:09 -0400
Branch: REL_11_STABLE [ea5ae3ae1] 2021-06-18 18:00:09 -0400
Branch: REL_10_STABLE [b7e3a4407] 2021-06-18 18:00:09 -0400
Branch: REL9_6_STABLE [0b29b41e5] 2021-06-18 18:00:09 -0400
-->
     <para>
      Fix misbehavior of <command>DROP OWNED BY</command> when the target
      role is listed more than once in an RLS policy (Tom Lane)
      <ulink url="&commit_baseurl;33af10c59">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [5a0f1c8c0] 2021-06-25 13:59:38 -0400
Branch: REL_13_STABLE [ba815f00a] 2021-06-25 13:59:38 -0400
Branch: REL_12_STABLE [f851696a2] 2021-06-25 13:59:38 -0400
Branch: REL_11_STABLE [fea89d64e] 2021-06-25 13:59:38 -0400
Branch: REL_10_STABLE [f5b780c45] 2021-06-25 13:59:38 -0400
Branch: REL9_6_STABLE [9c7a150ae] 2021-06-25 13:59:38 -0400
-->
     <para>
      Skip unnecessary error tests when removing a role from an RLS policy
      during <command>DROP OWNED BY</command> (Tom Lane)
      <ulink url="&commit_baseurl;ba815f00a">&sect;</ulink>
     </para>

     <para>
      Notably, this fixes some cases where it was necessary to be a
      superuser to use <command>DROP OWNED BY</command>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master Release: REL_14_BR [9f12a3b95] 2020-11-04 15:13:08 +1300
Branch: REL_13_STABLE [6dcb185bf] 2021-06-22 13:21:25 +1200
-->
     <para>
      Re-allow old-style Windows locale names in <command>CREATE
      COLLATION</command> commands (Thomas Munro)
      <ulink url="&commit_baseurl;6dcb185bf">&sect;</ulink>
     </para>

     <para>
      Previously we were failing because the operating system can't
      provide version information for such locales.  At some point
      we may decide to require version information, but no such policy
      exists yet, so re-allow the case for now.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [4b1007445] 2021-05-21 15:12:08 -0400
Branch: REL_13_STABLE [849c7971d] 2021-05-21 15:12:19 -0400
Branch: REL_12_STABLE [61feb8670] 2021-05-21 15:12:37 -0400
-->
     <para>
      Disallow whole-row variables in <literal>GENERATED</literal>
      expressions (Tom Lane)
      <ulink url="&commit_baseurl;849c7971d">&sect;</ulink>
     </para>

     <para>
      Use of a whole-row variable clearly violates the rule that a
      generated column cannot depend on itself, so such cases have no
      well-defined behavior.  The actual behavior frequently included a
      crash.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [2b0ee126b] 2021-05-21 15:02:06 -0400
Branch: REL_13_STABLE [77e3204ec] 2021-05-21 15:02:07 -0400
Branch: REL_12_STABLE [dfe51ffbe] 2021-05-21 15:02:07 -0400
-->
     <para>
      Fix usage of <structfield>tableoid</structfield>
      in <literal>GENERATED</literal> expressions (Tom Lane)
      <ulink url="&commit_baseurl;77e3204ec">&sect;</ulink>
     </para>

     <para>
      Some code paths failed to provide a valid value for this system
      column while evaluating a <literal>GENERATED</literal> expression.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master Release: REL_14_BR [0a4efdc7e] 2021-06-18 06:51:12 -0400
Branch: REL_13_STABLE [5b6b5e5ee] 2021-06-18 07:44:58 -0400
Branch: REL_12_STABLE [6432bfe8a] 2021-06-18 07:46:21 -0400
Branch: REL_11_STABLE [306c31804] 2021-06-18 07:53:08 -0400
Branch: REL_11_STABLE [0d3b69ae0] 2021-06-18 11:45:45 -0400
-->
     <para>
      Don't store a <quote>fast default</quote> when adding a column to a
      foreign table (Andrew Dunstan)
      <ulink url="&commit_baseurl;5b6b5e5ee">&sect;</ulink>
     </para>

     <para>
      The fast default is useless since no local heap storage exists for
      such a table, but it confused subsequent operations.  In addition to
      suppressing creation of such catalog entries in <command>ALTER
      TABLE</command> commands, adjust the downstream code to cope
      when one is incorrectly present.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master Release: REL_14_BR [83158f74d] 2020-09-14 13:56:41 +0900
Branch: REL_13_STABLE [acb60edf0] 2021-06-28 10:39:09 +0900
Branch: REL_12_STABLE [e52f7cbec] 2021-06-28 10:43:01 +0900
Branch: REL_11_STABLE [08acba558] 2021-06-28 10:43:04 +0900
Branch: REL_10_STABLE [3c465883b] 2021-06-28 10:43:08 +0900
Branch: REL9_6_STABLE [d3d0cbeb6] 2021-06-28 10:43:13 +0900
Branch: master Release: REL_14_BR [09a69f6e2] 2021-06-28 11:17:05 +0900
Branch: REL_13_STABLE [fd7bc10ab] 2021-06-28 11:17:12 +0900
Branch: REL_12_STABLE [ce8949c4b] 2021-06-28 11:17:16 +0900
Branch: REL_11_STABLE [38ca11ade] 2021-06-28 11:17:20 +0900
Branch: REL_10_STABLE [5160d5bb1] 2021-06-28 11:17:25 +0900
Branch: REL9_6_STABLE [21257a8f6] 2021-06-28 11:17:30 +0900
-->
     <para>
      Allow index state flags to be updated transactionally
      (Michael Paquier, Andrey Lepikhov)
      <ulink url="&commit_baseurl;acb60edf0">&sect;</ulink>
      <ulink url="&commit_baseurl;fd7bc10ab">&sect;</ulink>
     </para>

     <para>
      This avoids failures when dealing with index predicates that aren't
      really immutable.  While that's not considered a supported case, the
      original reason for using a non-transactional update here is long
      gone, so we may as well change it.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL_13_STABLE [102f31a20] 2021-06-18 12:09:22 -0400
Branch: REL_12_STABLE [b2c740c42] 2021-06-18 12:09:22 -0400
Branch: REL_11_STABLE [4b8b3562e] 2021-06-18 12:09:22 -0400
Branch: REL_10_STABLE [f172438ef] 2021-06-18 12:09:22 -0400
Branch: REL9_6_STABLE [1a3d30255] 2021-06-18 12:09:22 -0400
-->
     <para>
      Avoid corrupting the plan cache entry when <command>CREATE
      DOMAIN</command> or <command>ALTER DOMAIN</command> appears
      in a cached plan (Tom Lane)
      <ulink url="&commit_baseurl;102f31a20">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [f560209c6] 2020-09-14 12:35:00 -0400
Branch: REL_13_STABLE [4a20de9d9] 2021-06-25 10:46:10 -0400
Branch: REL_12_STABLE [04a476057] 2021-06-25 10:46:10 -0400
Branch: REL_11_STABLE [c39983600] 2021-06-25 10:46:10 -0400
Branch: REL_10_STABLE [4040139f2] 2021-06-25 10:46:10 -0400
-->
     <para>
      Make walsenders show their latest replication commands
      in <structname>pg_stat_activity</structname> (Tom Lane)
      <ulink url="&commit_baseurl;4a20de9d9">&sect;</ulink>
     </para>

     <para>
      Previously, a walsender would show its latest SQL command, which was
      confusing if it's now doing some replication operation instead.
      Now we show replication-protocol commands on the same footing as SQL
      commands.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [93a0bf239] 2021-07-27 15:44:12 -0400
Branch: REL_14_STABLE [ad3b40eb2] 2021-07-27 15:44:12 -0400
Branch: REL_13_STABLE [b8f91d7f9] 2021-07-27 15:44:12 -0400
Branch: REL_12_STABLE [6feb229f5] 2021-07-27 15:44:12 -0400
Branch: REL_11_STABLE [ddd1eac99] 2021-07-27 15:44:12 -0400
Branch: REL_10_STABLE [04fa0e11a] 2021-07-27 15:44:12 -0400
Branch: REL9_6_STABLE [85ec6c322] 2021-07-27 15:44:12 -0400
-->
     <para>
      Make
      <structname>pg_settings</structname>.<structfield>pending_restart</structfield>
      show as true when the pertinent entry
      in <filename>postgresql.conf</filename> has been removed
      (&Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;b8f91d7f9">&sect;</ulink>
     </para>

     <para>
      <structfield>pending_restart</structfield> correctly showed the case
      where an entry that cannot be changed without a postmaster restart
      has been modified, but not where the entry had been removed
      altogether.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [28d936031] 2021-07-25 14:02:27 -0400
Branch: REL_14_STABLE [b154ee63b] 2021-07-25 14:02:27 -0400
Branch: REL_13_STABLE [2b8f3f5a7] 2021-07-25 14:02:27 -0400
-->
     <para>
      On 64-bit Windows, allow the effective value
      of <varname>work_mem</varname>
      times <varname>hash_mem_multiplier</varname> to exceed 2GB
      (Tom Lane)
      <ulink url="&commit_baseurl;2b8f3f5a7">&sect;</ulink>
     </para>

     <para>
      This allows <varname>hash_mem_multiplier</varname> to be used for
      its intended purpose of preventing large hash aggregations from
      spilling to disk, even when <quote>large</quote> means multiple
      gigabytes.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [889592344] 2021-06-02 14:38:14 -0400
Branch: REL_13_STABLE [6753a5b7e] 2021-06-02 14:38:14 -0400
Branch: REL_12_STABLE [bdd096f1a] 2021-06-02 14:38:14 -0400
-->
     <para>
      Fix mis-planning of queries involving regular tables that are
      inheritance children of foreign tables (Amit Langote)
      <ulink url="&commit_baseurl;6753a5b7e">&sect;</ulink>
     </para>

     <para>
      <command>SELECT FOR UPDATE</command> and related commands would fail
      with assertion failures or <quote>could not find junk column</quote>
      errors in such cases.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d23ac62af] 2021-07-09 13:38:24 -0400
Branch: REL_14_STABLE [1d98fdaed] 2021-07-09 13:38:24 -0400
Branch: REL_13_STABLE [9807b9aed] 2021-07-09 13:38:24 -0400
-->
     <para>
      Fix pullup of constant function-in-FROM results when the FROM item
      is marked <literal>LATERAL</literal> (Tom Lane)
      <ulink url="&commit_baseurl;9807b9aed">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master Release: REL_14_BR [caba8f0d4] 2021-06-09 16:17:00 -0400
Branch: REL_13_STABLE [082656429] 2021-06-09 16:17:13 -0400
Branch: REL_12_STABLE [5d950c721] 2021-06-09 16:19:52 -0400
Branch: REL_11_STABLE [ca158c168] 2021-06-09 16:20:10 -0400
Branch: REL_10_STABLE [31bda6a22] 2021-06-09 16:20:28 -0400
Branch: REL9_6_STABLE [6eb5b9ae3] 2021-06-09 16:21:14 -0400
Branch: master Release: REL_14_BR [4dcb1d087] 2021-06-10 09:46:08 -0400
Branch: REL_13_STABLE [3465328aa] 2021-06-10 09:47:25 -0400
Branch: REL_12_STABLE [2208d71a0] 2021-06-10 09:34:39 -0400
Branch: REL_11_STABLE [534b9be80] 2021-06-10 09:43:35 -0400
Branch: REL_10_STABLE [1c2c6a9a2] 2021-06-10 09:48:07 -0400
Branch: REL9_6_STABLE [6cd0e55f9] 2021-06-10 09:51:00 -0400
Branch: REL9_6_STABLE [75212a854] 2021-06-09 16:16:21 -0400
Branch: REL_13_STABLE [99a0a2ada] 2021-06-09 12:28:39 -0400
Branch: REL_12_STABLE [6fc2febc2] 2021-06-09 12:29:00 -0400
Branch: REL_11_STABLE [38982b8b7] 2021-06-09 12:30:28 -0400
Branch: REL_10_STABLE [9778a191a] 2021-06-09 12:30:49 -0400
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master Release: REL_14_BR [c3652f976] 2021-06-12 08:43:54 -0400
Branch: REL_13_STABLE [45322bd9b] 2021-06-12 08:51:29 -0400
Branch: REL_12_STABLE [1730a3334] 2021-06-12 08:54:28 -0400
Branch: REL_11_STABLE [8b9e1275c] 2021-06-12 08:55:29 -0400
Branch: REL_10_STABLE [0cd8a55bd] 2021-06-12 08:55:39 -0400
Branch: REL9_6_STABLE [dee7ad20d] 2021-06-12 08:55:55 -0400
Branch: master Release: REL_14_BR [9d97c3408] 2021-06-13 07:19:34 -0400
Branch: REL_13_STABLE [47d5781cb] 2021-06-13 07:19:34 -0400
Branch: REL_12_STABLE [914c716ca] 2021-06-13 07:19:35 -0400
Branch: REL_11_STABLE [8cb3d95c2] 2021-06-13 07:19:36 -0400
Branch: REL_10_STABLE [319d616dd] 2021-06-13 07:19:38 -0400
Branch: REL9_6_STABLE [84cb4be71] 2021-06-13 07:19:40 -0400
Branch: master Release: REL_14_BR [54a5ed220] 2021-06-15 15:35:47 -0400
Branch: REL_13_STABLE [d906d106f] 2021-06-15 15:36:50 -0400
Branch: REL_12_STABLE [fb3d6b0e1] 2021-06-15 15:36:59 -0400
Branch: REL_11_STABLE [c0a758780] 2021-06-15 15:37:07 -0400
Branch: REL_10_STABLE [1dc53c914] 2021-06-15 15:37:15 -0400
Branch: REL9_6_STABLE [e46f6a078] 2021-06-15 15:37:24 -0400
-->
     <para>
      Fix corner-case failure of a new standby to follow a new primary
      (Dilip Kumar, Robert Haas)
      <ulink url="&commit_baseurl;082656429">&sect;</ulink>
      <ulink url="&commit_baseurl;3465328aa">&sect;</ulink>
      <ulink url="&commit_baseurl;99a0a2ada">&sect;</ulink>
      <ulink url="&commit_baseurl;45322bd9b">&sect;</ulink>
      <ulink url="&commit_baseurl;47d5781cb">&sect;</ulink>
      <ulink url="&commit_baseurl;d906d106f">&sect;</ulink>
     </para>

     <para>
      Under a narrow combination of conditions, the standby could wind up
      trying to follow the wrong WAL timeline.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [a00c138b7] 2021-07-29 01:31:41 +0900
Branch: REL_14_STABLE [f2a3d7404] 2021-07-29 01:33:33 +0900
Branch: REL_13_STABLE [a66b05b42] 2021-07-29 01:34:13 +0900
Branch: REL_12_STABLE [d7ded08e6] 2021-07-29 01:35:00 +0900
Branch: REL_11_STABLE [02ef4d1e2] 2021-07-29 01:35:05 +0900
Branch: REL_10_STABLE [25fe5b2bb] 2021-07-29 01:35:10 +0900
Branch: REL9_6_STABLE [32d182dd0] 2021-07-29 01:35:52 +0900
-->
     <para>
      Update minimum recovery point when WAL replay of a transaction abort
      record causes file truncation (Fujii Masao)
      <ulink url="&commit_baseurl;a66b05b42">&sect;</ulink>
     </para>

     <para>
      File truncation is irreversible, so it's no longer safe to stop
      recovery at a point earlier than that record.  The corresponding
      case for transaction commit was fixed years ago, but this one was
      overlooked.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [ead9e51e8] 2021-07-16 12:07:30 -0400
Branch: REL_14_STABLE [e5bcbb107] 2021-07-16 12:07:30 -0400
Branch: REL_13_STABLE [866237a6f] 2021-07-16 12:07:30 -0400
Branch: master [8589299e0] 2021-07-17 13:19:17 -0400
Branch: REL_14_STABLE [d8f3b021c] 2021-07-17 13:19:17 -0400
Branch: REL_13_STABLE [7099ba058] 2021-07-17 13:19:17 -0400
Branch: master [0d2cb6b2b] 2021-07-19 17:21:07 -0400
Branch: REL_14_STABLE [1e8751380] 2021-07-19 17:21:07 -0400
Branch: REL_13_STABLE [ce413eba4] 2021-07-19 17:21:07 -0400
Branch: master [ce197e91d] 2021-07-29 17:09:06 -0400
Branch: REL_14_STABLE [f951f6f69] 2021-07-29 17:09:06 -0400
Branch: REL_13_STABLE [41d27ee7b] 2021-07-29 17:26:25 -0400
-->
     <para>
      Advance oldest-required-WAL-segment horizon properly after a
      replication slot is invalidated (Kyotaro Horiguchi)
      <ulink url="&commit_baseurl;866237a6f">&sect;</ulink>
      <ulink url="&commit_baseurl;7099ba058">&sect;</ulink>
      <ulink url="&commit_baseurl;ce413eba4">&sect;</ulink>
      <ulink url="&commit_baseurl;41d27ee7b">&sect;</ulink>
     </para>

     <para>
      If all slots were invalidated, the horizon would not move again,
      eventually allowing the server's WAL storage to run out of space.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [50371df26] 2021-07-02 16:04:54 -0400
Branch: REL_14_STABLE [63a952167] 2021-07-02 16:05:20 -0400
Branch: REL_13_STABLE [7fc97752d] 2021-07-02 16:04:54 -0400
Branch: REL_12_STABLE [feff61557] 2021-07-02 16:04:54 -0400
Branch: REL_11_STABLE [32d50b895] 2021-07-02 16:04:54 -0400
Branch: REL_10_STABLE [0b5089e8c] 2021-07-02 16:04:54 -0400
-->
     <para>
      In walreceivers, avoid attempting catalog lookups after an error
      (Masahiko Sawada, Bharath Rupireddy)
      <ulink url="&commit_baseurl;7fc97752d">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master Release: REL_14_BR [2945a488a] 2020-11-16 18:27:51 +0900
Branch: REL_13_STABLE [8d091922f] 2021-07-25 11:15:30 +0900
Branch: REL_12_STABLE [1bcfda30f] 2021-07-25 11:16:02 +0900
Branch: REL_11_STABLE [9c83398f8] 2021-07-25 11:16:13 +0900
Branch: REL_10_STABLE [710fabfa2] 2021-07-25 11:16:26 +0900
Branch: REL9_6_STABLE [8e5be9cfe] 2021-07-25 11:16:34 +0900
-->
     <para>
      Ensure that a standby server's startup process will respond to a
      shutdown signal promptly while waiting for WAL to arrive (Fujii
      Masao, Soumyadeep Chakraborty)
      <ulink url="&commit_baseurl;8d091922f">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master Release: REL_14_BR [b786304c2] 2021-06-28 09:29:38 +0530
Branch: REL_13_STABLE [741deb260] 2021-06-28 08:42:48 +0530
Branch: REL_12_STABLE [b75c1f687] 2021-06-28 09:17:10 +0530
Branch: REL_11_STABLE [c62c3769f] 2021-06-28 09:09:42 +0530
-->
     <para>
      Correctly clear shared state after failing to become a member of a
      transaction commit group (Amit Kapila)
      <ulink url="&commit_baseurl;741deb260">&sect;</ulink>
     </para>

     <para>
      Given the right timing, this could cause an assertion failure when
      some later session re-uses the same PGPROC object.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master Release: REL_14_BR [b6d8d2073] 2021-06-24 10:45:23 +0300
Branch: REL_13_STABLE [2a0ab13f8] 2021-06-24 10:45:34 +0300
Branch: REL_12_STABLE [caac19650] 2021-06-24 10:45:43 +0300
Branch: REL_11_STABLE [c78bb32c1] 2021-06-24 10:45:46 +0300
Branch: REL_10_STABLE [a5eacd86b] 2021-06-24 10:45:49 +0300
Branch: REL9_6_STABLE [85ae8ccb2] 2021-06-24 10:45:52 +0300
Branch: master Release: REL_14_BR [9b8ed0f52] 2021-06-24 11:19:03 +0300
Branch: REL_13_STABLE [6fb377e5f] 2021-06-24 11:19:31 +0300
Branch: REL_12_STABLE [8b01a403c] 2021-06-24 11:19:34 +0300
Branch: REL_11_STABLE [eb3bd243a] 2021-06-24 11:19:37 +0300
Branch: REL_10_STABLE [fbbc48995] 2021-06-24 11:19:40 +0300
Branch: REL9_6_STABLE [5956795cb] 2021-06-24 11:19:44 +0300
-->
     <para>
      Add locking to avoid reading incorrect relmapper data in the face of
      a concurrent write from another process (Heikki Linnakangas)
      <ulink url="&commit_baseurl;2a0ab13f8">&sect;</ulink>
      <ulink url="&commit_baseurl;6fb377e5f">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master Release: REL_14_BR [5cc1cd502] 2021-06-11 19:07:32 -0400
Branch: REL_13_STABLE [065ce069a] 2021-06-11 19:07:32 -0400
Branch: REL_12_STABLE [0c7efd975] 2021-06-11 19:07:32 -0400
-->
     <para>
      Improve progress reporting for the sort phase of a parallel btree
      index build (Matthias van de Meent)
      <ulink url="&commit_baseurl;065ce069a">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [fe6a20ce5] 2021-06-12 12:59:15 -0400
Branch: REL_13_STABLE [8b5055812] 2021-06-12 12:59:15 -0400
Branch: REL_12_STABLE [1f280e833] 2021-06-12 12:59:15 -0400
Branch: REL_11_STABLE [9eecea7f3] 2021-06-12 12:59:15 -0400
Branch: REL_10_STABLE [4745c119e] 2021-06-12 12:59:15 -0400
-->
     <para>
      Improve checks for violations of replication protocol (Tom Lane)
      <ulink url="&commit_baseurl;8b5055812">&sect;</ulink>
     </para>

     <para>
      Logical replication workers frequently used Asserts to check for
      cases that could be triggered by invalid or out-of-order replication
      commands.  This seems unwise, so promote these tests to regular
      error checks.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [ab55d742e] 2021-06-11 16:12:41 -0400
Branch: REL_13_STABLE [b270713fd] 2021-06-11 16:12:36 -0400
Author: Michael Paquier <michael@paquier.xyz>
Branch: master Release: REL_14_BR [bfd96b7a3] 2021-06-12 15:29:48 +0900
Branch: REL_13_STABLE [fad9c8e93] 2021-06-12 15:30:00 +0900
-->
     <para>
      Fix assorted crash cases in logical replication of partitioned-table
      updates (Amit Langote, Tom Lane)
      <ulink url="&commit_baseurl;b270713fd">&sect;</ulink>
      <ulink url="&commit_baseurl;fad9c8e93">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [b39630fd4] 2021-05-22 21:25:29 -0400
Branch: REL_13_STABLE [5b4791b45] 2021-05-22 21:24:48 -0400
-->
     <para>
      Fix potential crash when firing AFTER triggers of partitioned tables
      in logical replication workers (Tom Lane)
      <ulink url="&commit_baseurl;5b4791b45">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master Release: REL_14_BR [6d0eb3855] 2021-05-21 07:54:27 +0530
Branch: REL_13_STABLE [c83c0257e] 2021-05-21 08:03:38 +0530
Branch: REL_12_STABLE [18c6242b7] 2021-05-21 08:17:25 +0530
Branch: REL_11_STABLE [71787b23e] 2021-05-21 08:31:10 +0530
-->
     <para>
      Fix deadlock when multiple logical replication workers try to
      truncate the same table (Peter Smith, Haiying Tang)
      <ulink url="&commit_baseurl;c83c0257e">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master Release: REL_14_BR [4daa140a2] 2021-06-15 08:28:36 +0530
Branch: REL_13_STABLE [602a32a68] 2021-06-15 08:41:16 +0530
Branch: REL_12_STABLE [40ad7ebff] 2021-06-15 08:50:12 +0530
Branch: REL_11_STABLE [1f8a934e0] 2021-06-15 09:02:32 +0530
Branch: REL_10_STABLE [35f56c124] 2021-06-15 09:10:24 +0530
Branch: REL9_6_STABLE [43acadfce] 2021-06-15 09:18:38 +0530
Branch: REL_13_STABLE [56e366f67] 2021-06-24 15:21:50 +0530
Branch: REL_12_STABLE [72b51e214] 2021-06-24 15:25:13 +0530
Branch: REL_11_STABLE [e95f617ac] 2021-06-24 15:26:37 +0530
-->
     <para>
      Fix error cases and memory leaks in logical decoding of speculative
      insertions (Dilip Kumar)
      <ulink url="&commit_baseurl;602a32a68">&sect;</ulink>
      <ulink url="&commit_baseurl;56e366f67">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master Release: REL_14_BR [eb89cb43a] 2021-06-01 14:27:14 +0530
Branch: REL_13_STABLE [d25056812] 2021-06-01 14:25:19 +0530
Branch: REL_13_STABLE [357cb8f07] 2021-06-18 08:51:18 +0530
-->
     <para>
      Fix memory leak in logical replication output (Amit Langote)
      <ulink url="&commit_baseurl;d25056812">&sect;</ulink>
      <ulink url="&commit_baseurl;357cb8f07">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Jeff Davis <jdavis@postgresql.org>
Branch: master [dd0e37cc1] 2021-07-10 10:26:38 -0700
Branch: REL_14_STABLE [10a07973c] 2021-07-10 10:27:07 -0700
Branch: REL_13_STABLE [edd9a2bf7] 2021-07-10 10:27:27 -0700
Branch: REL_12_STABLE [5b1621d2f] 2021-07-10 10:28:15 -0700
Branch: REL_11_STABLE [52c168db9] 2021-07-10 10:28:33 -0700
-->
     <para>
      Avoid leaving an invalid record-type hash table entry behind after
      an error (Sait Talha Nisanci)
      <ulink url="&commit_baseurl;edd9a2bf7">&sect;</ulink>
     </para>

     <para>
      This could lead to later crashes or memory leakage.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [131ea3e90] 2021-06-16 19:30:17 -0400
Branch: REL_13_STABLE [d03a41d1c] 2021-06-16 19:30:17 -0400
Branch: REL_12_STABLE [17d962cca] 2021-06-16 19:30:17 -0400
Branch: REL_11_STABLE [9cf163266] 2021-06-16 19:30:17 -0400
Branch: REL_10_STABLE [a6f7745a3] 2021-06-16 19:30:17 -0400
Branch: REL9_6_STABLE [c50596cdc] 2021-06-16 19:30:17 -0400
-->
     <para>
      Fix plan cache reference leaks in some error cases in
      <command>CREATE TABLE ... AS EXECUTE</command> (Tom Lane)
      <ulink url="&commit_baseurl;d03a41d1c">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master Release: REL_14_BR [b1d653890] 2021-05-29 15:12:34 +1200
Branch: REL_13_STABLE [d41fda6aa] 2021-05-29 15:13:44 +1200
Branch: REL_12_STABLE [82248f227] 2021-05-29 15:14:53 +1200
Branch: REL_11_STABLE [a15d84470] 2021-05-29 15:16:15 +1200
-->
     <para>
      Fix race condition in code for sharing tuple descriptors across
      parallel workers (Thomas Munro)
      <ulink url="&commit_baseurl;d41fda6aa">&sect;</ulink>
     </para>

     <para>
      Given the right timing, a crash could result.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master Release: REL_14_BR [96540f80f] 2021-06-11 12:16:14 -0400
Branch: REL_13_STABLE [218b10100] 2021-06-11 12:16:14 -0400
-->
     <para>
      Fix race condition when invalidating an obsolete replication slot
      concurrently with an attempt to drop or update it (Andres Freund,
      &Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;218b10100">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [30d8bad49] 2021-05-15 12:21:06 -0400
Branch: REL_13_STABLE [c3cc73e14] 2021-05-15 12:21:06 -0400
Branch: REL_12_STABLE [6bcb51968] 2021-05-15 12:21:06 -0400
Branch: REL_11_STABLE [6fcbaea7a] 2021-05-15 12:21:06 -0400
Branch: REL_10_STABLE [c76ceacbd] 2021-05-15 12:21:06 -0400
Branch: REL9_6_STABLE [5d195dc40] 2021-05-15 12:21:06 -0400
-->
     <para>
      Fix possible race condition when releasing BackgroundWorkerSlots
      (Tom Lane)
      <ulink url="&commit_baseurl;c3cc73e14">&sect;</ulink>
     </para>

     <para>
      It's likely that this doesn't fix any observable bug on Intel
      hardware, but machines with weaker memory ordering rules could
      have problems.
     </para>
    </listitem>

    <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
Branch: master [41469253e] 2021-07-13 12:40:16 +1200
Branch: REL_14_STABLE [a3b8d91cc] 2021-07-13 12:42:04 +1200
Branch: REL_13_STABLE [204f646a2] 2021-07-13 12:42:43 +1200
Branch: REL_12_STABLE [6f1c7a2d0] 2021-07-13 12:44:36 +1200
Branch: REL_11_STABLE [187e9c399] 2021-07-13 12:45:35 +1200
Branch: REL_10_STABLE [b55e478a4] 2021-07-13 12:46:12 +1200
Branch: REL9_6_STABLE [87b7a652b] 2021-07-13 12:46:52 +1200
Branch: master [5bd38d2f2] 2021-07-13 13:27:05 +1200
Branch: REL_14_STABLE [a92709fed] 2021-07-13 13:27:44 +1200
Branch: REL_13_STABLE [2fde8e49a] 2021-07-13 13:28:19 +1200
Branch: REL_12_STABLE [645c5d119] 2021-07-13 13:30:26 +1200
Branch: REL_11_STABLE [eff751ea5] 2021-07-13 13:31:00 +1200
Branch: REL_10_STABLE [d7f10f39c] 2021-07-13 13:31:29 +1200
Branch: REL9_6_STABLE [d0e44bae4] 2021-07-13 13:32:10 +1200
-->
     <para>
      Fix latent crash in sorting code (Ronan Dunklau)
      <ulink url="&commit_baseurl;204f646a2">&sect;</ulink>
      <ulink url="&commit_baseurl;2fde8e49a">&sect;</ulink>
     </para>

     <para>
      One code path could attempt to free a null pointer.  The case
      appears unreachable in the core server's use of sorting, but perhaps
      it could be triggered by extensions.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Geoghegan <pg@bowt.ie>
Branch: master Release: REL_14_BR [8f72bbac3] 2021-05-14 15:08:02 -0700
Branch: REL_13_STABLE [fa675af59] 2021-05-14 15:08:00 -0700
-->
     <para>
      Harden B-tree posting list split code against corrupt data
      (Peter Geoghegan)
      <ulink url="&commit_baseurl;fa675af59">&sect;</ulink>
     </para>

     <para>
      Throw an error, rather than crashing, for an attempt to insert an
      item with a TID identical to an existing entry.  While that
      shouldn't ever happen, it has been reported to happen when the index
      is inconsistent with its table.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [c3c35a733] 2021-05-14 15:07:34 -0400
Branch: REL_13_STABLE [dc714c120] 2021-05-14 15:07:34 -0400
Branch: REL_12_STABLE [4e046281f] 2021-05-14 15:07:34 -0400
Branch: REL_11_STABLE [d776045eb] 2021-05-14 15:07:34 -0400
Branch: REL_10_STABLE [e87a0d2e0] 2021-05-14 15:07:34 -0400
Branch: REL9_6_STABLE [5015d3c35] 2021-05-14 15:07:34 -0400
-->
     <para>
      Prevent infinite loops in SP-GiST index insertion (Tom Lane)
      <ulink url="&commit_baseurl;dc714c120">&sect;</ulink>
     </para>

     <para>
      In the event that INCLUDE columns take up enough space to prevent a
      leaf index tuple from ever fitting on a page, the text_ops operator
      class would get into an infinite loop vainly trying to make the
      tuple fit.
      While pre-v11 versions don't have INCLUDE columns, back-patch this
      anti-looping fix to them anyway, as it seems like a good defense
      against bugs in operator classes.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [eb7a6b922] 2021-05-14 13:29:39 -0400
Branch: REL_13_STABLE [c1b72bf04] 2021-05-14 13:26:55 -0400
Branch: REL_12_STABLE [004288d3c] 2021-05-14 13:26:55 -0400
Branch: REL_11_STABLE [f4ee4082f] 2021-05-14 13:26:55 -0400
Branch: REL_10_STABLE [fe64adc93] 2021-05-14 13:26:55 -0400
Branch: REL9_6_STABLE [4c6cfcc37] 2021-05-14 13:26:55 -0400
Branch: master Release: REL_14_BR [e47f93f98] 2021-05-14 13:29:39 -0400
Branch: REL_13_STABLE [63831c162] 2021-05-14 12:54:26 -0400
Branch: REL_12_STABLE [4c646b179] 2021-05-14 12:54:26 -0400
Branch: REL_11_STABLE [8274f4517] 2021-05-14 12:54:26 -0400
Branch: REL_10_STABLE [39b8ccb08] 2021-05-14 12:54:26 -0400
Branch: REL9_6_STABLE [567328989] 2021-05-14 12:54:26 -0400
-->
     <para>
      Ensure that SP-GiST index insertion can be terminated by a query
      cancel request (Tom Lane, &Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;c1b72bf04">&sect;</ulink>
      <ulink url="&commit_baseurl;63831c162">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d9809bf86] 2021-07-20 13:01:48 -0400
Branch: REL_14_STABLE [899564e01] 2021-07-20 13:01:48 -0400
Branch: REL_13_STABLE [0fce76b99] 2021-07-20 13:01:48 -0400
Branch: REL_12_STABLE [85189f54a] 2021-07-20 13:01:48 -0400
Branch: REL_11_STABLE [7321d5c3f] 2021-07-20 13:01:48 -0400
Branch: REL_10_STABLE [4eac891b1] 2021-07-20 13:01:48 -0400
Branch: REL9_6_STABLE [dffec69fe] 2021-07-20 13:01:48 -0400
-->
     <para>
      Fix uninitialized-variable bug that could
      cause <application>PL/pgSQL</application> to act as though
      an <literal>INTO</literal> clause
      specified <literal>STRICT</literal>, even though it didn't
      (Tom Lane)
      <ulink url="&commit_baseurl;0fce76b99">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [6f5d9bce5] 2021-06-28 14:17:41 -0400
Branch: REL_14_STABLE [cf1f545bf] 2021-06-28 14:17:42 -0400
Branch: REL_13_STABLE [1603deca3] 2021-06-28 14:17:42 -0400
Branch: REL_12_STABLE [240d56fc4] 2021-06-28 14:17:42 -0400
Branch: REL_11_STABLE [34c24e5a4] 2021-06-28 14:17:42 -0400
Branch: REL_10_STABLE [06a2b2fe5] 2021-06-28 14:17:42 -0400
Branch: REL9_6_STABLE [b54be47cd] 2021-06-28 14:17:42 -0400
-->
     <para>
      Don't abort the process for an out-of-memory failure in libpq's
      printing functions (Tom Lane)
      <ulink url="&commit_baseurl;1603deca3">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: John Naylor <john.naylor@postgresql.org>
Branch: master [5fcf3945b] 2021-07-30 15:39:22 -0400
Branch: REL_14_STABLE [f051b87ac] 2021-07-30 16:28:43 -0400
Branch: REL_13_STABLE [171bf1cea] 2021-07-30 16:18:59 -0400
Branch: REL_12_STABLE [d9589eb62] 2021-07-30 15:59:10 -0400
Branch: REL_11_STABLE [c7181a32c] 2021-07-30 16:12:17 -0400
Branch: REL_10_STABLE [231c19a89] 2021-07-30 16:40:42 -0400
Branch: REL9_6_STABLE [cfcb0ceab] 2021-07-30 16:34:33 -0400
Branch: REL_11_STABLE [9455e7f50] 2021-07-30 18:54:38 -0400
Branch: REL_10_STABLE [f3cd6aeb8] 2021-07-30 18:54:10 -0400
Branch: REL9_6_STABLE [fa27389c5] 2021-07-30 18:52:55 -0400
-->
     <para>
      In <application>ecpg</application>, allow the <type>numeric</type>
      value <systemitem>INT_MIN</systemitem> (usually -2147483648) to be
      converted to integer (John Naylor)
      <ulink url="&commit_baseurl;171bf1cea">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [42f94f56b] 2021-06-07 14:15:25 -0400
Branch: REL_13_STABLE [5b6436874] 2021-06-07 14:15:25 -0400
Branch: REL_12_STABLE [fc896f45d] 2021-06-07 14:15:25 -0400
Branch: REL_11_STABLE [89a5499ef] 2021-06-07 14:15:25 -0400
Branch: REL_10_STABLE [4826fe4c5] 2021-06-07 14:15:25 -0400
Branch: REL9_6_STABLE [ac600c541] 2021-06-07 14:15:25 -0400
Branch: REL_10_STABLE [0b116346b] 2021-06-07 13:12:35 -0400
Branch: REL9_6_STABLE [7cdb97632] 2021-06-07 13:12:35 -0400
-->
     <para>
      In <application>psql</application> and other client programs, avoid
      overrunning the ends of strings when dealing with invalidly-encoded
      data (Tom Lane)
      <ulink url="&commit_baseurl;5b6436874">&sect;</ulink>
     </para>

     <para>
      An incorrectly-encoded multibyte character near the end of a string
      could cause various processing loops to run past the string's
      terminating NUL, with results ranging from no detectable issue to
      a program crash, depending on what happens to be in the following
      memory.  This is reminiscent of CVE-2006-2313, although these
      particular cases do not appear to have interesting security
      consequences.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [f0e21f2f6] 2021-07-16 17:29:22 -0400
Branch: REL_14_STABLE [3c5b7c628] 2021-07-16 17:29:22 -0400
Branch: REL_13_STABLE [cc340af33] 2021-07-16 17:29:22 -0400
Branch: REL_12_STABLE [5992c94dc] 2021-07-16 17:29:22 -0400
Branch: REL_11_STABLE [ccfc3cbb3] 2021-07-16 17:29:22 -0400
-->
     <para>
      Fix <application>pg_dump</application> to correctly handle triggers
      on partitioned tables whose enabled status is different from their
      parent triggers' status
      (Justin Pryzby, &Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;cc340af33">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [f807e3410] 2021-06-13 14:32:42 -0400
Branch: REL_13_STABLE [bc7885b7f] 2021-06-13 14:32:42 -0400
Branch: REL_12_STABLE [b7c5823ac] 2021-06-13 14:32:42 -0400
Branch: REL_11_STABLE [73fa76241] 2021-06-13 14:32:42 -0400
Branch: REL_10_STABLE [05fccab6a] 2021-06-13 14:32:42 -0400
Branch: REL9_6_STABLE [dd53b46c7] 2021-06-13 14:32:42 -0400
-->
     <para>
      Avoid <quote>invalid creation date in header</quote> warnings
      observed when running <application>pg_restore</application> on an
      archive file created in a different time zone (Tom Lane)
      <ulink url="&commit_baseurl;bc7885b7f">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Bruce Momjian <bruce@momjian.us>
Branch: master [74cf7d46a] 2021-07-26 22:38:15 -0400
Branch: REL_14_STABLE [695b4a113] 2021-07-26 22:38:14 -0400
Branch: REL_13_STABLE [0a5e708e2] 2021-07-26 22:38:14 -0400
Branch: REL_12_STABLE [7626e9f2b] 2021-07-26 22:38:14 -0400
Branch: REL_11_STABLE [c4ba87f52] 2021-07-26 22:38:14 -0400
Branch: REL_10_STABLE [71121450e] 2021-07-26 22:38:14 -0400
Branch: REL9_6_STABLE [088dbf3bc] 2021-07-26 22:38:14 -0400
-->
     <para>
      Make <application>pg_upgrade</application> carry forward the old
      installation's <literal>oldestXID</literal> value (Bertrand Drouvot)
      <ulink url="&commit_baseurl;0a5e708e2">&sect;</ulink>
     </para>

     <para>
      Previously, the new installation's <literal>oldestXID</literal> was
      set to a value old enough to (usually) force immediate
      anti-wraparound autovacuuming.  That's not desirable from a
      performance standpoint; what's worse, installations using large
      values of <varname>autovacuum_freeze_max_age</varname> could suffer
      unwanted forced shutdowns soon after an upgrade.
     </para>
    </listitem>

    <listitem>
<!--
Author: Bruce Momjian <bruce@momjian.us>
Branch: master [e462856a7] 2021-08-03 11:58:15 -0400
Branch: REL_14_STABLE [4051a7775] 2021-08-03 11:58:15 -0400
Branch: REL_13_STABLE [a81c71e3a] 2021-08-03 11:58:15 -0400
Branch: REL_12_STABLE [49e319cea] 2021-08-03 11:58:15 -0400
Branch: REL_11_STABLE [3d2b6cd6f] 2021-08-03 11:58:14 -0400
Branch: REL_10_STABLE [58974a542] 2021-08-03 11:58:14 -0400
Branch: REL9_6_STABLE [5e531bb1d] 2021-08-03 11:58:14 -0400
Branch: master [9e51cc87f] 2021-08-03 12:26:08 -0400
Branch: REL_14_STABLE [3a0ba31a3] 2021-08-03 12:26:08 -0400
Branch: REL_13_STABLE [47a573d91] 2021-08-03 12:26:08 -0400
Branch: REL_12_STABLE [165506217] 2021-08-03 12:26:08 -0400
Branch: REL_11_STABLE [554a7648e] 2021-08-03 12:26:08 -0400
Branch: REL_10_STABLE [fcdc461f5] 2021-08-03 12:26:08 -0400
Branch: REL9_6_STABLE [3ab496ab8] 2021-08-03 12:26:08 -0400
-->
     <para>
      Extend <application>pg_upgrade</application> to detect and warn
      about extensions that should be upgraded (Bruce Momjian)
      <ulink url="&commit_baseurl;a81c71e3a">&sect;</ulink>
      <ulink url="&commit_baseurl;47a573d91">&sect;</ulink>
     </para>

     <para>
      A script file is now produced containing the <command>ALTER
      EXTENSION UPDATE</command> commands needed to bring extensions up to
      the versions that are considered default in the new installation.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [7fbe0c8c4] 2021-07-20 12:12:39 +0900
Branch: REL_14_STABLE [3a0d2d0cb] 2021-07-20 12:12:47 +0900
Branch: REL_13_STABLE [fb2b86015] 2021-07-20 12:12:51 +0900
Branch: REL_12_STABLE [b9a0de15e] 2021-07-20 12:12:54 +0900
Branch: REL_11_STABLE [795a9166e] 2021-07-20 12:12:57 +0900
Branch: REL_10_STABLE [11dbad74c] 2021-07-20 12:13:01 +0900
Branch: master [4ef64c425] 2021-07-26 11:13:37 +0900
Branch: REL_14_STABLE [b0d286719] 2021-07-26 11:14:08 +0900
Branch: REL_13_STABLE [2c7395aad] 2021-07-26 11:14:11 +0900
Branch: REL_12_STABLE [c4ef3b81b] 2021-07-26 11:14:14 +0900
Branch: REL_11_STABLE [9c6fa3403] 2021-07-26 11:14:17 +0900
Branch: REL_10_STABLE [4372f0685] 2021-07-26 11:14:21 +0900
-->
     <para>
      Avoid problems when
      switching <application>pg_receivewal</application> between
      compressed and non-compressed WAL storage (Michael Paquier)
      <ulink url="&commit_baseurl;fb2b86015">&sect;</ulink>
      <ulink url="&commit_baseurl;2c7395aad">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Etsuro Fujita <efujita@postgresql.org>
Branch: master [aa769f80e] 2021-08-05 20:00:00 +0900
Branch: REL_14_STABLE [588d3f597] 2021-08-05 20:00:01 +0900
Branch: REL_13_STABLE [388a81bf4] 2021-08-05 20:00:02 +0900
Branch: REL_12_STABLE [bbc0cd8fa] 2021-08-05 20:00:04 +0900
-->
     <para>
      Fix <filename>contrib/postgres_fdw</filename> to work usefully with
      generated columns (Etsuro Fujita)
      <ulink url="&commit_baseurl;388a81bf4">&sect;</ulink>
     </para>

     <para>
      <filename>postgres_fdw</filename> will now behave reasonably with
      generated columns, so long as a generated column in a foreign table
      represents a generated column in the remote table.  <command>IMPORT
      FOREIGN SCHEMA</command> will now import generated columns that way
      by default.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c7b7311f6] 2021-07-06 12:36:12 -0400
Branch: REL_14_STABLE [86d491421] 2021-07-06 12:36:12 -0400
Branch: REL_13_STABLE [bee18616a] 2021-07-06 12:36:13 -0400
Branch: REL_12_STABLE [bd2e68d0b] 2021-07-06 12:36:13 -0400
Branch: REL_11_STABLE [a9460dbf1] 2021-07-06 12:36:13 -0400
Branch: REL_10_STABLE [b23ac5aef] 2021-07-06 12:36:13 -0400
Branch: REL9_6_STABLE [67f925bbd] 2021-07-06 12:36:13 -0400
-->
     <para>
      In <filename>contrib/postgres_fdw</filename>, avoid attempting
      catalog lookups after an error (Tom Lane)
      <ulink url="&commit_baseurl;bee18616a">&sect;</ulink>
     </para>

     <para>
      While this usually worked, it's not very safe since the error might
      have been one that made catalog access nonfunctional.  A side effect
      of the fix is that messages about data conversion errors will now
      mention the query's table and column aliases (if used) rather than
      the true underlying name of a foreign table or column.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [741d7f104] 2021-06-22 21:43:12 -0400
Branch: REL_13_STABLE [e2cde85ef] 2021-06-22 21:43:12 -0400
Branch: REL_12_STABLE [f228c401b] 2021-06-22 21:43:12 -0400
Branch: REL_11_STABLE [a1417e437] 2021-06-22 21:43:12 -0400
Branch: REL_10_STABLE [1f32b789d] 2021-06-22 21:43:12 -0400
Branch: REL9_6_STABLE [13f3fd9e4] 2021-06-22 21:43:12 -0400
Branch: master Release: REL_14_BR [4a054069a] 2021-06-23 11:13:00 -0400
Branch: REL_13_STABLE [b961bdfe1] 2021-06-23 11:12:31 -0400
Branch: REL_12_STABLE [d7da3ef08] 2021-06-23 11:12:31 -0400
Branch: REL_11_STABLE [b1aa0f228] 2021-06-23 11:12:31 -0400
Branch: REL_10_STABLE [0a8929ca0] 2021-06-23 11:12:31 -0400
Branch: REL9_6_STABLE [e535a8899] 2021-06-23 11:12:32 -0400
Branch: master Release: REL_14_BR [a443c1b2d] 2021-06-23 18:41:39 -0400
Branch: REL_13_STABLE [5179a1ab7] 2021-06-23 18:41:39 -0400
Branch: REL_12_STABLE [35e6b3bbf] 2021-06-23 18:41:39 -0400
Branch: REL_11_STABLE [94d8d8d89] 2021-06-23 18:41:39 -0400
Branch: REL_10_STABLE [5cb74a803] 2021-06-23 18:41:39 -0400
Branch: REL9_6_STABLE [ad9827a90] 2021-06-23 18:41:39 -0400
Branch: REL_12_STABLE [7a48dfbb8] 2021-06-24 11:30:32 -0400
Branch: REL_11_STABLE [c6cb62f61] 2021-06-24 11:30:32 -0400
Branch: REL_10_STABLE [024e064af] 2021-06-24 11:30:32 -0400
Branch: REL9_6_STABLE [e0a7036e1] 2021-06-24 11:30:32 -0400
Author: Michael Paquier <michael@paquier.xyz>
Branch: master Release: REL_13_BR [989d23b04] 2019-08-24 11:45:05 +0900
Branch: master Release: REL_13_BR [06fdc4e4d] 2019-08-24 12:34:37 +0900
Branch: REL_12_STABLE [96f3661e4] 2021-06-17 11:57:21 +0900
Branch: REL_11_STABLE [8f3229942] 2021-06-17 11:57:26 +0900
Branch: REL_10_STABLE [feac82fa8] 2021-06-17 11:57:35 +0900
Branch: REL9_6_STABLE [484c81bf7] 2021-06-17 11:57:44 +0900
Branch: master Release: REL_13_BR [9903338b5] 2019-08-24 11:35:43 +0900
Branch: REL_12_STABLE [a8f687927] 2021-06-17 11:01:16 +0900
Branch: REL_11_STABLE [834cb7269] 2021-06-17 11:01:20 +0900
Branch: REL_10_STABLE [0ed218048] 2021-06-17 11:01:25 +0900
Branch: REL9_6_STABLE [b7cd5c5b0] 2021-06-17 11:01:32 +0900
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [642c0697c] 2021-06-27 12:45:04 -0400
Branch: REL_13_STABLE [2d0944865] 2021-06-27 12:45:04 -0400
Branch: REL_12_STABLE [bc031cf13] 2021-06-27 12:45:04 -0400
Branch: REL_11_STABLE [1acab1209] 2021-06-27 12:45:04 -0400
Branch: REL_10_STABLE [7676d9594] 2021-06-27 12:45:04 -0400
Branch: REL9_6_STABLE [de589c112] 2021-06-27 12:45:04 -0400
-->
     <para>
      Improve the isolation-test infrastructure (Tom Lane, Michael Paquier)
      <ulink url="&commit_baseurl;e2cde85ef">&sect;</ulink>
      <ulink url="&commit_baseurl;b961bdfe1">&sect;</ulink>
      <ulink url="&commit_baseurl;5179a1ab7">&sect;</ulink>
      <ulink url="&commit_baseurl;989d23b04">&sect;</ulink>
      <ulink url="&commit_baseurl;06fdc4e4d">&sect;</ulink>
      <ulink url="&commit_baseurl;9903338b5">&sect;</ulink>
      <ulink url="&commit_baseurl;2d0944865">&sect;</ulink>
     </para>

     <para>
      Allow isolation test steps to be annotated to show the expected
      completion order.  This allows getting stable results from
      otherwise-racy test cases, without the long delays that we
      previously used (not entirely successfully) to fend off race
      conditions.
      Allow non-quoted identifiers as isolation test session/step names
      (formerly, all such names had to be double-quoted).
      Detect and warn about unused steps in isolation tests.
      Improve display of query results in isolation tests.
      Remove isolationtester's <quote>dry-run</quote> mode.
      Remove memory leaks in isolationtester itself.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9753324b7] 2021-07-05 16:51:57 -0400
Branch: REL_14_STABLE [07f1e0696] 2021-07-05 16:51:57 -0400
Branch: REL_13_STABLE [2f487116e] 2021-07-05 16:51:57 -0400
Branch: REL_12_STABLE [3edc2dbc0] 2021-07-05 16:51:57 -0400
Branch: REL_11_STABLE [76c23bbb4] 2021-07-05 16:51:57 -0400
Branch: REL_10_STABLE [8c3e36fcc] 2021-07-05 16:51:57 -0400
Branch: REL9_6_STABLE [b82eabec3] 2021-07-05 16:51:57 -0400
Branch: master Release: REL_14_BR [e135743ef] 2021-05-11 20:59:58 -0400
Branch: REL_13_STABLE [834d9284b] 2021-05-11 20:59:45 -0400
-->
     <para>
      Reduce overhead of cache-clobber testing (Tom Lane)
      <ulink url="&commit_baseurl;2f487116e">&sect;</ulink>
      <ulink url="&commit_baseurl;834d9284b">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master Release: REL_14_BR [4a682d85a] 2021-06-05 07:16:34 +0200
Branch: REL_13_STABLE [3989f8fb9] 2021-06-17 09:01:22 +0200
Branch: REL_12_STABLE [9438962ce] 2021-06-17 09:02:20 +0200
Branch: REL_11_STABLE [1a2752be8] 2021-06-17 09:02:44 +0200
Branch: REL_10_STABLE [6b6fbfd7e] 2021-06-17 09:03:30 +0200
Branch: REL9_6_STABLE [9c31e4165] 2021-06-17 09:04:15 +0200
Branch: REL_12_STABLE [70293e946] 2021-06-17 16:39:13 +0200
Branch: REL_11_STABLE [ba529a6ff] 2021-06-18 06:51:56 +0200
Branch: REL_10_STABLE [91709e10a] 2021-06-18 06:52:46 +0200
Branch: REL9_6_STABLE [ec52b886d] 2021-06-18 06:52:48 +0200
-->
     <para>
      Fix <application>PL/Python</application>'s regression tests to pass
      with Python 3.10 (Honza Horak)
      <ulink url="&commit_baseurl;3989f8fb9">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [3779ac62d] 2021-07-24 13:41:17 -0400
Branch: REL_14_STABLE [89ad14cd7] 2021-07-24 13:41:17 -0400
Branch: REL_13_STABLE [c0a6f83de] 2021-07-24 13:41:17 -0400
Branch: REL_12_STABLE [4c8a14e8d] 2021-07-24 13:41:17 -0400
Branch: REL_11_STABLE [9329b9235] 2021-07-24 13:41:17 -0400
Branch: REL_10_STABLE [5a435289d] 2021-07-24 13:41:17 -0400
Branch: REL9_6_STABLE [7e09b504d] 2021-07-24 13:41:17 -0400
-->
     <para>
      Make <literal>printf("%s", NULL)</literal>
      print <literal>(null)</literal> instead of crashing (Tom Lane)
      <ulink url="&commit_baseurl;c0a6f83de">&sect;</ulink>
     </para>

     <para>
      This should improve server robustness in corner cases, and it syncs
      our <function>printf</function> implementation with common libraries.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [17707c059] 2021-06-30 11:48:53 +0900
Branch: REL_14_STABLE [607a3a43b] 2021-06-30 11:49:10 +0900
Branch: REL_13_STABLE [41edb2db1] 2021-06-30 11:49:16 +0900
Branch: REL_12_STABLE [b5ee867a7] 2021-06-30 11:49:20 +0900
Branch: REL_11_STABLE [93d3d0cf3] 2021-06-30 11:49:24 +0900
Branch: REL_10_STABLE [d8569db76] 2021-06-30 11:49:29 +0900
Branch: REL9_6_STABLE [68bad2333] 2021-06-30 11:49:36 +0900
-->
     <para>
      Fix incorrect log message when point-in-time recovery stops at
      a <command>ROLLBACK PREPARED</command> record (Simon Riggs)
      <ulink url="&commit_baseurl;41edb2db1">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: REL_14_STABLE [0c83eb2e0] 2021-07-14 17:15:01 +0900
Branch: REL_13_STABLE [522624345] 2021-07-14 17:15:18 +0900
Branch: REL_12_STABLE [b242e1d23] 2021-07-14 17:15:26 +0900
Branch: REL_11_STABLE [85a8c3a4b] 2021-07-14 17:15:31 +0900
-->
     <para>
      Improve <command>ALTER TABLE</command>'s messages for
      wrong-relation-kind errors (Kyotaro Horiguchi)
      <ulink url="&commit_baseurl;522624345">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [0e1275fb0] 2021-07-28 01:20:16 +0900
Branch: REL_14_STABLE [fd90f6ba7] 2021-07-28 01:21:35 +0900
Branch: REL_13_STABLE [92913fc29] 2021-07-28 01:21:52 +0900
Branch: REL_12_STABLE [de87c481f] 2021-07-28 01:24:24 +0900
Branch: REL_11_STABLE [42e6b5ccb] 2021-07-28 01:24:51 +0900
Branch: REL_10_STABLE [a84f95ffd] 2021-07-28 01:25:53 +0900
Branch: REL9_6_STABLE [78c21d79d] 2021-07-28 01:26:15 +0900
-->
     <para>
      Clarify error messages referring to <quote>non-negative</quote>
      values (Bharath Rupireddy)
      <ulink url="&commit_baseurl;92913fc29">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d0a02bdb8] 2021-07-09 12:38:55 -0400
Branch: REL_14_STABLE [5620ec833] 2021-07-09 12:38:55 -0400
Branch: REL_13_STABLE [55cccdfdf] 2021-07-09 12:38:55 -0400
Branch: REL_12_STABLE [a5377e7f7] 2021-07-09 12:38:55 -0400
Branch: REL_11_STABLE [b69e8ad6c] 2021-07-09 12:38:55 -0400
Branch: REL_10_STABLE [7e0b53ad6] 2021-07-09 12:38:55 -0400
Branch: REL9_6_STABLE [cd5d3aefa] 2021-07-09 12:38:55 -0400
Branch: master [31e8cfac5] 2021-07-09 14:15:41 -0400
Branch: REL_14_STABLE [7f2eca6f9] 2021-07-09 14:15:41 -0400
Branch: REL_13_STABLE [cbcf5ffb1] 2021-07-09 14:15:41 -0400
Branch: REL_12_STABLE [83a8bf24e] 2021-07-09 14:15:41 -0400
Branch: REL_11_STABLE [29a4fbd46] 2021-07-09 14:15:41 -0400
Branch: REL_10_STABLE [911488b42] 2021-07-09 14:15:41 -0400
Branch: REL9_6_STABLE [8c9c20899] 2021-07-09 14:15:41 -0400
Branch: master [53c38a086] 2021-07-09 16:59:07 -0400
Branch: REL_14_STABLE [9ffad7ae7] 2021-07-09 16:59:07 -0400
Branch: REL_13_STABLE [32d0bdbfc] 2021-07-09 16:59:07 -0400
Branch: REL_12_STABLE [e82cde74d] 2021-07-09 16:59:08 -0400
Branch: REL_11_STABLE [2c28c689f] 2021-07-09 16:59:08 -0400
Branch: REL_10_STABLE [56533fce7] 2021-07-09 16:59:08 -0400
Branch: REL9_6_STABLE [3c612d9f6] 2021-07-09 16:59:08 -0400
Branch: master [9f6be2e79] 2021-07-10 13:19:30 -0400
Branch: REL_14_STABLE [ebc346e5b] 2021-07-10 13:19:31 -0400
Branch: REL_13_STABLE [9fca23c1d] 2021-07-10 13:19:31 -0400
Branch: REL_12_STABLE [03fc042eb] 2021-07-10 13:19:31 -0400
Branch: REL_11_STABLE [946f62f2f] 2021-07-10 13:19:31 -0400
-->
     <para>
      Fix <application>configure</application> to work with OpenLDAP 2.5,
      which no longer has a separate <filename>libldap_r</filename>
      library (Adrian Ho, Tom Lane)
      <ulink url="&commit_baseurl;55cccdfdf">&sect;</ulink>
      <ulink url="&commit_baseurl;cbcf5ffb1">&sect;</ulink>
      <ulink url="&commit_baseurl;32d0bdbfc">&sect;</ulink>
      <ulink url="&commit_baseurl;9fca23c1d">&sect;</ulink>
     </para>

     <para>
      If there is no <filename>libldap_r</filename> library, we now
      silently assume that <filename>libldap</filename> is thread-safe.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master [b8c4261e5] 2021-07-01 15:12:21 -0400
Branch: REL_14_STABLE [100e9ae53] 2021-07-01 15:15:09 -0400
Branch: REL_13_STABLE [bd0be7f7a] 2021-07-01 14:31:10 -0400
Branch: REL_12_STABLE [c71471c96] 2021-07-01 14:51:54 -0400
Branch: REL_11_STABLE [a7e3a390e] 2021-07-01 14:52:40 -0400
Branch: REL_10_STABLE [b796435be] 2021-07-01 15:07:20 -0400
Branch: REL9_6_STABLE [cbd5d7c85] 2021-07-01 15:11:53 -0400
Branch: master [7355c241e] 2021-07-01 15:47:46 -0400
Branch: REL_14_STABLE [1da2ea0cc] 2021-07-01 15:47:47 -0400
Branch: REL_13_STABLE [8d2be1402] 2021-07-01 15:40:42 -0400
Branch: REL_12_STABLE [383c29d1e] 2021-07-01 15:43:31 -0400
Branch: REL_11_STABLE [418041748] 2021-07-01 15:43:53 -0400
Branch: REL_10_STABLE [177531ee0] 2021-07-01 15:44:06 -0400
Branch: REL9_6_STABLE [1f7ea06d7] 2021-07-01 15:44:22 -0400
-->
     <para>
      Add new make targets <literal>world-bin</literal>
      and <literal>install-world-bin</literal> (Andrew Dunstan)
      <ulink url="&commit_baseurl;bd0be7f7a">&sect;</ulink>
      <ulink url="&commit_baseurl;8d2be1402">&sect;</ulink>
     </para>

     <para>
      These are the same as <literal>world</literal>
      and <literal>install-world</literal> respectively, except that they
      do not build or install the documentation.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master [a0fc81326] 2021-07-01 09:02:46 -0400
Branch: REL_14_STABLE [c4774ce33] 2021-07-01 08:46:21 -0400
Branch: REL_13_STABLE [a8b564b0c] 2021-07-01 08:46:38 -0400
Branch: REL_12_STABLE [a40f8ea0f] 2021-07-01 08:47:04 -0400
Branch: REL_11_STABLE [58ac8300b] 2021-07-01 08:47:21 -0400
Branch: REL_10_STABLE [16ed3ddbb] 2021-07-01 08:48:24 -0400
Branch: REL9_6_STABLE [d173a4699] 2021-07-01 09:01:36 -0400
-->
     <para>
      Fix make rule for TAP tests (<literal>prove_installcheck</literal>)
      to work in PGXS usage (Andrew Dunstan)
      <ulink url="&commit_baseurl;a8b564b0c">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master Release: REL_14_BR [9b4e4cfe6] 2021-06-25 11:28:20 +1200
Branch: REL_13_STABLE [d9c05a9ec] 2021-06-25 11:29:00 +1200
Branch: REL_12_STABLE [47d22649e] 2021-06-25 11:29:20 +1200
Branch: REL_11_STABLE [6ada4fd06] 2021-06-25 11:29:47 +1200
-->
     <para>
      Adjust JIT code to prepare for forthcoming LLVM API change
      (Thomas Munro, Andres Freund)
      <ulink url="&commit_baseurl;d9c05a9ec">&sect;</ulink>
     </para>

     <para>
      LLVM 13 has made an incompatible API change that will cause crashing
      of our previous JIT compiler.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master Release: REL_14_BR [126cdaf47] 2021-06-23 14:01:32 -0400
Branch: REL_13_STABLE [13f365568] 2021-06-23 14:01:32 -0400
Branch: REL_12_STABLE [7eaf65451] 2021-06-23 14:01:32 -0400
Branch: REL_11_STABLE [361acef7e] 2021-06-23 14:01:32 -0400
Branch: REL_10_STABLE [d3a845d1f] 2021-06-23 14:01:32 -0400
Branch: REL9_6_STABLE [006a829b2] 2021-06-23 14:01:33 -0400
-->
     <para>
      Avoid assuming that strings returned by GSSAPI libraries are
      null-terminated (Tom Lane)
      <ulink url="&commit_baseurl;13f365568">&sect;</ulink>
     </para>

     <para>
      The GSSAPI spec provides for a string pointer and length.  It seems
      that in practice the next byte after the string is usually zero,
      so that our previous coding didn't actually fail; but we do have
      a report of AddressSanitizer complaints.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master Release: REL_14_BR [025110663] 2021-05-27 20:11:00 +0900
Branch: REL_13_STABLE [ab81d004e] 2021-05-27 20:11:21 +0900
Branch: REL_12_STABLE [a75268f1c] 2021-05-27 20:11:24 +0900
Branch: REL_11_STABLE [cf2e09544] 2021-05-27 20:11:29 +0900
Branch: REL_10_STABLE [8f507dbc6] 2021-05-27 20:11:33 +0900
Branch: REL9_6_STABLE [7a4f2e158] 2021-05-27 20:11:38 +0900
Branch: master Release: REL_14_BR [7ca37fb04] 2020-12-30 12:56:06 -0500
Branch: REL_13_STABLE [e2f21ff60] 2021-06-01 09:27:25 +0900
Branch: REL_12_STABLE [02037af3f] 2021-06-01 09:27:31 +0900
Branch: REL_13_STABLE [949e32ee5] 2021-06-08 13:40:03 +0900
Branch: REL_12_STABLE [b7684bd10] 2021-06-08 13:40:10 +0900
-->
     <para>
      Enable building with GSSAPI on MSVC (Michael Paquier)
      <ulink url="&commit_baseurl;ab81d004e">&sect;</ulink>
      <ulink url="&commit_baseurl;e2f21ff60">&sect;</ulink>
      <ulink url="&commit_baseurl;949e32ee5">&sect;</ulink>
     </para>

     <para>
      Fix various incompatibilities with modern Kerberos builds.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master Release: REL_14_BR [fb424ae85] 2021-05-28 09:30:16 -0400
Branch: REL_13_STABLE [c828a7246] 2021-05-28 09:31:50 -0400
Branch: REL_12_STABLE [ae3ef8569] 2021-05-28 09:32:09 -0400
Branch: REL_11_STABLE [3f70d7e44] 2021-05-28 09:32:24 -0400
Branch: REL_10_STABLE [a8c1062a1] 2021-05-28 09:32:31 -0400
Branch: REL9_6_STABLE [abbd70022] 2021-05-28 09:32:46 -0400
Branch: master Release: REL_14_BR [d69fcb9ca] 2021-05-28 09:35:11 -0400
Branch: REL_13_STABLE [bb18bc224] 2021-05-28 09:36:42 -0400
Branch: REL_12_STABLE [40a05cf24] 2021-05-28 09:35:42 -0400
Branch: REL_11_STABLE [a44a2b9ac] 2021-05-28 09:35:49 -0400
Branch: REL_10_STABLE [d5d89629c] 2021-05-28 09:35:55 -0400
Branch: REL9_6_STABLE [34a65fc63] 2021-05-28 09:36:10 -0400
-->
     <para>
      In MSVC builds, include <option>--with-pgport</option> in the set of
      configure options reported by <application>pg_config</application>,
      if it had been specified (Andrew Dunstan)
      <ulink url="&commit_baseurl;c828a7246">&sect;</ulink>
      <ulink url="&commit_baseurl;bb18bc224">&sect;</ulink>
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-3">
  <title>Release 13.3</title>

  <formalpara>
  <title>Release date:</title>
  <para>2021-05-13</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.2.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.3</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, if you are upgrading from a version earlier than 13.2,
    see <xref linkend="release-13-2"/>.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [f02b9085a] 2021-05-10 10:44:38 -0400
Branch: REL_13_STABLE [467395bfd] 2021-05-10 10:44:38 -0400
Branch: REL_12_STABLE [3b0f6a7ae] 2021-05-10 10:44:38 -0400
Branch: REL_11_STABLE [06bfbe854] 2021-05-10 10:44:38 -0400
Branch: REL_10_STABLE [2fb809d3e] 2021-05-10 10:44:38 -0400
Branch: REL9_6_STABLE [0c1caa48d] 2021-05-10 10:44:38 -0400
-->
     <para>
      Prevent integer overflows in array subscripting calculations
      (Tom Lane)
      <ulink url="&commit_baseurl;467395bfd">&sect;</ulink>
     </para>

     <para>
      The array code previously did not complain about cases where an
      array's lower bound plus length overflows an integer.  This resulted
      in later entries in the array becoming inaccessible (since their
      subscripts could not be written as integers), but more importantly
      it confused subsequent assignment operations.  This could lead to
      memory overwrites, with ensuing crashes or unwanted data
      modifications.
      (CVE-2021-32027)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [049e1e2ed] 2021-05-10 11:02:29 -0400
Branch: REL_13_STABLE [4a8656a7e] 2021-05-10 11:02:29 -0400
Branch: REL_12_STABLE [a5fa3e067] 2021-05-10 11:02:29 -0400
Branch: REL_11_STABLE [b7d1f32ff] 2021-05-10 11:02:29 -0400
Branch: REL_10_STABLE [52a441362] 2021-05-10 11:02:30 -0400
Branch: REL9_6_STABLE [0fcb8e2e0] 2021-05-10 11:02:30 -0400
-->
     <para>
      Fix mishandling of <quote>junk</quote> columns in <literal>INSERT
      ... ON CONFLICT ... UPDATE</literal> target lists (Tom Lane)
      <ulink url="&commit_baseurl;4a8656a7e">&sect;</ulink>
     </para>

     <para>
      If the <literal>UPDATE</literal> list contains any multi-column
      sub-selects (which give rise to junk columns in addition to the
      results proper), the <literal>UPDATE</literal> path would end up
      storing tuples that include the values of the extra junk columns.
      That's fairly harmless in the short run, but if new columns are
      added to the table then the values would become accessible, possibly
      leading to malfunctions if they don't match the datatypes of the
      added columns.
     </para>

     <para>
      In addition, in versions supporting cross-partition updates,
      a cross-partition update triggered by such a case had the reverse
      problem: the junk columns were removed from the target list,
      typically causing an immediate crash due to malfunction of the
      multi-column sub-select mechanism.
      (CVE-2021-32028)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL_13_STABLE [a71cfc56b] 2021-04-22 11:46:41 -0400
Branch: REL_12_STABLE [3fb93103a] 2021-04-22 11:46:41 -0400
Branch: REL_11_STABLE [27835b547] 2021-04-22 11:46:41 -0400
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d479d0028] 2021-04-22 17:30:55 -0400
Branch: REL_13_STABLE [2602ee468] 2021-04-22 17:30:42 -0400
Branch: REL_12_STABLE [05ce4bf8b] 2021-04-22 17:30:42 -0400
-->
     <para>
      Fix possibly-incorrect computation of <command>UPDATE
      ... RETURNING</command> outputs for joined cross-partition updates
      (Amit Langote, Etsuro Fujita)
      <ulink url="&commit_baseurl;a71cfc56b">&sect;</ulink>
      <ulink url="&commit_baseurl;2602ee468">&sect;</ulink>
     </para>

     <para>
      If an <command>UPDATE</command> for a partitioned table caused a row
      to be moved to another partition with a physically different row
      type (for example, one with a different set of dropped columns),
      computation of <literal>RETURNING</literal> results for that row
      could produce errors or wrong answers.  No error is observed unless
      the <command>UPDATE</command> involves other tables being joined to
      the target table.
      (CVE-2021-32029)
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [6f70d7ca1] 2021-05-05 12:21:50 -0400
Branch: REL_13_STABLE [923c13520] 2021-05-05 12:14:21 -0400
Branch: REL_12_STABLE [abce26c9e] 2021-05-05 12:14:21 -0400
Branch: REL_11_STABLE [a25b98d2c] 2021-05-05 12:14:21 -0400
-->
     <para>
      Fix adjustment of constraint deferrability properties in
      partitioned tables (&Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;923c13520">&sect;</ulink>
     </para>

     <para>
      When applied to a foreign-key constraint of a partitioned table,
      <command>ALTER TABLE ... ALTER CONSTRAINT</command> failed to
      adjust the <literal>DEFERRABLE</literal> and/or
      <literal>INITIALLY DEFERRED</literal> markings of the constraints
      and triggers of leaf partitions.  This led to unexpected behavior of
      such constraints.  After updating to this version, any misbehaving
      partitioned tables can be fixed by executing a
      new <command>ALTER</command> command to set the desired properties.
     </para>

     <para>
      This change also disallows applying such an <command>ALTER</command>
      directly to the constraints of leaf partitions.  The only supported
      case is for the whole partitioning hierarchy to have identical
      constraint properties, so such <command>ALTER</command>s must be
      applied at the partition root.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [a970edbed] 2021-05-04 12:09:08 +0200
Branch: REL_13_STABLE [64190d65f] 2021-05-04 12:10:22 +0200
Branch: REL_12_STABLE [13ff139a2] 2021-05-04 12:10:51 +0200
-->
     <para>
      When attaching a child table with <command>ALTER TABLE
      ... INHERIT</command>, insist that any generated columns in the
      parent be generated the same way in the child (Peter Eisentraut)
      <ulink url="&commit_baseurl;64190d65f">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [f52c5d674] 2021-03-12 11:08:42 -0500
Branch: REL_13_STABLE [8a2297776] 2021-03-12 11:08:42 -0500
Branch: REL_12_STABLE [e7f7950f6] 2021-03-12 11:08:42 -0500
Branch: REL_11_STABLE [6c34f186c] 2021-03-12 11:08:42 -0500
Branch: REL_10_STABLE [e5794cd59] 2021-03-12 11:08:42 -0500
-->
     <para>
      Forbid marking an identity column as nullable (Vik Fearing)
      <ulink url="&commit_baseurl;8a2297776">&sect;</ulink>
     </para>

     <para>
      <literal>GENERATED ... AS IDENTITY</literal> implies <literal>NOT
      NULL</literal>, so don't allow it to be combined with an
      explicit <literal>NULL</literal> specification.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [69d5ca484] 2021-04-13 15:10:18 -0400
Branch: REL_13_STABLE [c39aa1e87] 2021-04-13 15:10:18 -0400
Branch: REL_12_STABLE [a7fcb6285] 2021-04-13 15:10:18 -0400
Branch: REL_11_STABLE [c7f0275fb] 2021-04-13 15:10:18 -0400
Branch: REL_10_STABLE [46b6635b7] 2021-04-13 15:10:18 -0400
Branch: REL9_6_STABLE [041f4efd2] 2021-04-13 15:10:18 -0400
-->
     <para>
      Allow <literal>ALTER ROLE/DATABASE ... SET</literal> to set
      the <varname>role</varname>, <varname>session_authorization</varname>,
      and <varname>temp_buffers</varname> parameters (Tom Lane)
      <ulink url="&commit_baseurl;c39aa1e87">&sect;</ulink>
     </para>

     <para>
      Previously, over-eager validity checks might reject these commands,
      even if the values would have worked when used later.  This created
      a command ordering hazard for dump/reload and upgrade scenarios.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [bd1208098] 2021-02-10 13:06:48 +0900
Branch: REL_13_STABLE [849383138] 2021-02-10 13:09:09 +0900
Branch: REL_12_STABLE [85edb1f26] 2021-02-10 13:09:12 +0900
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [4f4726005] 2021-02-10 16:59:04 +0900
Branch: REL_13_STABLE [c6cd20d91] 2021-02-10 16:59:33 +0900
Branch: REL_12_STABLE [5b2945ec0] 2021-02-10 16:59:43 +0900
-->
     <para>
      Ensure that <command>REINDEX CONCURRENTLY</command> preserves any
      statistics target that's been set for the index (Michael Paquier)
      <ulink url="&commit_baseurl;849383138">&sect;</ulink>
      <ulink url="&commit_baseurl;c6cd20d91">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [8a55cb5ba] 2021-02-19 21:57:52 +0900
Branch: REL_13_STABLE [422012c98] 2021-02-19 21:58:43 +0900
Branch: REL_12_STABLE [fadcc4e81] 2021-02-19 21:59:26 +0900
-->
     <para>
      Fix <command>COMMIT AND CHAIN</command> to work correctly when the
      current transaction has live savepoints (Fujii Masao)
      <ulink url="&commit_baseurl;422012c98">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [80ca8464f] 2021-02-25 20:47:32 -0500
Branch: REL_13_STABLE [49076fd3b] 2021-02-25 20:47:32 -0500
-->
     <para>
      Fix list-manipulation bug in <literal>WITH RECURSIVE</literal>
      processing (Michael Paquier, Tom Lane)
      <ulink url="&commit_baseurl;49076fd3b">&sect;</ulink>
     </para>

     <para>
      Sufficiently deep nesting of <literal>WITH</literal> constructs
      (at least seven levels) triggered core dumps or incorrect complaints
      of faulty <literal>WITH</literal> nesting.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c402b02b9] 2021-04-12 14:37:49 -0400
Branch: REL_13_STABLE [8a7bd1e6c] 2021-04-12 14:37:22 -0400
Branch: REL_12_STABLE [27011bcff] 2021-04-12 14:37:22 -0400
Branch: REL_11_STABLE [fb2cca828] 2021-04-12 14:37:22 -0400
Branch: REL_10_STABLE [4b0aecee8] 2021-04-12 14:37:22 -0400
Branch: REL9_6_STABLE [a6158a4d9] 2021-04-12 14:37:22 -0400
-->
     <para>
      Fix bug with coercing the result of a <literal>COLLATE</literal>
      expression to a non-collatable type (Tom Lane)
      <ulink url="&commit_baseurl;8a7bd1e6c">&sect;</ulink>
     </para>

     <para>
      This led to a parse tree in which the <literal>COLLATE</literal>
      appears to be applied to a non-collatable value.  While that
      normally has no real impact (since <literal>COLLATE</literal> has no
      effect at runtime), it was possible to construct views that would be
      rejected during dump/reload.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [25936fd46] 2021-02-27 18:09:15 -0300
Branch: REL_13_STABLE [2688852a4] 2021-02-27 18:09:15 -0300
Branch: REL_12_STABLE [262eb990c] 2021-02-27 18:09:15 -0300
-->
     <para>
      Fix use-after-free bug in saving tuples for <literal>AFTER</literal>
      triggers (Amit Langote)
      <ulink url="&commit_baseurl;2688852a4">&sect;</ulink>
     </para>

     <para>
      This could cause crashes in some situations.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [2efcd502e] 2021-04-30 14:10:26 -0400
Branch: REL_13_STABLE [4d225ba0e] 2021-04-30 14:10:26 -0400
Branch: REL_12_STABLE [89768ee69] 2021-04-30 14:10:26 -0400
Branch: REL_11_STABLE [ebc2ff076] 2021-04-30 14:10:26 -0400
Branch: REL_10_STABLE [0627f3630] 2021-04-30 14:10:26 -0400
Branch: REL9_6_STABLE [73bad52a9] 2021-04-30 14:10:26 -0400
-->
     <para>
      Disallow calling window functions and procedures via
      the <quote>fast path</quote> wire protocol message (Tom Lane)
      <ulink url="&commit_baseurl;4d225ba0e">&sect;</ulink>
     </para>

     <para>
      Only plain functions are supported here.  While trying to call
      an aggregate function failed already, calling a window function
      would crash, and calling a procedure would work only if the
      procedure did no transaction control.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [f7aab36d6] 2021-04-28 11:17:58 +0900
Branch: REL_13_STABLE [f3c453787] 2021-04-28 11:18:17 +0900
Branch: REL_12_STABLE [7e76cb1d8] 2021-04-28 11:18:20 +0900
Branch: REL_11_STABLE [5b717e13c] 2021-04-28 11:18:24 +0900
Branch: REL_10_STABLE [90c9bad30] 2021-04-28 11:18:28 +0900
Branch: REL9_6_STABLE [6e41ff056] 2021-04-28 11:18:33 +0900
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [f93f0b5b2] 2021-04-28 11:58:08 +0900
Branch: REL_13_STABLE [a928297bc] 2021-04-28 11:58:43 +0900
Branch: REL_12_STABLE [85a3e0be1] 2021-04-28 11:58:46 +0900
Branch: REL_11_STABLE [669f73666] 2021-04-28 11:58:50 +0900
Branch: REL_10_STABLE [b797918d2] 2021-04-28 11:58:55 +0900
Branch: REL9_6_STABLE [0d05a3a1d] 2021-04-28 11:59:00 +0900
-->
     <para>
      Extend <function>pg_identify_object_as_address()</function>
      to support event triggers (Joel Jacobson)
      <ulink url="&commit_baseurl;f3c453787">&sect;</ulink>
      <ulink url="&commit_baseurl;a928297bc">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [7a3972597] 2021-04-12 11:30:50 +0900
Branch: REL_13_STABLE [be79debd9] 2021-04-12 11:31:26 +0900
Branch: REL_12_STABLE [82dd5706e] 2021-04-12 11:31:30 +0900
Branch: REL_11_STABLE [5656f2c3d] 2021-04-12 11:31:35 +0900
Branch: REL_10_STABLE [1cc110f68] 2021-04-12 11:31:40 +0900
Branch: REL9_6_STABLE [6540322fa] 2021-04-12 11:31:46 +0900
-->
     <para>
      Fix <function>to_char()</function>'s handling of Roman-numeral month
      format codes with negative intervals (Julien Rouhaud)
      <ulink url="&commit_baseurl;be79debd9">&sect;</ulink>
     </para>

     <para>
      Previously, such cases would usually cause a crash.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [5c06abb9b] 2021-03-08 18:21:51 -0500
Branch: REL_13_STABLE [fe2b5386b] 2021-03-08 18:21:51 -0500
Branch: REL_12_STABLE [8fff8a874] 2021-03-08 18:21:51 -0500
Branch: REL_11_STABLE [ea42ccbce] 2021-03-08 18:21:51 -0500
Branch: REL_10_STABLE [37228ecde] 2021-03-08 18:21:51 -0500
-->
     <para>
      Check that the argument
      of <function>pg_import_system_collations()</function> is a valid
      schema OID (Tom Lane)
      <ulink url="&commit_baseurl;fe2b5386b">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [b5a66e735] 2021-02-18 22:38:55 -0500
Branch: REL_13_STABLE [bf9d3a5f8] 2021-02-18 22:38:55 -0500
Branch: REL_12_STABLE [e7cddb5f2] 2021-02-18 22:38:55 -0500
Branch: REL_11_STABLE [6e6fecf49] 2021-02-18 22:38:55 -0500
Branch: REL_10_STABLE [b06450979] 2021-02-18 22:38:55 -0500
Branch: REL9_6_STABLE [ab208421e] 2021-02-18 22:38:55 -0500
-->
     <para>
      Fix use of uninitialized value while parsing an
      <literal>\{<replaceable>m</replaceable>,<replaceable>n</replaceable>\}</literal>
      quantifier in a BRE-mode regular expression (Tom Lane)
      <ulink url="&commit_baseurl;bf9d3a5f8">&sect;</ulink>
     </para>

     <para>
      This error could cause the quantifier to act non-greedy, that is
      behave like an
      <literal>{<replaceable>m</replaceable>,<replaceable>n</replaceable>}?</literal>
      quantifier would do in full regular expressions.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [375398244] 2021-04-20 11:32:02 -0400
Branch: REL_13_STABLE [7bfba4f19] 2021-04-20 11:32:02 -0400
-->
     <para>
      Fix <quote>could not find pathkey item to sort</quote> planner
      errors in some situations where the sort key involves an aggregate
      or window function (James Coleman, Tom Lane)
      <ulink url="&commit_baseurl;7bfba4f19">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [33e52ad9a] 2021-03-26 22:34:58 +0100
Branch: REL_13_STABLE [67251c82a] 2021-03-26 22:37:45 +0100
Branch: REL_12_STABLE [88acb0135] 2021-03-26 22:40:00 +0100
Branch: REL_11_STABLE [2a307df1b] 2021-03-26 22:44:01 +0100
Branch: REL_10_STABLE [e5eb40eed] 2021-03-26 22:46:15 +0100
-->
     <para>
      Don't ignore system columns when estimating the number of groups
      using extended statistics (Tomas Vondra)
      <ulink url="&commit_baseurl;67251c82a">&sect;</ulink>
     </para>

     <para>
      This led to strange estimates for queries such as <literal>SELECT
      ... GROUP BY a, b, ctid</literal>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ae4867ec7] 2021-02-12 16:26:47 -0500
Branch: REL_13_STABLE [3a02d68a9] 2021-02-12 16:26:47 -0500
Branch: REL_12_STABLE [0347470b3] 2021-02-12 16:26:47 -0500
Branch: REL_11_STABLE [a28df6fa3] 2021-02-12 16:26:47 -0500
Branch: REL_10_STABLE [374f1cefe] 2021-02-12 16:26:47 -0500
Branch: REL9_6_STABLE [f4d781dae] 2021-02-12 16:26:47 -0500
-->
     <para>
      Avoid divide-by-zero when estimating selectivity of a regular
      expression with a very long fixed prefix (Tom Lane)
      <ulink url="&commit_baseurl;3a02d68a9">&sect;</ulink>
     </para>

     <para>
      This typically led to a <literal>NaN</literal> selectivity value,
      causing assertion failures or strange planner behavior.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [23607a815] 2021-04-07 15:58:36 +0200
Branch: REL_13_STABLE [1aad1d181] 2021-04-07 15:59:30 +0200
Branch: REL_12_STABLE [847612fda] 2021-04-07 16:01:27 +0200
Branch: REL_11_STABLE [7d3a53461] 2021-04-07 16:02:51 +0200
Branch: REL_10_STABLE [e4f251be7] 2021-04-07 16:04:05 +0200
Branch: REL9_6_STABLE [df97ee6ea] 2021-04-07 16:05:21 +0200
-->
     <para>
      Fix access-off-the-end-of-the-table error in BRIN index bitmap scans
      (Tomas Vondra)
      <ulink url="&commit_baseurl;1aad1d181">&sect;</ulink>
     </para>

     <para>
      If the page range size used by a BRIN index isn't a power of two,
      there were corner cases in which a bitmap scan could try to fetch
      pages past the actual end of the table, leading to <quote>could not
      open file</quote> errors.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [38bb3aef3] 2021-02-16 12:07:14 -0500
Branch: REL_13_STABLE [0d779d22a] 2021-02-16 12:07:14 -0500
-->
     <para>
      Fix potentially wrong answers from GIN <type>tsvector</type> index
      searches, when there are many matching tuples (Tom Lane)
      <ulink url="&commit_baseurl;0d779d22a">&sect;</ulink>
     </para>

     <para>
      If the number of index matches became large enough to make the
      bitmap holding them become lossy (a threshold that depends
      on <varname>work_mem</varname>), the code could get confused about
      whether rechecks are required, allowing rows to be returned that
      don't actually match the query.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [909b449e0] 2021-03-22 14:02:26 +0900
Branch: REL_13_STABLE [78c24e97d] 2021-03-22 14:02:36 +0900
-->
     <para>
      Fix concurrency issues with WAL segment recycling on Windows
      (Michael Paquier)
      <ulink url="&commit_baseurl;78c24e97d">&sect;</ulink>
     </para>

     <para>
      This reverts a change that caused intermittent <quote>could not
      rename file ...: Permission denied</quote> log messages.  While
      there were not serious consequences, the log spam was annoying.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [595b9cba2] 2021-03-22 08:30:53 +0900
Branch: REL_13_STABLE [6e5ce888a] 2021-03-22 08:31:01 +0900
Branch: REL_12_STABLE [4b1dd9b1e] 2021-03-22 08:31:05 +0900
Branch: REL_11_STABLE [f1d550f18] 2021-03-22 08:31:09 +0900
Branch: REL_10_STABLE [1ec7162a8] 2021-03-22 08:31:14 +0900
-->
     <para>
      Avoid incorrect timeline change while recovering uncommitted
      two-phase transactions from WAL (Soumyadeep Chakraborty, Jimmy Yih,
      Kevin Yeap)
      <ulink url="&commit_baseurl;6e5ce888a">&sect;</ulink>
     </para>

     <para>
      This error could lead to subsequent WAL records being written under
      the wrong timeline ID, leading to consistency problems, or even
      complete failure to be able to restart the server, later on.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [ad8b67492] 2021-04-06 02:25:37 +0900
Branch: REL_13_STABLE [e7bcfd717] 2021-04-06 02:27:11 +0900
Branch: REL_12_STABLE [dd5b7e486] 2021-04-06 02:27:22 +0900
Branch: REL_11_STABLE [b59d3abaf] 2021-04-06 02:27:30 +0900
Branch: REL_10_STABLE [b9cf9d7d3] 2021-04-06 02:27:39 +0900
Branch: REL9_6_STABLE [e3bf96216] 2021-04-06 02:27:48 +0900
-->
     <para>
      Ensure that locks are released while shutting down a standby
      server's startup process (Fujii Masao)
      <ulink url="&commit_baseurl;e7bcfd717">&sect;</ulink>
     </para>

     <para>
      When a standby server is shut down while still in recovery, some
      locks might be left held.  This causes assertion failures in debug
      builds; it's unclear whether any serious consequence could occur
      in production builds.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [4e8c0f1a0] 2021-05-07 11:46:37 -0400
Branch: REL_13_STABLE [ef70b6f8e] 2021-05-07 11:46:37 -0400
Branch: REL_12_STABLE [cfebc7080] 2021-05-07 11:46:37 -0400
Branch: REL_11_STABLE [b40865ebd] 2021-05-07 11:46:37 -0400
Branch: REL_10_STABLE [1803c7626] 2021-05-07 11:46:37 -0400
-->
     <para>
      Fix crash when a logical replication worker does <command>ALTER
      SUBSCRIPTION REFRESH</command> (Peter Smith)
      <ulink url="&commit_baseurl;ef70b6f8e">&sect;</ulink>
     </para>

     <para>
      The core code won't do this, but a replica trigger could.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [f900a79ec] 2021-02-15 16:04:59 +1300
Branch: REL_13_STABLE [6c23e5ae9] 2021-02-15 16:05:42 +1300
Branch: REL_12_STABLE [a27f3a7f4] 2021-02-15 16:06:18 +1300
Branch: REL_11_STABLE [1fefe8879] 2021-02-15 16:06:25 +1300
Branch: REL_10_STABLE [800131df7] 2021-02-15 16:08:24 +1300
Branch: REL9_6_STABLE [09a3b19e3] 2021-02-15 16:09:14 +1300
-->
     <para>
      Ensure we default to <varname>wal_sync_method</varname>
      = <literal>fdatasync</literal> on recent FreeBSD (Thomas Munro)
      <ulink url="&commit_baseurl;6c23e5ae9">&sect;</ulink>
     </para>

     <para>
      FreeBSD 13 supports <literal>open_datasync</literal>, which would
      normally become the default choice.  However, it's unclear whether
      that is actually an improvement for Postgres, so preserve the
      existing default for now.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Geoghegan <pg@bowt.ie>
Branch: master [9f3665fbf] 2021-03-10 16:27:01 -0800
Branch: REL_13_STABLE [9663d1244] 2021-03-10 16:26:58 -0800
Author: Peter Geoghegan <pg@bowt.ie>
Branch: master [5f8727f5a] 2021-03-10 17:07:57 -0800
Branch: REL_13_STABLE [1fc5a5738] 2021-03-10 17:07:55 -0800
-->
     <para>
      Disable the <varname>vacuum_cleanup_index_scale_factor</varname>
      parameter and storage option (Peter Geoghegan)
      <ulink url="&commit_baseurl;9663d1244">&sect;</ulink>
      <ulink url="&commit_baseurl;1fc5a5738">&sect;</ulink>
     </para>

     <para>
      The notion of tracking <quote>stale</quote> index statistics proved
      to interact badly with
      the <varname>autovacuum_vacuum_insert_threshold</varname> parameter,
      resulting in unnecessary full-index scans and consequent degradation
      of autovacuum performance.  The latter mechanism seems superior, so
      remove the stale-statistics logic.  The control parameter for that,
      <varname>vacuum_cleanup_index_scale_factor</varname>, will be
      removed entirely in v14.  In v13, it remains present to avoid
      breaking existing configuration files, but it no longer does
      anything.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [e798d095d] 2021-05-04 10:09:12 -0400
Branch: REL_13_STABLE [91a6b3862] 2021-05-04 10:09:11 -0400
Branch: REL_12_STABLE [72fabd4bf] 2021-05-04 10:09:11 -0400
-->
     <para>
      Pass the correct trigger OID to object post-alter hooks
      during <command>ALTER CONSTRAINT</command> (&Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;91a6b3862">&sect;</ulink>
     </para>

     <para>
      When updating trigger properties during <command>ALTER
      CONSTRAINT</command>, the post-alter hook was told that we are
      updating a trigger, but the constraint's OID was passed instead of
      the trigger's.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [637668fb1] 2021-02-15 14:27:33 +1300
Branch: REL_13_STABLE [9fe40913c] 2021-02-15 14:20:42 +1300
Branch: REL_12_STABLE [840eda04e] 2021-02-15 14:20:52 +1300
Branch: REL_11_STABLE [acafdd9ed] 2021-02-15 14:21:01 +1300
Branch: REL_10_STABLE [4b426f77c] 2021-02-15 14:22:08 +1300
Branch: REL9_6_STABLE [8a07e5bd8] 2021-02-15 14:22:19 +1300
-->
     <para>
      Ensure we finish cleaning up when interrupted while detaching a DSM
      segment (Thomas Munro)
      <ulink url="&commit_baseurl;9fe40913c">&sect;</ulink>
     </para>

     <para>
      This error could result in temporary files not being cleaned up
      promptly after a parallel query.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [e835e89a0] 2021-03-20 12:47:21 -0400
Branch: REL_13_STABLE [4b41f6923] 2021-03-20 12:47:35 -0400
Branch: REL_12_STABLE [2f31414f4] 2021-03-20 12:47:42 -0400
Branch: REL_11_STABLE [8c830148d] 2021-03-20 12:47:48 -0400
Branch: REL_10_STABLE [ad6c19066] 2021-03-20 12:47:53 -0400
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9bacdf9f5] 2021-03-18 22:22:47 -0400
Branch: REL_13_STABLE [12354839e] 2021-03-18 22:21:58 -0400
Branch: REL_12_STABLE [4eca51d44] 2021-03-18 22:21:58 -0400
Branch: REL_11_STABLE [20f11ca0d] 2021-03-18 22:21:58 -0400
Branch: REL_10_STABLE [ba986b7bc] 2021-03-18 22:21:58 -0400
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [377b7a830] 2021-03-18 22:22:47 -0400
Branch: REL_13_STABLE [642b0b69b] 2021-03-18 22:09:41 -0400
Branch: REL_12_STABLE [fc552f868] 2021-03-18 22:09:41 -0400
Branch: REL_11_STABLE [26a3ae06d] 2021-03-18 22:09:41 -0400
Branch: REL_10_STABLE [5058e95a6] 2021-03-18 22:09:41 -0400
Branch: REL9_6_STABLE [7e2521770] 2021-03-18 22:09:41 -0400
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d303849b0] 2021-03-18 22:22:47 -0400
Branch: REL_13_STABLE [eba939551] 2021-03-18 21:44:43 -0400
Branch: REL_12_STABLE [92bc14a10] 2021-03-18 21:44:43 -0400
Branch: REL_11_STABLE [099d2914f] 2021-03-18 21:44:43 -0400
Branch: REL_10_STABLE [0b618ddf8] 2021-03-18 21:44:43 -0400
Branch: REL9_6_STABLE [09e961929] 2021-03-18 21:44:43 -0400
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [415ffdc22] 2021-03-18 22:22:47 -0400
Branch: REL_13_STABLE [ea3989f34] 2021-03-18 20:50:56 -0400
Branch: REL_12_STABLE [1452a0bb8] 2021-03-18 20:50:56 -0400
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [28644fac1] 2021-03-18 22:22:47 -0400
Branch: REL_13_STABLE [536836970] 2021-03-18 20:37:09 -0400
Branch: REL_12_STABLE [fbcc9fe33] 2021-03-18 20:37:09 -0400
Branch: REL_11_STABLE [967b693ea] 2021-03-18 20:37:09 -0400
Branch: REL_10_STABLE [2bed650c4] 2021-03-18 20:37:09 -0400
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [4b12ab18c] 2021-03-16 16:03:06 -0400
Branch: REL_13_STABLE [4d072bf2a] 2021-03-16 16:02:49 -0400
Branch: REL_12_STABLE [6e3475556] 2021-03-16 16:02:49 -0400
Branch: REL_11_STABLE [a2764d87d] 2021-03-16 16:02:50 -0400
Branch: REL_10_STABLE [7ce7f2b79] 2021-03-16 16:02:50 -0400
-->
     <para>
      Fix assorted minor memory leaks in the server (Tom Lane, Andres Freund)
      <ulink url="&commit_baseurl;4b41f6923">&sect;</ulink>
      <ulink url="&commit_baseurl;12354839e">&sect;</ulink>
      <ulink url="&commit_baseurl;642b0b69b">&sect;</ulink>
      <ulink url="&commit_baseurl;eba939551">&sect;</ulink>
      <ulink url="&commit_baseurl;ea3989f34">&sect;</ulink>
      <ulink url="&commit_baseurl;536836970">&sect;</ulink>
      <ulink url="&commit_baseurl;4d072bf2a">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [614b7f18b] 2021-02-18 23:28:15 +0900
Branch: REL_13_STABLE [d4b667e93] 2021-02-18 23:28:58 +0900
-->
     <para>
      Fix uninitialized variable in walreceiver's statistics in shared
      memory (Fujii Masao)
      <ulink url="&commit_baseurl;d4b667e93">&sect;</ulink>
     </para>

     <para>
      This error was harmless on most platforms, but could cause issues
      on platforms lacking atomic variables and/or spinlock support.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [b94409a02] 2021-05-03 12:18:27 +0200
Branch: REL_13_STABLE [e48ce7ef0] 2021-05-03 21:01:09 +0200
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [fa8fbadb9] 2021-05-10 11:40:03 +0200
Branch: REL_13_STABLE [0d204a4b0] 2021-05-10 13:56:21 +0200
-->
     <para>
      Reduce the overhead of dtrace probes for LWLock operations, when
      dtrace support is compiled in but not active (Peter Eisentraut)
      <ulink url="&commit_baseurl;e48ce7ef0">&sect;</ulink>
      <ulink url="&commit_baseurl;0d204a4b0">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c2db458c1] 2021-04-13 13:37:07 -0400
Branch: REL_13_STABLE [97b7ad468] 2021-04-13 13:37:07 -0400
Branch: REL_12_STABLE [6530df6c2] 2021-04-13 13:37:07 -0400
Branch: REL_11_STABLE [22f2a98cf] 2021-04-13 13:37:07 -0400
-->
     <para>
      Fix failure when a PL/pgSQL <command>DO</command> block makes use of
      both composite-type variables and transaction control (Tom Lane)
      <ulink url="&commit_baseurl;97b7ad468">&sect;</ulink>
     </para>

     <para>
      Previously, such cases led to errors about leaked tuple descriptors.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [51c54bb60] 2021-03-11 14:43:45 -0500
Branch: REL_13_STABLE [3580b4a0c] 2021-03-11 14:43:45 -0500
Branch: REL_12_STABLE [56defbdd0] 2021-03-11 14:43:45 -0500
Branch: REL_11_STABLE [d3a557894] 2021-03-11 14:43:45 -0500
Branch: REL_10_STABLE [d2be6cdc5] 2021-03-11 14:43:45 -0500
Branch: REL9_6_STABLE [a98e53e10] 2021-03-11 14:43:45 -0500
-->
     <para>
      Prevent infinite loop in <application>libpq</application>
      if a ParameterDescription message with a corrupt length is received
      (Tom Lane)
      <ulink url="&commit_baseurl;3580b4a0c">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [75dbfe4ca] 2021-03-02 15:39:34 -0300
Branch: REL_13_STABLE [b52fd1e7c] 2021-03-02 15:39:34 -0300
Branch: REL_12_STABLE [f92776791] 2021-03-02 15:39:34 -0300
Branch: REL_11_STABLE [ae1c1d84e] 2021-03-02 15:39:34 -0300
Branch: REL_10_STABLE [926139dd0] 2021-03-02 15:39:34 -0300
-->
     <para>
      When <application>initdb</application> prints instructions about how
      to start the server, make the path shown
      for <application>pg_ctl</application> use backslash separators on
      Windows (Nitin Jadhav)
      <ulink url="&commit_baseurl;b52fd1e7c">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ea8013854] 2021-03-23 14:27:50 -0400
Branch: REL_13_STABLE [c6eac71a8] 2021-03-23 14:27:50 -0400
Branch: REL_12_STABLE [beac4bd65] 2021-03-23 14:27:50 -0400
Branch: REL_11_STABLE [d75edab42] 2021-03-23 14:27:50 -0400
Branch: REL_10_STABLE [d5a905ed5] 2021-03-23 14:27:50 -0400
Branch: REL9_6_STABLE [4f670c64e] 2021-03-23 14:27:50 -0400
-->
     <para>
      Fix <application>psql</application> to restore the previous behavior
      of <literal>\connect
      service=<replaceable>something</replaceable></literal> (Tom Lane)
      <ulink url="&commit_baseurl;c6eac71a8">&sect;</ulink>
     </para>

     <para>
      A previous bug fix caused environment variables (such
      as <varname>PGPORT</varname>) to override entries in the service
      file in this context.  Restore the previous behavior, in which the
      priority is the other way around.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [fe06819f1] 2021-02-19 22:01:25 +0900
Branch: REL_13_STABLE [be7485a1e] 2021-02-19 22:02:19 +0900
Branch: REL_12_STABLE [67b3ee292] 2021-02-19 22:02:44 +0900
-->
     <para>
      Fix <application>psql</application>'s <literal>ON_ERROR_ROLLBACK</literal>
      feature to handle <literal>COMMIT AND CHAIN</literal> commands
      correctly (Arthur Nascimento)
      <ulink url="&commit_baseurl;be7485a1e">&sect;</ulink>
     </para>

     <para>
      Previously, this case failed with <quote>savepoint
      "pg_psql_temporary_savepoint" does not exist</quote>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [8d645a116] 2021-03-29 18:34:39 -0300
Branch: REL_13_STABLE [f50dc2c72] 2021-03-29 18:34:39 -0300
-->
     <para>
      In <application>psql</application>, avoid repeated <quote>could not
      print result table</quote> failures after the first such error
      (&Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;f50dc2c72">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [48d67fd89] 2021-03-12 12:20:15 -0500
Branch: REL_13_STABLE [6ed059933] 2021-03-12 12:20:15 -0500
Branch: REL_12_STABLE [60e5c2b14] 2021-03-12 12:20:15 -0500
Branch: REL_11_STABLE [33aa7d13d] 2021-03-12 12:20:15 -0500
Branch: REL_10_STABLE [8915e7906] 2021-03-12 12:20:15 -0500
Branch: REL9_6_STABLE [a42c4438b] 2021-03-12 12:20:15 -0500
-->
     <para>
      Fix race condition in detection of file modification by
      <application>psql</application>'s <literal>\e</literal> and related
      commands (Laurenz Albe)
      <ulink url="&commit_baseurl;6ed059933">&sect;</ulink>
     </para>

     <para>
      A very fast typist could fool the code's file-timestamp-based
      detection of whether the temporary edit file was changed.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [feb270d10] 2021-05-04 14:18:16 +0200
Branch: REL_13_STABLE [a6a3a274a] 2021-05-04 14:18:23 +0200
Branch: REL_12_STABLE [bdaa0d2d7] 2021-05-04 14:18:33 +0200
-->
     <para>
      Fix <application>pg_dump</application>'s dumping of
      generated columns in partitioned tables (Peter Eisentraut)
      <ulink url="&commit_baseurl;a6a3a274a">&sect;</ulink>
     </para>

     <para>
      A fix introduced in the previous minor release should not be applied
      to partitioned tables, only traditionally-inherited tables.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ec03f2df1] 2021-04-01 13:34:16 -0400
Branch: REL_13_STABLE [35421a470] 2021-04-01 13:34:16 -0400
Branch: REL_12_STABLE [84c5e0dd2] 2021-04-01 13:34:16 -0400
Branch: REL_11_STABLE [25fe401d5] 2021-04-01 13:34:16 -0400
Branch: REL_10_STABLE [1b6961c8f] 2021-04-01 13:34:16 -0400
Branch: REL9_6_STABLE [2c9b857af] 2021-04-01 13:34:16 -0400
-->
     <para>
      Fix missed file version check
      in <application>pg_restore</application> (Tom Lane)
      <ulink url="&commit_baseurl;35421a470">&sect;</ulink>
     </para>

     <para>
      When reading a custom-format archive from a non-seekable source,
      <application>pg_restore</application> neglected to check the
      archive version.  If it was fed a newer archive version than it
      can support, it would fail messily later on.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [57c081de0] 2021-04-29 15:24:37 -0400
Branch: REL_13_STABLE [bbcfee0e5] 2021-04-29 15:24:37 -0400
Branch: REL_12_STABLE [ba86371b9] 2021-04-29 15:24:37 -0400
Branch: REL_11_STABLE [404946d40] 2021-04-29 15:24:37 -0400
Branch: REL_10_STABLE [d5722c927] 2021-04-29 15:24:37 -0400
Branch: REL9_6_STABLE [54a233071] 2021-04-29 15:24:38 -0400
-->
     <para>
      Add some more checks to <application>pg_upgrade</application> for
      user tables containing non-upgradable data types (Tom Lane)
      <ulink url="&commit_baseurl;bbcfee0e5">&sect;</ulink>
     </para>

     <para>
      Fix detection of some cases where a non-upgradable data type is
      embedded within a container type (such as an array or range).
      Also disallow upgrading when user tables contain columns of
      system-defined composite types, since those types' OIDs are not
      stable across versions.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [2eb1fc8b1] 2021-04-03 00:07:00 +0900
Branch: REL_13_STABLE [104164361] 2021-04-03 00:07:49 +0900
Branch: REL_12_STABLE [24bcce3bd] 2021-04-03 00:08:05 +0900
-->
     <para>
      Fix incorrect progress-reporting calculation
      in <application>pg_checksums</application> (Shinya Kato)
      <ulink url="&commit_baseurl;104164361">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [51893c846] 2021-03-23 09:53:08 +0900
Branch: REL_13_STABLE [34279fd4f] 2021-03-23 09:54:38 +0900
Branch: REL_12_STABLE [4220e06f4] 2021-03-23 09:54:59 +0900
Branch: REL_11_STABLE [4a2627c41] 2021-03-23 09:55:21 +0900
Branch: REL_10_STABLE [5386a8506] 2021-03-23 09:55:33 +0900
Branch: REL9_6_STABLE [e73068b07] 2021-03-23 09:55:49 +0900
-->
     <para>
      Fix <application>pg_waldump</application> to
      count <literal>XACT</literal> records correctly when generating
      per-record statistics (Kyotaro Horiguchi)
      <ulink url="&commit_baseurl;34279fd4f">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [8deb6b38d] 2021-02-23 17:30:21 -0300
Branch: REL_13_STABLE [28f4b6108] 2021-02-23 17:30:21 -0300
Branch: REL_12_STABLE [2796ae2ad] 2021-02-23 17:30:21 -0300
Branch: REL_11_STABLE [258391707] 2021-02-23 17:30:21 -0300
Branch: REL_10_STABLE [bf518fefa] 2021-02-23 17:30:21 -0300
Branch: REL9_6_STABLE [0ccebe779] 2021-02-23 17:30:21 -0300
-->
     <para>
      Fix <filename>contrib/amcheck</filename> to not complain about the
      tuple flags <literal>HEAP_XMAX_LOCK_ONLY</literal>
      and <literal>HEAP_KEYS_UPDATED</literal> both being set
      (Julien Rouhaud)
      <ulink url="&commit_baseurl;28f4b6108">&sect;</ulink>
     </para>

     <para>
      This is a valid state after <literal>SELECT FOR UPDATE</literal>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [455dbc010] 2021-04-12 19:24:41 -0700
Branch: REL_13_STABLE [13881199e] 2021-04-12 19:24:58 -0700
Branch: REL_12_STABLE [4749c7ff4] 2021-04-12 19:27:09 -0700
Branch: REL_11_STABLE [c8da16ba1] 2021-04-12 19:27:31 -0700
Branch: REL_10_STABLE [fb9812b6c] 2021-04-12 19:27:36 -0700
Branch: REL9_6_STABLE [f488d19f3] 2021-04-12 19:27:38 -0700
-->
     <para>
      Adjust VPATH build rules to support recent Oracle Developer Studio
      compiler versions (Noah Misch)
      <ulink url="&commit_baseurl;13881199e">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [c3556f6fa] 2021-04-12 19:24:21 -0700
Branch: REL_13_STABLE [766c8fce5] 2021-04-12 19:24:24 -0700
Branch: REL_12_STABLE [e3ac7d176] 2021-04-12 19:24:25 -0700
Branch: REL_11_STABLE [4a3de4092] 2021-04-12 19:24:25 -0700
Branch: REL_10_STABLE [72a9bd047] 2021-04-12 19:24:25 -0700
Branch: REL9_6_STABLE [14652a19f] 2021-04-12 19:24:26 -0700
-->
     <para>
      Fix testing of PL/Python for Python 3 on Solaris (Noah Misch)
      <ulink url="&commit_baseurl;766c8fce5">&sect;</ulink>
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-2">
  <title>Release 13.2</title>

  <formalpara>
  <title>Release date:</title>
  <para>2021-02-11</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.1.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.2</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>

   <para>
    However, see the first changelog item below concerning a possible
    need to update stored views.  Also see the third and fourth changelog
    items, which describe cases in which reindexing indexes after the
    upgrade may be advisable.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c028faf2a] 2021-02-08 10:14:09 -0500
Branch: REL_13_STABLE [d525fbcfd] 2021-02-08 10:14:09 -0500
-->
     <para>
      Fix failure to check per-column <literal>SELECT</literal> privileges
      in some join queries (Tom Lane)
      <ulink url="&commit_baseurl;d525fbcfd">&sect;</ulink>
     </para>

     <para>
      In some cases involving joins, the parser failed to record all the
      columns read by a query in the column-usage bitmaps that are used
      for permissions checking.  Although the executor would still insist
      on some sort of <literal>SELECT</literal> privilege to run the
      query, this meant that a user having <literal>SELECT</literal>
      privilege on only one column of a table could nonetheless read all
      its columns through a suitably crafted query.
     </para>

     <para>
      A stored view that is subject to this problem will have incomplete
      column-usage bitmaps, and thus permissions will still not be
      enforced properly on the view after updating.  In installations that
      depend on column-level permissions for security, it is recommended
      to <command>CREATE OR REPLACE</command> all user-defined views to
      cause them to be re-parsed.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Sven Klemm for reporting this problem.
      (CVE-2021-20229)
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [6214e2b22] 2021-02-08 11:01:51 +0200
Branch: REL_13_STABLE [8e56684d5] 2021-02-08 11:01:55 +0200
Branch: REL_12_STABLE [f50e88899] 2021-02-08 11:01:55 +0200
Branch: REL_11_STABLE [cb5868cc1] 2021-02-08 11:01:55 +0200
-->
     <para>
      Fix information leakage in constraint-violation error messages
      (Heikki Linnakangas)
      <ulink url="&commit_baseurl;8e56684d5">&sect;</ulink>
     </para>

     <para>
      If an <command>UPDATE</command> command attempts to move a row to a
      different partition but finds that it violates some constraint on
      the new partition, and the columns in that partition are in
      different physical positions than in the parent table, the error
      message could reveal the contents of columns that the user does not
      have <literal>SELECT</literal> privilege on.
      (CVE-2021-3393)
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [6b4d3046f] 2021-01-20 11:58:03 +0200
Branch: REL_13_STABLE [b8403d140] 2021-01-20 11:58:25 +0200
Branch: REL_12_STABLE [0326635dd] 2021-01-20 11:58:27 +0200
-->
     <para>
      Fix incorrect detection of concurrent page splits while inserting
      into a GiST index (Heikki Linnakangas)
      <ulink url="&commit_baseurl;b8403d140">&sect;</ulink>
     </para>

     <para>
      Concurrent insertions could lead to a corrupt index with entries
      placed in the wrong pages.  It's recommended to reindex any GiST
      index that's been subject to concurrent insertions.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [8a54e12a3] 2021-01-30 00:00:27 -0800
Branch: REL_13_STABLE [86a5b309c] 2021-01-30 00:00:42 -0800
Branch: REL_12_STABLE [be843ce29] 2021-01-30 00:01:56 -0800
Branch: REL_11_STABLE [d1ab4bf6e] 2021-01-30 00:02:08 -0800
Branch: REL_10_STABLE [179775135] 2021-01-30 00:02:11 -0800
Branch: REL9_6_STABLE [d683d6528] 2021-01-30 00:04:05 -0800
Branch: REL9_5_STABLE [77a0e14f0] 2021-01-30 00:05:34 -0800
-->
     <para>
      Fix <command>CREATE INDEX CONCURRENTLY</command> to wait for
      concurrent prepared transactions (Andrey Borodin)
      <ulink url="&commit_baseurl;86a5b309c">&sect;</ulink>
     </para>

     <para>
      At the point where <command>CREATE INDEX CONCURRENTLY</command>
      waits for all concurrent transactions to complete so that it can see
      rows they inserted, it must also wait for all prepared transactions
      to complete, for the same reason.  Its failure to do so meant that
      rows inserted by prepared transactions might be omitted from the new
      index, causing queries relying on the index to miss such rows.
      In installations that have enabled prepared transactions
      (<varname>max_prepared_transactions</varname> &gt; 0),
      it's recommended to reindex any concurrently-built indexes in
      case this problem occurred when they were built.
     </para>
    </listitem>

    <listitem>
<!--
Author: Jeff Davis <jdavis@postgresql.org>
Branch: master [05c025896] 2020-12-26 17:25:30 -0800
Branch: REL_13_STABLE [7b8692eaf] 2020-12-26 17:27:50 -0800
Branch: master [fa0fdf051] 2020-12-27 09:48:44 -0800
Branch: REL_13_STABLE [6669cc769] 2020-12-27 12:11:57 -0800
Branch: master [facad3147] 2020-12-27 12:09:00 -0800
Branch: REL_13_STABLE [cd7d8cde7] 2020-12-27 12:11:58 -0800
-->
     <para>
      Avoid crash when trying to rescan an aggregation plan node
      that has both hashed and sorted grouping sets
      (Jeff Davis)
      <ulink url="&commit_baseurl;7b8692eaf">&sect;</ulink>
      <ulink url="&commit_baseurl;6669cc769">&sect;</ulink>
      <ulink url="&commit_baseurl;cd7d8cde7">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [0ff865fbe] 2021-02-04 23:01:37 -0500
Branch: REL_13_STABLE [6467661b6] 2021-02-04 23:01:33 -0500
-->
     <para>
      Fix possible incorrect query results when a hash aggregation node
      spills some tuples to disk (Tom Lane)
      <ulink url="&commit_baseurl;6467661b6">&sect;</ulink>
     </para>

     <para>
      It was possible for aggregation grouping values to be replaced
      by nulls when the tuples are read back in, leading to wrong answers.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [82e0e2930] 2021-02-04 19:12:14 -0500
Branch: REL_13_STABLE [10fcb83da] 2021-02-04 19:12:09 -0500
-->
     <para>
      Fix edge case in incremental sort (Neil Chen)
      <ulink url="&commit_baseurl;10fcb83da">&sect;</ulink>
     </para>

     <para>
      If the last tuple of a sort batch chanced to be the first tuple of
      the next group of already-sorted tuples, the code did the wrong
      thing.  This could lead to <quote>retrieved too many tuples in a
      bounded sort</quote> error messages, or to silently-wrong sorting
      results.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9624321ec] 2021-02-03 19:38:43 -0500
Branch: REL_13_STABLE [57868d957] 2021-02-03 19:38:29 -0500
Branch: REL_12_STABLE [77e760d5c] 2021-02-03 19:38:29 -0500
Branch: REL_11_STABLE [1c3a87746] 2021-02-03 19:38:29 -0500
-->
     <para>
      Avoid crash when a <literal>CALL</literal> or <literal>DO</literal>
      statement that performs a transaction rollback is executed via
      extended query protocol (Thomas Munro, Tom Lane)
      <ulink url="&commit_baseurl;57868d957">&sect;</ulink>
     </para>

     <para>
      In <productname>PostgreSQL</productname> 13, this case reliably
      caused a null-pointer dereference.  In earlier versions the bug
      seems to have no visible symptoms, but it's not quite clear that
      it could never cause a problem.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [6f5c8a8ec] 2021-01-28 16:56:07 -0300
Branch: REL_13_STABLE [16f69062e] 2021-01-28 16:56:07 -0300
-->
     <para>
      Avoid unnecessary errors with <literal>BEFORE UPDATE</literal>
      triggers on partitioned tables (&Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;16f69062e">&sect;</ulink>
     </para>

     <para>
      A <literal>BEFORE UPDATE FOR EACH ROW</literal> trigger that
      modified the row in any way prevented <command>UPDATE</command> from
      moving the row to another partition when needed; but there is no
      longer any reason for this restriction.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [1d9351a87] 2021-01-28 13:41:55 -0500
Branch: REL_13_STABLE [7f1921cb9] 2021-01-28 13:41:55 -0500
Branch: REL_12_STABLE [7c53a8067] 2021-01-28 13:41:55 -0500
Branch: REL_11_STABLE [6f94531b0] 2021-01-28 13:41:55 -0500
-->
     <para>
      Fix partition pruning logic to handle asymmetric hash partition sets
      (Tom Lane)
      <ulink url="&commit_baseurl;7f1921cb9">&sect;</ulink>
     </para>

     <para>
      If a hash-partitioned table has unequally-sized partitions (that is,
      varying modulus values), or it lacks partitions for some remainder
      values, then the planner's pruning logic could mistakenly conclude
      that some partitions don't need to be scanned, leading to failure to
      find rows that the query should find.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a0efda88a] 2021-01-19 13:25:33 -0500
Branch: REL_13_STABLE [188cd4f44] 2021-01-19 13:25:40 -0500
Branch: REL_12_STABLE [625315996] 2021-01-19 13:25:45 -0500
Branch: REL_11_STABLE [794562d07] 2021-01-19 13:25:49 -0500
Branch: REL_10_STABLE [fac54bd5e] 2021-01-19 13:25:54 -0500
Branch: REL9_6_STABLE [fe8edbb82] 2021-01-19 13:26:01 -0500
Branch: REL9_5_STABLE [0ab177bec] 2021-01-19 13:26:05 -0500
-->
     <para>
      Avoid incorrect results when <literal>WHERE CURRENT OF</literal> is
      applied to a cursor whose plan contains a MergeAppend node (Tom
      Lane)
      <ulink url="&commit_baseurl;188cd4f44">&sect;</ulink>
     </para>

     <para>
      This case is unsupported (in general, a cursor using <literal>ORDER
      BY</literal> is not guaranteed to be simply updatable); but the code
      previously did not reject it, and could silently give false matches.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [60661bbf2] 2021-01-18 18:32:30 -0500
Branch: REL_13_STABLE [f0f53195b] 2021-01-18 18:32:40 -0500
Branch: REL_12_STABLE [ba80489c6] 2021-01-18 18:32:45 -0500
Branch: REL_11_STABLE [de622e677] 2021-01-18 18:32:49 -0500
Branch: REL_10_STABLE [5cd94de77] 2021-01-18 18:32:55 -0500
Branch: REL9_6_STABLE [ffbf17463] 2021-01-18 18:33:02 -0500
Branch: REL9_5_STABLE [33a46993f] 2021-01-18 18:33:07 -0500
-->
     <para>
      Fix crash when <literal>WHERE CURRENT OF</literal> is applied to a
      cursor whose plan contains a custom scan node (David Geier)
      <ulink url="&commit_baseurl;f0f53195b">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [55dc86eca] 2021-01-21 15:37:23 -0500
Branch: REL_13_STABLE [73fc2e5ba] 2021-01-21 15:37:23 -0500
Branch: REL_12_STABLE [1cce024fd] 2021-01-21 15:37:23 -0500
-->
     <para>
      Fix planner's mishandling of placeholders whose evaluation should be
      delayed by an outer join (Tom Lane)
      <ulink url="&commit_baseurl;73fc2e5ba">&sect;</ulink>
     </para>

     <para>
      This occurs in particular with trivial subqueries containing lateral
      references to outer-join outputs.  The mistake could result in a
      malformed plan.  The known cases trigger a <quote>failed to assign
      all NestLoopParams to plan nodes</quote> error, but other symptoms
      may be possible.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [e98c90099] 2020-12-05 16:16:13 -0500
Branch: REL_13_STABLE [7d43b76f6] 2020-12-05 16:16:13 -0500
Branch: REL_12_STABLE [77a94c30d] 2020-12-05 16:16:13 -0500
-->
     <para>
      Fix planner's handling of placeholders during removal of useless
      RESULT RTEs (Tom Lane)
      <ulink url="&commit_baseurl;7d43b76f6">&sect;</ulink>
     </para>

     <para>
      This oversight could lead to <quote>no relation entry for
      relid <replaceable>N</replaceable></quote> planner errors.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [b1738ff6a] 2020-11-30 12:22:43 -0500
Branch: REL_13_STABLE [666a4de93] 2020-11-30 12:22:43 -0500
Branch: REL_12_STABLE [4f728a1f5] 2020-11-30 12:22:43 -0500
Branch: REL_11_STABLE [caecab229] 2020-11-30 12:22:43 -0500
Branch: REL_10_STABLE [785f4462d] 2020-11-30 12:22:43 -0500
Branch: REL9_6_STABLE [ab4cbb4bc] 2020-11-30 12:22:43 -0500
Branch: REL9_5_STABLE [8c5da2d51] 2020-11-30 12:22:43 -0500
-->
     <para>
      Fix planner's handling of a placeholder that is computed at some
      join level and used only at that same level (Tom Lane)
      <ulink url="&commit_baseurl;666a4de93">&sect;</ulink>
     </para>

     <para>
      This oversight could lead to <quote>failed to build
      any <replaceable>N</replaceable>-way joins</quote> planner errors.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [f4a3c0b06] 2020-12-21 18:10:20 +0100
Branch: REL_13_STABLE [ea190ed14] 2020-12-21 18:16:36 +0100
-->
     <para>
      Consider unsorted subpaths when planning a Gather Merge operation
      (James Coleman)
      <ulink url="&commit_baseurl;ea190ed14">&sect;</ulink>
     </para>

     <para>
      It's possible to use such a path by adding an explicit Sort node,
      and in some cases that gives rise to a superior plan.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [86b7cca72] 2020-12-21 18:29:49 +0100
Branch: REL_13_STABLE [be9c3cd18] 2020-12-21 18:42:58 +0100
Branch: master [fac1b470a] 2020-12-21 19:36:22 +0100
Branch: REL_13_STABLE [d0167631e] 2020-12-21 19:36:03 +0100
-->
     <para>
      Do not consider <literal>ORDER BY</literal> expressions involving
      parallel-restricted functions or set-returning functions when trying
      to parallelize sorts (James Coleman)
      <ulink url="&commit_baseurl;be9c3cd18">&sect;</ulink>
      <ulink url="&commit_baseurl;d0167631e">&sect;</ulink>
     </para>

     <para>
      Such cases cannot safely be pushed into worker processes, but the
      incremental sort feature accidentally made us consider them.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Gierth <rhodiumtoad@postgresql.org>
Branch: master [660b89928] 2020-11-24 21:58:32 +0000
Branch: REL_13_STABLE [6dda05704] 2020-11-24 21:16:58 +0000
Branch: REL_12_STABLE [ae5aa26dc] 2020-11-24 21:17:02 +0000
Branch: REL_11_STABLE [018e7d98d] 2020-11-24 21:18:37 +0000
Branch: REL_10_STABLE [321c87e5c] 2020-11-24 21:18:59 +0000
Branch: REL9_6_STABLE [6402afd98] 2020-11-24 21:19:50 +0000
Branch: REL9_5_STABLE [59ed45e27] 2020-11-24 21:36:09 +0000
-->
     <para>
      Be more careful about whether index AMs support mark/restore
      (Andrew Gierth)
      <ulink url="&commit_baseurl;6dda05704">&sect;</ulink>
     </para>

     <para>
      This prevents errors about missing support functions in rare edge
      cases.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [2ad78a87f] 2021-01-15 12:44:17 +0900
Branch: REL_13_STABLE [60369db86] 2021-01-15 12:45:25 +0900
Branch: REL_12_STABLE [19a1d7685] 2021-01-15 12:45:51 +0900
Branch: REL_11_STABLE [97b025ebe] 2021-01-15 12:46:26 +0900
-->
     <para>
      Fix overestimate of the amount of shared memory needed for parallel
      queries (Takayuki Tsunakawa)
      <ulink url="&commit_baseurl;60369db86">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [21378e1fe] 2021-01-20 11:38:17 +0900
Branch: REL_13_STABLE [31e0f9d76] 2021-01-20 11:39:14 +0900
Branch: REL_12_STABLE [5ad672fc2] 2021-01-20 11:39:17 +0900
Branch: REL_11_STABLE [1c3a4d44d] 2021-01-20 11:39:21 +0900
Branch: REL_10_STABLE [74ee3abcf] 2021-01-20 11:39:24 +0900
Branch: REL9_6_STABLE [7dc3be9df] 2021-01-20 11:39:31 +0900
Branch: REL9_5_STABLE [0ddb529cf] 2021-01-20 11:39:35 +0900
-->
     <para>
      Fix <command>ALTER DEFAULT PRIVILEGES</command> to handle duplicated
      arguments safely (Michael Paquier)
      <ulink url="&commit_baseurl;31e0f9d76">&sect;</ulink>
     </para>

     <para>
      Duplicate role or schema names within the same command could lead
      to <quote>tuple already updated by self</quote> errors or
      unique-constraint violations.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [08db7c63f] 2020-12-25 10:41:59 -0800
Branch: REL_13_STABLE [9f8a48bb2] 2020-12-25 10:42:02 -0800
Branch: REL_12_STABLE [c96698806] 2020-12-25 10:42:03 -0800
Branch: REL_11_STABLE [e83e8509b] 2020-12-25 10:42:03 -0800
Branch: REL_10_STABLE [d7c197f46] 2020-12-25 10:42:03 -0800
Branch: REL9_6_STABLE [b81d3791e] 2020-12-25 10:42:04 -0800
Branch: REL9_5_STABLE [90383a613] 2020-12-25 10:42:04 -0800
Branch: REL_10_STABLE [d176b9d5e] 2020-12-25 11:02:56 -0800
Branch: REL9_6_STABLE [3f920e876] 2020-12-25 11:03:05 -0800
Branch: REL9_5_STABLE [14649bf50] 2020-12-25 11:06:23 -0800
-->
     <para>
      Flush ACL-related caches when <structname>pg_authid</structname>
      changes (Noah Misch)
      <ulink url="&commit_baseurl;9f8a48bb2">&sect;</ulink>
     </para>

     <para>
      This change ensures that permissions-related decisions will promptly
      reflect the results of <command>ALTER ROLE ... [NO] INHERIT</command>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [7da83415e] 2021-01-30 00:12:18 -0800
Branch: REL_13_STABLE [d798ea750] 2021-01-30 00:13:58 -0800
-->
     <para>
      Fix failure to detect <quote>snapshot too old</quote> conditions
      in tables rewritten in the current transaction (Kyotaro Horiguchi,
      Noah Misch)
      <ulink url="&commit_baseurl;d798ea750">&sect;</ulink>
     </para>

     <para>
      This is only a hazard when <varname>wal_level</varname> is set
      to <literal>minimal</literal> and the rewrite is performed
      by <command>ALTER TABLE SET TABLESPACE</command>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [360bd2321] 2021-01-30 00:11:38 -0800
Branch: REL_13_STABLE [e8e3e6749] 2021-01-30 00:12:05 -0800
-->
     <para>
      Fix spurious failure of <command>CREATE PUBLICATION</command>
      when applied to a table created or rewritten in the current
      transaction (Kyotaro Horiguchi)
      <ulink url="&commit_baseurl;e8e3e6749">&sect;</ulink>
     </para>

     <para>
      This is only a hazard when <varname>wal_level</varname> is set
      to <literal>minimal</literal>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [f7f83a55b] 2020-12-01 14:02:27 -0500
Branch: REL_13_STABLE [dffc82a5b] 2020-12-01 14:02:27 -0500
Branch: REL_12_STABLE [5f9b05ada] 2020-12-01 14:02:28 -0500
Branch: REL_11_STABLE [28bb8c496] 2020-12-01 14:02:28 -0500
Branch: REL_10_STABLE [d98e27dc6] 2020-12-01 14:02:28 -0500
Branch: REL9_6_STABLE [f00c44002] 2020-12-01 14:02:28 -0500
Branch: REL9_5_STABLE [fb500296d] 2020-12-01 14:02:28 -0500
-->
     <para>
      Prevent misprocessing of ambiguous <command>CREATE TABLE
      LIKE</command> clauses (Tom Lane)
      <ulink url="&commit_baseurl;dffc82a5b">&sect;</ulink>
     </para>

     <para>
      A <literal>LIKE</literal> clause is re-examined after initial
      creation of the new table, to handle importation of indexes and
      such.  It was possible for this re-examination to find a different
      table of the same name, causing unexpected behavior; one example is
      where the new table is a temporary table of the same name as
      the <literal>LIKE</literal> target.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [97390fe8a] 2020-11-19 15:03:17 -0500
Branch: REL_13_STABLE [98f3f1d5c] 2020-11-19 15:03:17 -0500
Branch: REL_12_STABLE [87ab46421] 2020-11-19 15:03:17 -0500
Branch: REL_11_STABLE [c690ebbef] 2020-11-19 15:03:17 -0500
Branch: REL_10_STABLE [513db7b70] 2020-11-19 15:03:17 -0500
Branch: REL9_6_STABLE [159b6775f] 2020-11-19 15:03:17 -0500
Branch: REL9_5_STABLE [6631d5f26] 2020-11-19 15:03:17 -0500
-->
     <para>
      Rearrange order of operations in <command>CREATE TABLE
      LIKE</command> so that indexes are cloned before building foreign
      key constraints (Tom Lane)
      <ulink url="&commit_baseurl;98f3f1d5c">&sect;</ulink>
     </para>

     <para>
      This fixes the case where a self-referential foreign key constraint
      declared in the outer <command>CREATE TABLE</command> depends on an
      index that's coming from the <literal>LIKE </literal> clause.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [c9a0dc348] 2021-01-15 23:31:22 +0100
Branch: REL_13_STABLE [d26d4c717] 2021-01-15 23:32:54 +0100
Branch: REL_12_STABLE [943a113bc] 2021-01-15 23:33:16 +0100
Branch: REL_11_STABLE [f52db9694] 2021-01-15 23:33:44 +0100
Branch: REL_10_STABLE [c22539756] 2021-01-15 23:34:02 +0100
-->
     <para>
      Disallow <command>CREATE STATISTICS</command> on system catalogs
      (Tomas Vondra)
      <ulink url="&commit_baseurl;d26d4c717">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [dd705a039] 2021-02-06 15:17:01 -0500
Branch: REL_13_STABLE [4353bc878] 2021-02-06 15:17:01 -0500
Branch: REL_12_STABLE [f73321957] 2021-02-06 15:17:01 -0500
Branch: REL_11_STABLE [580069037] 2021-02-06 15:17:02 -0500
Branch: REL_10_STABLE [ad85e5efa] 2021-02-06 15:17:02 -0500
Branch: REL9_6_STABLE [7736ab05f] 2021-02-06 15:17:02 -0500
Branch: REL9_5_STABLE [5ad03374b] 2021-02-06 15:17:02 -0500
-->
     <para>
      Disallow converting an inheritance child table to a view
      (Tom Lane)
      <ulink url="&commit_baseurl;4353bc878">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [9f35f9437] 2020-12-01 13:21:03 +1300
Branch: REL_13_STABLE [fd3a75d82] 2020-12-01 13:22:01 +1300
Branch: REL_12_STABLE [50f338574] 2020-12-01 13:37:00 +1300
Branch: REL_11_STABLE [d5706ad7b] 2020-12-01 13:46:27 +1300
Branch: REL_10_STABLE [22701755d] 2020-12-01 14:43:04 +1300
Branch: REL9_6_STABLE [d0bbe2122] 2020-12-01 14:50:41 +1300
Branch: REL9_5_STABLE [e00928de8] 2020-12-01 14:54:49 +1300
-->
     <para>
      Ensure that disk space allocated for a dropped relation is released
      promptly at commit (Thomas Munro)
      <ulink url="&commit_baseurl;fd3a75d82">&sect;</ulink>
     </para>

     <para>
      Previously, if the dropped relation spanned multiple 1GB segments,
      only the first segment was truncated immediately.  Other segments
      were simply unlinked, which doesn't authorize the kernel to release
      the storage so long as any other backends still have the files open.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [ebfe2dbd6] 2021-01-14 15:32:14 -0300
Branch: REL_13_STABLE [5b01a6f13] 2021-01-14 15:32:14 -0300
Branch: REL_12_STABLE [c9b702552] 2021-01-14 15:32:14 -0300
Branch: REL_11_STABLE [c442b32c2] 2021-01-14 15:32:14 -0300
-->
     <para>
      Prevent dropping a tablespace that is referenced by a partitioned
      relation, but is not used for any actual storage (&Aacute;lvaro
      Herrera)
      <ulink url="&commit_baseurl;5b01a6f13">&sect;</ulink>
     </para>

     <para>
      Previously this was allowed, but subsequent operations on the
      partitioned relation would fail.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [3df51ca8b] 2020-11-27 20:16:44 +0900
Branch: REL_13_STABLE [dcc20946a] 2020-11-27 20:17:33 +0900
Branch: REL_12_STABLE [fce17e486] 2020-11-27 20:18:02 +0900
-->
     <para>
      Fix progress reporting for <command>CLUSTER</command> (Matthias van
      de Meent)
      <ulink url="&commit_baseurl;dcc20946a">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [c444472af] 2021-02-05 11:14:56 +0200
Branch: REL_13_STABLE [c87cbd51e] 2021-02-05 11:19:48 +0200
Branch: REL_12_STABLE [9b0ce8957] 2021-02-05 11:16:33 +0200
Branch: REL_11_STABLE [d9b4163c5] 2021-02-05 11:16:53 +0200
Branch: REL_10_STABLE [c06632e48] 2021-02-05 11:17:07 +0200
Branch: REL9_6_STABLE [e152ccc7f] 2021-02-05 11:17:13 +0200
Branch: REL9_5_STABLE [aaf266157] 2021-02-05 11:17:27 +0200
-->
     <para>
      Fix handling of backslash-escaped multibyte characters
      in <command>COPY FROM</command> (Heikki Linnakangas)
      <ulink url="&commit_baseurl;c87cbd51e">&sect;</ulink>
     </para>

     <para>
      A backslash followed by a multibyte character was not handled
      correctly.  In some client character encodings, this could lead to
      misinterpreting part of a multibyte character as a field separator
      or end-of-copy-data marker.
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [2cccb627f] 2020-11-18 12:39:15 +0200
Branch: REL_13_STABLE [340ae3cfb] 2020-11-20 14:41:14 +0200
Branch: REL_12_STABLE [888fa2bae] 2020-11-20 14:46:47 +0200
Branch: REL_11_STABLE [57b5d8484] 2020-11-20 14:49:25 +0200
Branch: REL_10_STABLE [1dbe627fd] 2020-11-20 14:49:42 +0200
Branch: REL9_6_STABLE [02a2dbe91] 2020-11-20 14:57:15 +0200
Branch: REL9_5_STABLE [ded7db4c1] 2020-11-20 14:57:51 +0200
-->
     <para>
      Avoid preallocating executor hash tables
      in <command>EXPLAIN</command> without <literal>ANALYZE</literal>
      (Alexey Bashtanov)
      <ulink url="&commit_baseurl;340ae3cfb">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9c83b54a9] 2020-11-28 14:03:40 -0500
Branch: REL_13_STABLE [f5de090cc] 2020-11-28 14:03:40 -0500
Branch: REL_12_STABLE [cbc7a7a10] 2020-11-28 14:03:40 -0500
Branch: REL_11_STABLE [40f2fbe71] 2020-11-28 14:03:40 -0500
Branch: REL_10_STABLE [f6324bbbe] 2020-11-28 14:03:40 -0500
Branch: REL9_6_STABLE [8a4069766] 2020-11-28 14:03:40 -0500
Branch: REL9_5_STABLE [60d6c7143] 2020-11-28 14:03:40 -0500
-->
     <para>
      Fix recently-introduced race condition
      in <command>LISTEN</command>/<command>NOTIFY</command> queue
      handling (Tom Lane)
      <ulink url="&commit_baseurl;f5de090cc">&sect;</ulink>
     </para>

     <para>
      A newly-listening backend could attempt to read SLRU pages that
      were in process of being truncated, possibly causing an error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ff5d5611c] 2020-12-21 13:11:50 -0500
Branch: REL_13_STABLE [38d30a14b] 2020-12-21 13:11:51 -0500
Branch: REL_12_STABLE [38bef9e43] 2020-12-21 13:11:29 -0500
Branch: REL_11_STABLE [75c8ef5ae] 2020-12-21 13:11:29 -0500
Branch: REL_10_STABLE [542248f9d] 2020-12-21 13:11:30 -0500
Branch: REL9_6_STABLE [1d5f3f976] 2020-12-21 13:11:30 -0500
Branch: REL9_5_STABLE [edcdbc44e] 2020-12-21 13:11:30 -0500
-->
     <para>
      Allow the <type>jsonb</type> concatenation operator to handle all
      combinations of JSON data types (Tom Lane)
      <ulink url="&commit_baseurl;38d30a14b">&sect;</ulink>
     </para>

     <para>
      We can concatenate two JSON objects or two JSON arrays.  Handle
      other cases by wrapping non-array inputs in one-element arrays,
      then performing an array concatenation.  Previously, some
      combinations of inputs followed this rule but others arbitrarily
      threw an error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [afcc8772e] 2021-01-08 12:16:00 -0500
Branch: REL_13_STABLE [49c928c0c] 2021-01-08 12:16:00 -0500
Branch: REL_12_STABLE [8354371d0] 2021-01-08 12:16:00 -0500
Branch: REL_11_STABLE [769908811] 2021-01-08 12:16:00 -0500
Branch: REL_10_STABLE [2d540ac5f] 2021-01-08 12:16:00 -0500
Branch: REL9_6_STABLE [085a1cfb3] 2021-01-08 12:16:00 -0500
Branch: REL9_5_STABLE [0c23f30fa] 2021-01-08 12:16:00 -0500
-->
     <para>
      Fix use of uninitialized value while parsing a <literal>*</literal>
      quantifier in a BRE-mode regular expression (Tom Lane)
      <ulink url="&commit_baseurl;49c928c0c">&sect;</ulink>
     </para>

     <para>
      This error could cause the quantifier to act non-greedy, that is
      behave like a <literal>*?</literal> quantifier would do in full
      regular expressions.
     </para>
    </listitem>

    <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Branch: master [bc43b7c2c] 2021-01-05 11:15:28 +0000
Branch: REL_13_STABLE [e15c384d7] 2021-01-05 11:08:59 +0000
Branch: REL_12_STABLE [258b77005] 2021-01-05 11:07:12 +0000
Branch: REL_11_STABLE [160a9e425] 2021-01-05 11:05:58 +0000
Branch: REL_10_STABLE [275b190b3] 2021-01-05 11:04:41 +0000
Branch: REL9_6_STABLE [9a299dff2] 2021-01-05 11:02:46 +0000
Branch: master [fead67c24] 2021-01-05 11:52:42 +0000
Branch: REL_13_STABLE [5777b6ea2] 2021-01-05 11:51:21 +0000
Branch: REL_12_STABLE [740780a61] 2021-01-05 11:50:11 +0000
Branch: REL_11_STABLE [ab042d010] 2021-01-05 11:48:45 +0000
Branch: REL_10_STABLE [0097193b1] 2021-01-05 11:46:44 +0000
Branch: REL9_6_STABLE [f0b9bada5] 2021-01-05 11:45:17 +0000
-->
     <para>
      Fix numeric <function>power()</function> for the case where the
      exponent is exactly <literal>INT_MIN</literal> (-2147483648)
      (Dean Rasheed)
      <ulink url="&commit_baseurl;e15c384d7">&sect;</ulink>
      <ulink url="&commit_baseurl;5777b6ea2">&sect;</ulink>
     </para>

     <para>
      Previously, a result with no significant digits was produced.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [4bd3fad80] 2021-01-04 18:32:44 -0500
Branch: REL_13_STABLE [9e7d87ca8] 2021-01-04 18:32:40 -0500
Branch: REL_12_STABLE [7c98759e0] 2021-01-04 18:32:40 -0500
Branch: REL_11_STABLE [50a420bee] 2021-01-04 18:32:40 -0500
-->
     <para>
      Fix integer-overflow cases in <function>substring()</function>
      functions (Tom Lane, Pavel Stehule)
      <ulink url="&commit_baseurl;9e7d87ca8">&sect;</ulink>
     </para>

     <para>
      If the specified starting index and length overflow an integer when
      added together, <function>substring()</function> misbehaved, either
      throwing a bogus <quote>negative substring length</quote> error for
      a case that should succeed, or failing to complain that a negative
      length is negative (and instead returning the whole string, in most
      cases).
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [6db992833] 2021-01-16 12:21:35 -0800
Branch: REL_13_STABLE [6eb3fc7fc] 2021-01-16 12:21:38 -0800
Branch: REL_12_STABLE [66087f7e9] 2021-01-16 12:21:39 -0800
Branch: REL_11_STABLE [677f6cb1d] 2021-01-16 12:21:39 -0800
Branch: REL_10_STABLE [9afba9b0e] 2021-01-16 12:21:39 -0800
Branch: REL9_6_STABLE [1a31d8c52] 2021-01-16 12:21:39 -0800
Branch: REL9_5_STABLE [c424c75f5] 2021-01-16 12:21:39 -0800
-->
     <para>
      Prevent possible data loss from incorrect detection of the
      wraparound point of an SLRU log
      (Noah Misch)
      <ulink url="&commit_baseurl;6eb3fc7fc">&sect;</ulink>
     </para>

     <para>
      The wraparound point typically falls in the middle of a page, which
      must be rounded off to a page boundary, and that was not done
      correctly.  No issue could arise unless an installation had gotten
      to within one page of SLRU overflow, which is unlikely in a
      properly-functioning system.  If this did happen, it would manifest
      in later <quote>apparent wraparound</quote> or <quote>could not
      access status of transaction</quote> errors.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [fef5b47f6] 2021-01-14 12:27:11 +0900
Branch: REL_13_STABLE [94f52929a] 2021-01-14 12:28:47 +0900
Branch: master [424d7a9b2] 2021-01-14 23:55:33 +0900
Branch: REL_13_STABLE [8523a0971] 2021-01-14 23:56:45 +0900
-->
     <para>
      Fix WAL-reading logic to handle timeline switches correctly (Kyotaro
      Horiguchi, Fujii Masao)
      <ulink url="&commit_baseurl;94f52929a">&sect;</ulink>
      <ulink url="&commit_baseurl;8523a0971">&sect;</ulink>
     </para>

     <para>
      Previously, if WAL archiving is enabled, a standby could fail to
      follow a primary running on a newer timeline, with errors
      like <quote>requested WAL segment has already been removed</quote>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [ee1b38f65] 2021-01-13 08:19:50 +0530
Branch: REL_13_STABLE [0685c5c1b] 2021-01-13 08:31:45 +0530
Branch: REL_12_STABLE [0b2ae3c92] 2021-01-13 08:40:06 +0530
Branch: REL_11_STABLE [7adc408f4] 2021-01-13 08:50:13 +0530
Branch: REL_10_STABLE [636b6f99c] 2021-01-13 09:01:57 +0530
Branch: REL9_6_STABLE [f2b268ee0] 2021-01-13 09:12:59 +0530
Branch: REL9_5_STABLE [4bccceaa9] 2021-01-13 09:22:03 +0530
-->
     <para>
      Fix memory leak in walsender processes while sending new snapshots
      for logical decoding (Amit Kapila)
      <ulink url="&commit_baseurl;0685c5c1b">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
Branch: master [044aa9e70] 2021-01-12 08:19:39 +0530
Branch: REL_13_STABLE [decf3fe61] 2021-01-12 08:30:16 +0530
-->
     <para>
      Fix relation cache leak in walsender processes while sending row
      changes via the root of a partitioned relation during logical
      replication (Amit Langote, Mark Zhao)
      <ulink url="&commit_baseurl;decf3fe61">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Jeff Davis <jdavis@postgresql.org>
Branch: master [a58db3aa1] 2020-12-14 23:47:30 -0800
Branch: REL_13_STABLE [fde5f130c] 2020-12-14 23:48:44 -0800
Branch: REL_12_STABLE [706d84fe7] 2020-12-14 23:48:04 -0800
Branch: REL_11_STABLE [4ee058a3b] 2020-12-14 23:49:06 -0800
Branch: REL_10_STABLE [ac7df6e8f] 2020-12-14 23:49:29 -0800
Branch: REL9_6_STABLE [f10da1e9c] 2020-12-14 23:49:57 -0800
Branch: REL9_5_STABLE [133a0906d] 2020-12-14 23:50:20 -0800
-->
     <para>
      Fix walsender to accept additional commands after
      terminating replication (Jeff Davis)
      <ulink url="&commit_baseurl;fde5f130c">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [8900b5a9d] 2021-01-06 12:39:18 +0900
Branch: REL_13_STABLE [0f8977b3f] 2021-01-06 12:30:37 +0900
Branch: REL_12_STABLE [9f540f840] 2021-01-06 12:31:23 +0900
Branch: REL_11_STABLE [e83771880] 2021-01-06 12:31:55 +0900
Branch: REL_10_STABLE [4c20e78f1] 2021-01-06 12:32:32 +0900
Branch: REL9_6_STABLE [0307b98d8] 2021-01-06 12:33:28 +0900
-->
     <para>
      Ensure detection of deadlocks between hot standby backends and the
      startup (WAL-application) process (Fujii Masao)
      <ulink url="&commit_baseurl;0f8977b3f">&sect;</ulink>
     </para>

     <para>
      The startup process did not run the deadlock detection code, so that
      in situations where the startup process is last to join a circular
      wait situation, the deadlock might never be recognized.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Geoghegan <pg@bowt.ie>
Branch: master [422881744] 2020-12-30 16:29:05 -0800
Branch: REL_13_STABLE [7a57960ba] 2020-12-30 16:29:03 -0800
Branch: REL_12_STABLE [4f70e0910] 2020-12-30 16:29:01 -0800
Branch: master [32d6287d2] 2020-12-30 17:21:42 -0800
Branch: REL_13_STABLE [55e535226] 2020-12-30 17:21:41 -0800
Branch: REL_12_STABLE [5f95664e1] 2020-12-30 17:21:39 -0800
-->
     <para>
      Fix possible failure to detect recovery conflicts while deleting an
      index entry that references a HOT chain (Peter Geoghegan)
      <ulink url="&commit_baseurl;7a57960ba">&sect;</ulink>
      <ulink url="&commit_baseurl;55e535226">&sect;</ulink>
     </para>

     <para>
      The code failed to traverse the HOT chain and might thus compute a
      too-old XID horizon, which could lead to incorrect conflict
      processing in hot standby.  The practical impact of this bug is
      limited; in most cases the correct XID horizon would be found anyway
      from nearby operations.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [860fe27ee] 2020-12-30 11:38:42 -0500
Branch: REL_13_STABLE [861e96717] 2020-12-30 11:38:42 -0500
Branch: REL_12_STABLE [3ca19490b] 2020-12-30 11:38:42 -0500
-->
     <para>
      Ensure that a nonempty value
      of <varname>krb_server_keyfile</varname> always overrides any
      setting of <varname>KRB5_KTNAME</varname> in the server's
      environment (Tom Lane)
      <ulink url="&commit_baseurl;861e96717">&sect;</ulink>
     </para>

     <para>
      Previously, which setting took precedence depended on whether the
      client requests GSS encryption.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [3995c4249] 2020-12-28 17:58:58 -0500
Branch: REL_13_STABLE [d05e14d78] 2020-12-28 17:58:58 -0500
Branch: REL_12_STABLE [7ed616f81] 2020-12-28 17:58:58 -0500
-->
     <para>
      In server log messages about failing to match connections
      to <filename>pg_hba.conf</filename> entries, include details about
      whether GSS encryption has been activated (Kyotaro Horiguchi, Tom
      Lane)
      <ulink url="&commit_baseurl;d05e14d78">&sect;</ulink>
     </para>

     <para>
      This is relevant data if <literal>hostgssenc</literal>
      or <literal>hostnogssenc</literal> entries exist.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [622ae4621] 2020-12-28 17:44:17 -0500
Branch: REL_13_STABLE [c1c88bf03] 2020-12-28 17:44:17 -0500
Branch: REL_12_STABLE [4cfdd8a47] 2020-12-28 17:44:17 -0500
-->
     <para>
      Fix assorted issues in server's support for GSS encryption (Tom Lane)
      <ulink url="&commit_baseurl;c1c88bf03">&sect;</ulink>
     </para>

     <para>
      Remove pointless restriction that only GSS authentication
      can be used on a GSS-encrypted connection.
      Add GSS encryption information to connection-authorized log messages.
      Include GSS-related space when computing the required size of
      shared memory (this omission could have caused problems with very
      high <varname>max_connections</varname> settings).
      Avoid possible infinite recursion when reporting an unrecoverable
      GSS encryption error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [7519bd16d] 2020-12-24 17:00:43 -0500
Branch: REL_13_STABLE [0217ad806] 2020-12-24 17:00:43 -0500
Branch: REL_12_STABLE [3d8068edc] 2020-12-24 17:00:43 -0500
Branch: REL_11_STABLE [b99b6b9d6] 2020-12-24 17:00:43 -0500
Branch: REL_10_STABLE [1a6b1c460] 2020-12-24 17:00:43 -0500
-->
     <para>
      Ensure that unserviced requests for background workers are cleaned
      up when the postmaster begins a <quote>smart</quote>
      or <quote>fast</quote> shutdown sequence (Tom Lane)
      <ulink url="&commit_baseurl;0217ad806">&sect;</ulink>
     </para>

     <para>
      Previously, there was a race condition whereby a child process that
      had requested a background worker just before shutdown could wait
      indefinitely, preventing shutdown from completing.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [6db27037b] 2020-12-23 12:51:22 +0900
Branch: REL_13_STABLE [1e54664ee] 2020-12-23 12:51:35 +0900
Branch: REL_12_STABLE [67a9411d2] 2020-12-23 12:51:39 +0900
Branch: REL_11_STABLE [35ad5c7c7] 2020-12-23 12:51:42 +0900
Branch: REL_10_STABLE [f3ee99df7] 2020-12-23 12:51:46 +0900
Branch: REL9_6_STABLE [0b54a80a3] 2020-12-23 12:51:51 +0900
-->
     <para>
      Fix portability problem in parsing
      of <varname>recovery_target_xid</varname> values (Michael Paquier)
      <ulink url="&commit_baseurl;1e54664ee">&sect;</ulink>
     </para>

     <para>
      The target XID is potentially 64 bits wide, but it was parsed
      with <function>strtoul()</function>, causing misbehavior on
      platforms where <type>long</type> is 32 bits (such as Windows).
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [275b3411d] 2020-11-30 14:38:00 -0500
Branch: REL_13_STABLE [fac31b2cd] 2020-11-30 14:38:00 -0500
Branch: REL_12_STABLE [16a1e1ea4] 2020-11-30 14:38:00 -0500
Branch: REL_11_STABLE [942e441ee] 2020-11-30 14:38:00 -0500
-->
     <para>
      Avoid trying to use parallel index build in a standalone backend
      (Yulin Pei)
      <ulink url="&commit_baseurl;fac31b2cd">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [29d29d652] 2020-11-15 16:10:58 -0500
Branch: REL_13_STABLE [7c89246d0] 2020-11-15 16:10:48 -0500
Branch: REL_12_STABLE [4ac8ee9d4] 2020-11-15 16:10:48 -0500
Branch: REL_11_STABLE [9cebe4952] 2020-11-15 16:10:48 -0500
-->
     <para>
      Allow index AMs to support included columns without necessarily
      supporting multiple key columns (Tom Lane)
      <ulink url="&commit_baseurl;7c89246d0">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [03f9cd93e] 2020-11-12 10:56:33 +0900
Branch: REL_13_STABLE [9a94b9253] 2020-11-12 10:56:40 +0900
-->
     <para>
      While taking a base backup, avoid executing any SHA256 code if a
      backup manifest is not needed (Michael Paquier)
      <ulink url="&commit_baseurl;9a94b9253">&sect;</ulink>
     </para>

     <para>
      When using OpenSSL operating in FIPS mode, SHA256 hashing is
      rejected, leading to an error.  This change makes it possible to
      take a base backup on such a platform, so long
      as <option>--no-manifest</option> is specified.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Gierth <rhodiumtoad@postgresql.org>
Branch: master [a3367aa3c] 2021-01-28 10:53:10 +0000
Branch: REL_13_STABLE [75e3cca42] 2021-01-28 11:09:40 +0000
Branch: REL_12_STABLE [30f912a41] 2021-01-28 11:09:49 +0000
Branch: REL_11_STABLE [f7f2a28d4] 2021-01-28 11:09:57 +0000
-->
     <para>
      Avoid assertion failure during parallel aggregation of an
      aggregate with a non-strict deserialization function (Andrew Gierth)
      <ulink url="&commit_baseurl;75e3cca42">&sect;</ulink>
     </para>

     <para>
      No such aggregate functions exist in
      core <productname>PostgreSQL</productname>, but some extensions
      such as PostGIS provide some.  The mistake is harmless anyway in a
      non-assert build.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [07d46fceb] 2021-01-25 13:03:43 -0500
Branch: REL_13_STABLE [a26194f22] 2021-01-25 13:03:11 -0500
Branch: REL_12_STABLE [4641b2a30] 2021-01-25 13:03:11 -0500
Branch: REL_11_STABLE [a7cdd3f71] 2021-01-25 13:03:11 -0500
Branch: REL_10_STABLE [d09e8789f] 2021-01-25 13:03:11 -0500
Branch: REL9_6_STABLE [57a7d6f49] 2021-01-25 13:03:12 -0500
Branch: REL9_5_STABLE [41309f716] 2021-01-25 13:03:12 -0500
-->
     <para>
      Avoid assertion failure in <function>pg_get_functiondef()</function>
      when examining a function with a <literal>TRANSFORM</literal> option
      (Tom Lane)
      <ulink url="&commit_baseurl;a26194f22">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ea80d8d94] 2020-12-28 11:41:25 -0500
Branch: REL_13_STABLE [0ea25ed10] 2020-12-28 11:41:25 -0500
Branch: REL_12_STABLE [fd1347f9d] 2020-12-28 11:41:25 -0500
Branch: REL_11_STABLE [2e15f48d9] 2020-12-28 11:41:25 -0500
Branch: master [5f2e09bcc] 2020-12-28 11:55:23 -0500
Branch: REL_13_STABLE [63d78d106] 2020-12-28 11:55:32 -0500
Branch: REL_12_STABLE [d37965965] 2020-12-28 11:55:37 -0500
Branch: REL_11_STABLE [7966b41de] 2020-12-28 11:55:41 -0500
-->
     <para>
      Fix data structure misallocation in
      PL/pgSQL's <command>CALL</command> statement (Tom Lane)
      <ulink url="&commit_baseurl;0ea25ed10">&sect;</ulink>
      <ulink url="&commit_baseurl;63d78d106">&sect;</ulink>
     </para>

     <para>
      A <command>CALL</command> in a PL/pgSQL procedure, to another
      procedure that has OUT parameters, would fail if the called
      procedure did a <command>COMMIT</command>
      or <command>ROLLBACK</command>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ff6ce9a3a] 2020-12-28 15:43:44 -0500
Branch: REL_13_STABLE [06b844c2b] 2020-12-28 15:43:44 -0500
Branch: REL_12_STABLE [b3a5bf719] 2020-12-28 15:43:44 -0500
-->
     <para>
      In <application>libpq</application>, do not skip trying SSL after
      GSS encryption (Tom Lane)
      <ulink url="&commit_baseurl;06b844c2b">&sect;</ulink>
     </para>

     <para>
      If we successfully made a GSS-encrypted connection, but then failed
      during authentication, we would fall back to an unencrypted
      connection rather than next trying an SSL-encrypted connection.
      This could lead to unexpected connection failure, or to silently
      getting an unencrypted connection where an encrypted one is
      expected.  Fortunately, GSS encryption could only succeed if both
      client and server hold valid tickets in the same Kerberos
      infrastructure.  It seems unlikely for that to be true in an
      environment that requires SSL encryption instead.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [cf61b0734] 2020-12-28 12:13:40 -0500
Branch: REL_13_STABLE [31d2b11b9] 2020-12-28 12:13:40 -0500
-->
     <para>
      Make <application>libpq</application>'s
      <function>PQconndefaults()</function> function report the correct
      default value for <varname>channel_binding</varname>
      (Daniele Varrazzo)
      <ulink url="&commit_baseurl;31d2b11b9">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [7e5e1bba0] 2020-11-29 15:22:04 -0500
Branch: REL_13_STABLE [72b930f50] 2020-11-29 15:22:04 -0500
Branch: REL_12_STABLE [3958abdad] 2020-11-29 15:22:04 -0500
Branch: REL_11_STABLE [777ac03a6] 2020-11-29 15:22:04 -0500
Branch: REL_10_STABLE [946277fd4] 2020-11-29 15:22:04 -0500
Branch: REL9_6_STABLE [3f59a05f0] 2020-11-29 15:22:04 -0500
Branch: REL9_5_STABLE [e2d5de150] 2020-11-29 15:22:04 -0500
-->
     <para>
      In <application>psql</application>, re-allow including a password
      in a <replaceable>connection_string</replaceable> argument of a
      <command>\connect</command> command (Tom Lane)
      <ulink url="&commit_baseurl;72b930f50">&sect;</ulink>
     </para>

     <para>
      This used to work, but a recent bug fix caused the password to be
      ignored (resulting in prompting for a password).
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [314fb9bae] 2020-11-25 16:19:25 -0500
Branch: REL_13_STABLE [a0ef08172] 2020-11-25 16:19:25 -0500
Branch: REL_12_STABLE [ea7a167da] 2020-11-25 16:19:25 -0500
-->
     <para>
      In <application>psql</application>'s <command>\d</command> commands,
      don't truncate the display of column default values (Tom Lane)
      <ulink url="&commit_baseurl;a0ef08172">&sect;</ulink>
     </para>

     <para>
      Formerly, they were arbitrarily truncated at 128 characters.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [f76a85000] 2021-01-26 13:04:52 -0500
Branch: REL_13_STABLE [64bdb6e5f] 2021-01-26 13:04:52 -0500
Branch: REL_12_STABLE [82f97d33f] 2021-01-26 13:04:52 -0500
Branch: REL_11_STABLE [3fa7b9078] 2021-01-26 13:04:52 -0500
Branch: REL_10_STABLE [564cb2579] 2021-01-26 13:04:52 -0500
Branch: REL9_6_STABLE [2c2e134b7] 2021-01-26 13:04:52 -0500
Branch: REL9_5_STABLE [131825cd5] 2021-01-26 13:04:52 -0500
-->
     <para>
      Fix assorted bugs
      in <application>psql</application>'s <command>\help</command>
      command (Kyotaro Horiguchi, Tom Lane)
      <ulink url="&commit_baseurl;64bdb6e5f">&sect;</ulink>
     </para>

     <para>
      <command>\help</command> with two argument words failed to find a
      command description using only the first word, for
      example <literal>\help reset all</literal> should show the help
      for <command>RESET</command> but did not.
      Also, <command>\help</command> often failed to invoke the pager when
      it should.  It also leaked memory.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [0bf83648a] 2021-02-03 11:27:13 +0100
Branch: REL_13_STABLE [1d3ce0223] 2021-02-03 11:43:01 +0100
Branch: REL_12_STABLE [1dd6baf78] 2021-02-03 11:58:15 +0100
-->
     <para>
      Fix <application>pg_dump</application>'s dumping of inherited
      generated columns (Peter Eisentraut)
      <ulink url="&commit_baseurl;1d3ce0223">&sect;</ulink>
     </para>

     <para>
      The previous behavior resulted in (harmless) errors during restore.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9eabfe300] 2021-01-12 13:37:38 -0500
Branch: REL_13_STABLE [0011c5a0f] 2021-01-12 13:37:38 -0500
Branch: REL_12_STABLE [436d9c5ca] 2021-01-12 13:37:38 -0500
Branch: REL_11_STABLE [9f15188a1] 2021-01-12 13:37:38 -0500
Branch: master [8e396a773] 2021-01-14 16:19:38 -0500
Branch: REL_13_STABLE [79d3ac72f] 2021-01-14 16:19:38 -0500
Branch: REL_12_STABLE [0d221ecec] 2021-01-14 16:19:38 -0500
Branch: REL_11_STABLE [bb12a7f42] 2021-01-14 16:19:38 -0500
Branch: REL_10_STABLE [1c9791f66] 2021-01-14 16:19:38 -0500
-->
     <para>
      In <application>pg_dump</application>, ensure that the restore
      script runs <command>ALTER PUBLICATION ADD TABLE</command> commands
      as the owner of the publication, and similarly runs <command>ALTER
      INDEX ATTACH PARTITION</command> commands as the owner of the
      partitioned index (Tom Lane)
      <ulink url="&commit_baseurl;0011c5a0f">&sect;</ulink>
      <ulink url="&commit_baseurl;79d3ac72f">&sect;</ulink>
     </para>

     <para>
      Previously, these commands would be run by the role that started the
      restore script; which will usually work, but in corner cases that
      role might not have adequate permissions.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [f713ff7c6] 2021-01-16 12:21:35 -0800
Branch: REL_13_STABLE [b8daf894f] 2021-01-16 12:21:38 -0800
Branch: REL_12_STABLE [a0d31b1c9] 2021-01-16 12:21:39 -0800
Branch: REL_11_STABLE [c6ff165f9] 2021-01-16 12:21:39 -0800
Branch: REL_10_STABLE [b933c9c0b] 2021-01-16 12:21:39 -0800
Branch: REL9_6_STABLE [ad2b7c9bb] 2021-01-16 12:21:39 -0800
-->
     <para>
      Fix <application>pg_dump</application> to handle <literal>WITH
      GRANT OPTION</literal> in an extension's initial privileges
      (Noah Misch)
      <ulink url="&commit_baseurl;b8daf894f">&sect;</ulink>
     </para>

     <para>
      If an extension's script creates an object and grants privileges
      on it with grant option, then later the user revokes such
      privileges, <application>pg_dump</application> would generate
      incorrect SQL for reproducing the situation.  (Few if any extensions
      do this today.)
     </para>
    </listitem>

    <listitem>
<!--
Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Branch: master [2b4f31303] 2020-12-03 15:57:48 +0200
Branch: REL_13_STABLE [abd0abfb7] 2020-12-03 15:57:52 +0200
Branch: REL_12_STABLE [020f153db] 2020-12-03 15:57:54 +0200
Branch: REL_11_STABLE [63e316f0b] 2020-12-03 15:57:57 +0200
Branch: REL_10_STABLE [8b5c353ec] 2020-12-03 15:58:00 +0200
Branch: REL9_6_STABLE [0740857de] 2020-12-03 15:58:02 +0200
Branch: REL9_5_STABLE [81e3c868f] 2020-12-03 15:58:06 +0200
Branch: master [36a4ac20f] 2020-12-04 18:26:46 +0200
Branch: REL_13_STABLE [e41a2efbc] 2020-12-04 18:24:34 +0200
Branch: REL_12_STABLE [ad3fb04b9] 2020-12-04 18:24:57 +0200
Branch: REL_11_STABLE [cda50f211] 2020-12-04 18:25:12 +0200
Branch: REL_10_STABLE [45d363145] 2020-12-04 18:25:23 +0200
Branch: REL9_6_STABLE [a075c84f2] 2020-12-04 18:25:45 +0200
Branch: REL9_5_STABLE [1dd608bba] 2020-12-04 18:25:54 +0200
Branch: master [6ba581cf1] 2020-12-07 14:50:20 +0200
Branch: REL_13_STABLE [e6dc04d43] 2020-12-07 14:50:37 +0200
Branch: REL_12_STABLE [98f8cdd48] 2020-12-07 14:55:22 +0200
Branch: REL_11_STABLE [10d9c9d03] 2020-12-07 14:55:23 +0200
Branch: REL_10_STABLE [d137b14c3] 2020-12-07 14:55:25 +0200
Branch: REL9_6_STABLE [3ea8e660c] 2020-12-07 14:55:27 +0200
Branch: REL9_5_STABLE [beb6b45ab] 2020-12-07 14:55:28 +0200
-->
     <para>
      In <application>pg_rewind</application>, ensure that all WAL is
      accounted for when rewinding a standby server
      (Ian Barwick, Heikki Linnakangas)
      <ulink url="&commit_baseurl;abd0abfb7">&sect;</ulink>
      <ulink url="&commit_baseurl;e41a2efbc">&sect;</ulink>
      <ulink url="&commit_baseurl;e6dc04d43">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c21ea4d53] 2021-01-13 14:52:59 -0500
Branch: REL_13_STABLE [6b045ca6c] 2021-01-13 14:52:49 -0500
Branch: REL_12_STABLE [3e214fafc] 2021-01-13 14:52:49 -0500
Branch: REL_11_STABLE [d8bb22ab3] 2021-01-13 14:52:49 -0500
-->
     <para>
      In <application>pgbench</application>, disallow a digit as the first
      character of a variable name (Fabien Coelho)
      <ulink url="&commit_baseurl;6b045ca6c">&sect;</ulink>
     </para>

     <para>
      This prevents trying to substitute variables into timestamp literal
      values, which may contain strings like <literal>12:34</literal>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: REL_13_STABLE [f17e8f33f] 2021-01-26 16:42:13 -0300
Branch: REL_12_STABLE [fdf9d0054] 2021-01-26 16:42:13 -0300
Branch: REL_11_STABLE [fdd405c63] 2021-01-26 16:42:13 -0300
Branch: REL_10_STABLE [11a708f81] 2021-01-26 16:42:13 -0300
Branch: REL9_6_STABLE [bcae842b9] 2021-01-26 16:42:13 -0300
Branch: REL9_5_STABLE [f2dc96236] 2021-01-26 16:42:13 -0300
-->
     <para>
      Report the correct database name in connection failure error
      messages from some client programs (&Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;f17e8f33f">&sect;</ulink>
     </para>

     <para>
      If the database name was defaulted rather than given on the command
      line, <application>pg_dumpall</application>,
      <application>pgbench</application>, <application>oid2name</application>,
      and <application>vacuumlo</application> would produce misleading
      error messages after a connection failure.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [5c0f7cc54] 2021-02-02 13:49:08 -0500
Branch: REL_13_STABLE [586891394] 2021-02-02 13:49:08 -0500
Branch: REL_12_STABLE [742846958] 2021-02-02 13:49:08 -0500
Branch: REL_11_STABLE [5fc5ff61c] 2021-02-02 13:49:08 -0500
Branch: REL_10_STABLE [2671125c7] 2021-02-02 13:49:08 -0500
Branch: REL9_6_STABLE [608cf2bfd] 2021-02-02 13:49:08 -0500
Branch: REL9_5_STABLE [f0f9ed68d] 2021-02-02 13:49:08 -0500
-->
     <para>
      Fix memory leak in <filename>contrib/auto_explain</filename>
      (Japin Li)
      <ulink url="&commit_baseurl;586891394">&sect;</ulink>
     </para>

     <para>
      Memory consumed while producing the <literal>EXPLAIN</literal>
      output was not freed until the end of the current transaction (for a
      top-level statement) or the end of the surrounding statement (for a
      nested statement).  This was particularly a problem
      with <varname>log_nested_statements</varname> enabled.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [e3ebcca84] 2020-12-28 19:56:13 +0900
Branch: REL_13_STABLE [546f14374] 2020-12-28 19:57:51 +0900
Branch: REL_12_STABLE [e792ca4ac] 2020-12-28 19:59:00 +0900
Branch: REL_11_STABLE [294cdd7d0] 2020-12-28 19:59:40 +0900
Branch: REL_10_STABLE [744357d84] 2020-12-28 20:00:15 +0900
Branch: REL9_6_STABLE [03b7a1ee7] 2020-12-28 20:00:54 +0900
Branch: REL9_5_STABLE [b5c73eef8] 2020-12-28 20:01:31 +0900
-->
     <para>
      In <filename>contrib/postgres_fdw</filename>, avoid leaking open
      connections to remote servers when a user mapping or foreign server
      object is dropped (Bharath Rupireddy)
      <ulink url="&commit_baseurl;546f14374">&sect;</ulink>
     </para>

     <para>
      Open connections that depend on a dropped user mapping or foreign
      server can no longer be referenced, but formerly they were kept
      around anyway for the duration of the local session.
     </para>
    </listitem>

    <listitem>
<!--
Author: Etsuro Fujita <efujita@postgresql.org>
Branch: master [5e7fa189e] 2021-02-05 15:30:00 +0900
Branch: REL_13_STABLE [984384129] 2021-02-05 15:30:02 +0900
-->
     <para>
      Fix faulty assertion in <filename>contrib/postgres_fdw</filename>
      (Etsuro Fujita)
      <ulink url="&commit_baseurl;984384129">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [28d1601ad] 2020-12-08 15:22:12 +0900
Branch: REL_13_STABLE [dfd8bf2b9] 2020-12-08 15:22:38 +0900
Branch: REL_12_STABLE [d7ecba937] 2020-12-08 15:22:43 +0900
Branch: REL_11_STABLE [b88afd8b6] 2020-12-08 15:22:48 +0900
Branch: REL_10_STABLE [5ba1df0f1] 2020-12-08 15:22:53 +0900
Branch: REL9_6_STABLE [95992e5ed] 2020-12-08 15:22:59 +0900
Branch: REL9_5_STABLE [f95d9fd81] 2020-12-08 15:23:02 +0900
-->
     <para>
      In <filename>contrib/pgcrypto</filename>, check for error returns
      from OpenSSL's EVP functions (Michael Paquier)
      <ulink url="&commit_baseurl;dfd8bf2b9">&sect;</ulink>
     </para>

     <para>
      We do not really expect errors here, but this change silences
      warnings from static analysis tools.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ff769831e] 2020-12-22 13:23:49 -0500
Branch: REL_13_STABLE [4b0292253] 2020-12-22 13:23:49 -0500
Branch: REL_12_STABLE [f581e5383] 2020-12-22 13:23:49 -0500
Branch: REL_11_STABLE [a1bd14d54] 2020-12-22 13:23:49 -0500
-->
     <para>
      Make <filename>contrib/pg_prewarm</filename> more robust when the
      cluster is shut down before prewarming is complete (Tom Lane)
      <ulink url="&commit_baseurl;4b0292253">&sect;</ulink>
     </para>

     <para>
      Previously, autoprewarm would rewrite its status file with only the
      block numbers that it had managed to load so far, thus perhaps
      largely disabling the prewarm functionality in the next startup.
      Instead, suppress status file updates until the initial loading pass
      is complete.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Gierth <rhodiumtoad@postgresql.org>
Branch: master [3836d4b64] 2020-11-12 14:34:37 +0000
Branch: REL_13_STABLE [48ab1fa30] 2020-11-12 14:59:06 +0000
Branch: REL_12_STABLE [7f69ed4ae] 2020-11-12 14:56:58 +0000
Branch: REL_11_STABLE [7e3dc147d] 2020-11-12 14:57:04 +0000
Branch: REL_10_STABLE [068de9dd4] 2020-11-12 14:57:08 +0000
Branch: REL9_6_STABLE [245a35f96] 2020-11-12 14:57:13 +0000
Branch: REL9_5_STABLE [4b212b7c8] 2020-11-12 14:55:51 +0000
-->
     <para>
      In <filename>contrib/pg_trgm</filename>'s GiST index support, avoid
      crash in the rare case that picksplit is called on exactly two index
      items (Andrew Gierth, Alexander Korotkov)
      <ulink url="&commit_baseurl;48ab1fa30">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ec29427ce] 2020-11-10 22:51:54 -0500
Branch: REL_13_STABLE [afce7908d] 2020-11-10 22:51:55 -0500
Branch: REL_12_STABLE [171c457cd] 2020-11-10 22:51:55 -0500
Branch: REL_11_STABLE [3a89ea0eb] 2020-11-10 22:51:56 -0500
Branch: REL_10_STABLE [e87139b43] 2020-11-10 22:51:57 -0500
Branch: REL9_6_STABLE [cd39c23a2] 2020-11-10 22:51:57 -0500
Branch: REL9_5_STABLE [210564a74] 2020-11-10 22:51:58 -0500
-->
     <para>
      Fix miscalculation of timeouts
      in <filename>contrib/pg_prewarm</filename>
      and <filename>contrib/postgres_fdw</filename>
      (Alexey Kondratov, Tom Lane)
      <ulink url="&commit_baseurl;afce7908d">&sect;</ulink>
     </para>

     <para>
      The main loop in <filename>contrib/pg_prewarm</filename>'s
      autoprewarm parent process underestimated its desired sleep time by
      a factor of 1000, causing it to consume much more CPU than intended.
      When waiting for a result from a remote
      server, <filename>contrib/postgres_fdw</filename> overestimated the
      desired timeout by a factor of 1000 (though this error had been
      mitigated by imposing a clamp to 60 seconds).
     </para>

     <para>
      Both of these errors stemmed from incorrectly converting
      seconds-and-microseconds to milliseconds.  Introduce a new
      API <function>TimestampDifferenceMilliseconds()</function>
      to make it easier to get this right in the future.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [4823621db] 2021-01-15 11:28:51 -0500
Branch: REL_13_STABLE [f44ae4db5] 2021-01-15 11:29:05 -0500
Branch: REL_12_STABLE [f5d044eae] 2021-01-15 11:29:13 -0500
Branch: REL_11_STABLE [046c8face] 2021-01-15 11:29:18 -0500
Branch: REL_10_STABLE [5fa060c8f] 2021-01-15 11:29:26 -0500
Branch: REL9_6_STABLE [fc6d08b27] 2021-01-15 11:29:34 -0500
Branch: REL9_5_STABLE [3934543c2] 2021-01-15 11:29:43 -0500
Branch: master [9d23c15a0] 2021-01-20 12:07:23 -0500
Branch: REL_13_STABLE [6671e8194] 2021-01-20 12:07:31 -0500
Branch: REL_12_STABLE [561dd8d8a] 2021-01-20 12:07:35 -0500
Branch: REL_11_STABLE [cbcff1729] 2021-01-20 12:07:41 -0500
Branch: REL_10_STABLE [a3345383d] 2021-01-20 12:07:46 -0500
Branch: REL9_6_STABLE [cbcf7b130] 2021-01-20 12:07:52 -0500
Branch: REL9_5_STABLE [175f716a8] 2021-01-20 12:07:57 -0500
-->
     <para>
      Improve <application>configure</application>'s heuristics for
      selecting <varname>PG_SYSROOT</varname> on macOS (Tom Lane)
      <ulink url="&commit_baseurl;f44ae4db5">&sect;</ulink>
      <ulink url="&commit_baseurl;6671e8194">&sect;</ulink>
     </para>

     <para>
      The new method is more likely to produce desirable results when
      Xcode is newer than the underlying operating system.  Choosing
      a sysroot that does not match the OS version may result in
      nonfunctional executables.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [49407dc32] 2020-11-20 00:07:09 -0500
Branch: REL_13_STABLE [9e9a31bd0] 2020-11-20 00:58:26 -0500
Branch: REL_12_STABLE [5b8360427] 2020-11-20 00:58:26 -0500
Branch: REL_11_STABLE [d01e37845] 2020-11-20 00:58:26 -0500
Branch: REL_10_STABLE [153bf8d20] 2020-11-20 00:58:26 -0500
Branch: REL9_6_STABLE [e7abc1111] 2020-11-20 00:58:26 -0500
Branch: REL9_5_STABLE [2bb8c0f1d] 2020-11-20 00:58:26 -0500
-->
     <para>
      While building on macOS, specify <option>-isysroot</option> in
      link steps as well as compile steps (James Hilliard)
      <ulink url="&commit_baseurl;9e9a31bd0">&sect;</ulink>
     </para>

     <para>
      This likewise improves the results when Xcode is out of sync with
      the operating system.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [9543f0861] 2020-12-07 19:34:13 -0800
Branch: REL_13_STABLE [4f64daf73] 2020-12-07 18:32:56 -0800
Branch: REL_12_STABLE [b07490b91] 2020-12-07 18:39:32 -0800
Branch: REL_11_STABLE [f4f924b3e] 2020-12-07 18:40:27 -0800
Branch: master [6c57f2ed1] 2020-11-09 20:01:33 -0800
Branch: REL_13_STABLE [6a192c77d] 2020-12-07 18:32:32 -0800
Branch: REL_12_STABLE [fa7a52fb9] 2020-12-07 18:39:32 -0800
Branch: REL_11_STABLE [90eb343ef] 2020-12-07 18:40:27 -0800
-->
     <para>
      Fix JIT compilation to be compatible with LLVM 11 and LLVM 12
      (Andres Freund)
      <ulink url="&commit_baseurl;4f64daf73">&sect;</ulink>
      <ulink url="&commit_baseurl;6a192c77d">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [5da871bfa] 2020-12-07 19:34:13 -0800
Branch: REL_13_STABLE [01c6370a3] 2020-12-07 18:33:03 -0800
Branch: REL_12_STABLE [27b57f806] 2020-12-07 18:39:32 -0800
Branch: REL_11_STABLE [1e16ad101] 2020-12-07 18:40:27 -0800
-->
     <para>
      Fix potential mishandling of references to boolean variables in
      JIT expression compilation (Andres Freund)
      <ulink url="&commit_baseurl;01c6370a3">&sect;</ulink>
     </para>

     <para>
      No field reports attributable to this have been seen, but it seems
      likely that it could cause problems on some architectures.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ad84ecc98] 2020-11-16 15:16:39 -0500
Branch: REL_13_STABLE [53c7b4f62] 2020-11-16 15:16:39 -0500
Branch: REL_12_STABLE [029fa664e] 2020-11-16 15:16:39 -0500
Branch: REL_11_STABLE [89aa30a17] 2020-11-16 15:16:39 -0500
-->
     <para>
      Fix compile failure with ICU 68 and later (Tom Lane)
      <ulink url="&commit_baseurl;53c7b4f62">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [677f74e5b] 2020-12-01 11:46:56 -0300
Branch: REL_13_STABLE [5a1d1b954] 2020-12-01 11:46:56 -0300
Branch: REL_12_STABLE [f0ff52f25] 2020-12-01 11:46:56 -0300
Branch: REL_11_STABLE [49aaabdf8] 2020-12-01 11:46:56 -0300
-->
     <para>
      Avoid <function>memcpy()</function> with a NULL source pointer and
      zero count during partitioned index creation (&Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;5a1d1b954">&sect;</ulink>
     </para>

     <para>
      While such a call is not known to cause problems in itself, some
      compilers assume that the arguments of <function>memcpy()</function>
      are never NULL, which could result in incorrect optimization of
      nearby code.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c7edf4ac2] 2021-01-24 16:29:47 -0500
Branch: REL_13_STABLE [58a545344] 2021-01-24 16:29:47 -0500
Branch: REL_12_STABLE [5db6ba303] 2021-01-24 16:29:47 -0500
Branch: REL_11_STABLE [c82c015b5] 2021-01-24 16:29:47 -0500
Branch: REL_10_STABLE [728971d5f] 2021-01-24 16:29:48 -0500
Branch: REL9_6_STABLE [7e0786751] 2021-01-24 16:29:48 -0500
Branch: REL9_5_STABLE [c26a0865d] 2021-01-24 16:29:48 -0500
-->
     <para>
      Update time zone data files to <application>tzdata</application>
      release 2021a for DST law changes in Russia (Volgograd zone) and
      South Sudan, plus historical corrections for Australia, Bahamas,
      Belize, Bermuda, Ghana, Israel, Kenya, Nigeria, Palestine,
      Seychelles, and Vanuatu. (Tom Lane)
      <ulink url="&commit_baseurl;58a545344">&sect;</ulink>
     </para>

     <para>
      Notably, the Australia/Currie zone has been corrected to the point
      where it is identical to Australia/Hobart.
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13-1">
  <title>Release 13.1</title>

  <formalpara>
  <title>Release date:</title>
  <para>2020-11-12</para>
  </formalpara>

  <para>
   This release contains a variety of fixes from 13.0.
   For information about new features in major release 13, see
   <xref linkend="release-13"/>.
  </para>

  <sect2>
   <title>Migration to Version 13.1</title>

   <para>
    A dump/restore is not required for those running 13.X.
   </para>
  </sect2>

  <sect2>
   <title>Changes</title>

   <itemizedlist>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [0c3185e96] 2020-11-09 07:32:09 -0800
Branch: REL_13_STABLE [c90c84b3f] 2020-11-09 07:32:12 -0800
Branch: REL_12_STABLE [ac8f6243c] 2020-11-09 07:32:12 -0800
Branch: REL_11_STABLE [43ebfea5a] 2020-11-09 07:32:13 -0800
Branch: REL_10_STABLE [f97ecea1e] 2020-11-09 07:32:13 -0800
Branch: REL9_6_STABLE [ff3de4c21] 2020-11-09 07:32:13 -0800
Branch: REL9_5_STABLE [aefc625de] 2020-11-09 07:32:14 -0800
-->
     <para>
      Block <command>DECLARE CURSOR ... WITH HOLD</command> and firing of
      deferred triggers within index expressions and materialized view
      queries (Noah Misch)
      <ulink url="&commit_baseurl;c90c84b3f">&sect;</ulink>
     </para>

     <para>
      This is essentially a leak in the <quote>security restricted
      operation</quote> sandbox mechanism.  An attacker having permission
      to create non-temporary SQL objects could parlay this leak to
      execute arbitrary SQL code as a superuser.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Etienne Stalmans for reporting this problem.
      (CVE-2020-25695)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a45bc8a4f] 2020-09-24 18:19:38 -0400
Branch: REL_13_STABLE [cb8885ac4] 2020-09-24 18:19:38 -0400
Branch: REL_12_STABLE [fb93f784f] 2020-09-24 18:19:38 -0400
Branch: REL_11_STABLE [1738a61c8] 2020-09-24 18:19:39 -0400
Branch: REL_10_STABLE [1888ff8d0] 2020-09-24 18:19:39 -0400
Branch: REL9_6_STABLE [7c154f2fd] 2020-09-24 18:19:39 -0400
Branch: REL9_5_STABLE [56b46d3a1] 2020-09-24 18:19:39 -0400
Branch: master [8e5793ab6] 2020-10-19 19:03:46 -0400
Branch: REL_13_STABLE [1814f915b] 2020-10-19 19:03:46 -0400
Branch: REL_12_STABLE [c6d0b9b16] 2020-10-19 19:03:46 -0400
Branch: REL_11_STABLE [5a9f99bed] 2020-10-19 19:03:47 -0400
Branch: REL_10_STABLE [68f236993] 2020-10-19 19:03:47 -0400
Branch: REL9_6_STABLE [5c78f7977] 2020-10-19 19:03:47 -0400
Branch: REL9_5_STABLE [da129a04a] 2020-10-19 19:03:47 -0400
-->
     <para>
      Fix usage of complex connection-string parameters
      in <application>pg_dump</application>,
      <application>pg_restore</application>,
      <application>clusterdb</application>,
      <application>reindexdb</application>,
      and <application>vacuumdb</application> (Tom Lane)
      <ulink url="&commit_baseurl;cb8885ac4">&sect;</ulink>
      <ulink url="&commit_baseurl;1814f915b">&sect;</ulink>
     </para>

     <para>
      The <option>-d</option> parameter
      of <application>pg_dump</application>
      and <application>pg_restore</application>, or
      the <option>--maintenance-db</option> parameter of the other
      programs mentioned, can be a <quote>connection string</quote>
      containing multiple connection parameters rather than just a
      database name.  In cases where these programs need to initiate
      additional connections, such as parallel processing or processing of
      multiple databases, the connection string was forgotten and just the
      basic connection parameters (database name, host, port, and
      username) were used for the additional connections.  This could lead
      to connection failures if the connection string included any other
      essential information, such as non-default SSL or GSS parameters.
      Worse, the connection might succeed but not be encrypted as
      intended, or be vulnerable to man-in-the-middle attacks that the
      intended connection parameters would have prevented.
      (CVE-2020-25694)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [85c54287a] 2020-10-21 16:19:00 -0400
Branch: REL_13_STABLE [2e4af4110] 2020-10-21 16:19:00 -0400
Branch: REL_12_STABLE [f656517ec] 2020-10-21 16:19:01 -0400
Branch: REL_11_STABLE [20be76d5c] 2020-10-21 16:19:01 -0400
Branch: REL_10_STABLE [8175da6e7] 2020-10-21 16:19:02 -0400
Branch: REL9_6_STABLE [870a23230] 2020-10-21 16:18:41 -0400
Branch: REL9_5_STABLE [6997da09a] 2020-10-21 16:18:41 -0400
-->
     <para>
      When <application>psql</application>'s <command>\connect</command>
      command re-uses connection parameters, ensure that all
      non-overridden parameters from a previous connection string are
      re-used (Tom Lane)
      <ulink url="&commit_baseurl;2e4af4110">&sect;</ulink>
     </para>

     <para>
      This avoids cases where reconnection might fail due to omission of
      relevant parameters, such as non-default SSL or GSS options.
      Worse, the reconnection might succeed but not be encrypted as
      intended, or be vulnerable to man-in-the-middle attacks that the
      intended connection parameters would have prevented.
      This is largely the same problem as just cited
      for <application>pg_dump</application> et al,
      although <application>psql</application>'s behavior is more complex
      since the user may intentionally override some connection
      parameters.
      (CVE-2020-25694)
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [098fb0079] 2020-11-09 07:32:09 -0800
Branch: REL_13_STABLE [67029845b] 2020-11-09 07:32:12 -0800
Branch: REL_12_STABLE [3855e5b47] 2020-11-09 07:32:13 -0800
Branch: REL_11_STABLE [7b356c78f] 2020-11-09 07:32:13 -0800
Branch: REL_10_STABLE [a498db87b] 2020-11-09 07:32:13 -0800
Branch: REL9_6_STABLE [12fd81cb7] 2020-11-09 07:32:14 -0800
Branch: REL9_5_STABLE [a54dfbee1] 2020-11-09 07:32:14 -0800
-->
     <para>
      Prevent <application>psql</application>'s <command>\gset</command>
      command from modifying specially-treated variables (Noah Misch)
      <ulink url="&commit_baseurl;67029845b">&sect;</ulink>
     </para>

     <para>
      <command>\gset</command> without a prefix would overwrite whatever
      variables the server told it to.  Thus, a compromised server could
      set specially-treated variables such as <varname>PROMPT1</varname>,
      giving the ability to execute arbitrary shell code in the user's
      session.
     </para>

     <para>
      The <productname>PostgreSQL</productname> Project thanks
      Nick Cleaton for reporting this problem.
      (CVE-2020-25696)
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [4e9821b6f] 2020-10-14 20:12:26 -0300
Branch: REL_13_STABLE [72e43fc31] 2020-10-14 20:12:26 -0300
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [7f4708818] 2020-10-15 09:48:36 -0300
Branch: REL_13_STABLE [9f783aea6] 2020-10-15 09:52:35 -0300
-->
     <para>
      Fix unintended breakage of the replication protocol
      (&Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;72e43fc31">&sect;</ulink>
      <ulink url="&commit_baseurl;9f783aea6">&sect;</ulink>
     </para>

     <para>
      A walsender reports two command-completion events
      for <literal>START_REPLICATION</literal>.  This was undocumented and
      apparently unintentional; so we failed to notice that a late 13.0
      change removed the duplicate event.  However it turns out that
      walreceivers require the extra event in some code paths.  The most
      practical fix is to decree that the extra event is part of the
      protocol and resume generating it.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [aca74843e] 2020-09-24 10:39:52 +1200
Branch: REL_13_STABLE [052014a20] 2020-09-24 10:27:22 +1200
Branch: REL_12_STABLE [7664cc869] 2020-09-24 10:30:47 +1200
Branch: REL_11_STABLE [c5a5bd0bb] 2020-09-24 10:31:57 +1200
Branch: REL_10_STABLE [dd36d6b00] 2020-09-24 10:33:00 +1200
Branch: REL9_6_STABLE [d38e15979] 2020-09-24 10:35:10 +1200
Branch: REL9_5_STABLE [23d8b3577] 2020-09-24 10:36:27 +1200
-->
     <para>
      Ensure that SLRU directories are properly fsync'd during checkpoints
      (Thomas Munro)
      <ulink url="&commit_baseurl;052014a20">&sect;</ulink>
     </para>

     <para>
      This prevents possible data loss in a subsequent operating system
      crash.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d907bd054] 2020-11-03 15:41:32 -0500
Branch: REL_13_STABLE [768dbef0d] 2020-11-03 15:41:32 -0500
Branch: REL_12_STABLE [136f87ea5] 2020-11-03 15:41:32 -0500
Branch: REL_11_STABLE [501035a0a] 2020-11-03 15:41:32 -0500
Branch: REL_10_STABLE [df4405b78] 2020-11-03 15:41:32 -0500
Branch: REL9_6_STABLE [04c4b495b] 2020-11-03 15:41:32 -0500
Branch: REL9_5_STABLE [77df80cf6] 2020-11-03 15:41:32 -0500
-->
     <para>
      Fix <command>ALTER ROLE</command> for users with
      the <literal>BYPASSRLS</literal> attribute (Tom Lane, Stephen Frost)
      <ulink url="&commit_baseurl;768dbef0d">&sect;</ulink>
     </para>

     <para>
      The <literal>BYPASSRLS</literal> attribute is only allowed to be
      changed by superusers, but other <command>ALTER ROLE</command>
      operations, such as password changes, should be allowed with only
      ordinary permission checks.  The previous coding erroneously
      restricted all changes on such a role to superusers.
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [bf797a8d9] 2020-11-03 15:28:23 +0100
Branch: REL_13_STABLE [539775981] 2020-11-03 15:28:36 +0100
-->
     <para>
      Disallow <command>ALTER TABLE ONLY ... DROP EXPRESSION</command> when
      there are child tables (Peter Eisentraut)
      <ulink url="&commit_baseurl;539775981">&sect;</ulink>
     </para>

     <para>
      The current implementation cannot handle this case correctly, so just
      forbid it for now.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [bbb927b4d] 2020-10-20 19:22:09 -0300
Branch: REL_13_STABLE [5f6463a20] 2020-10-20 19:22:09 -0300
Branch: REL_12_STABLE [0e6b6f8c7] 2020-10-20 19:22:09 -0300
Branch: REL_11_STABLE [a795f6782] 2020-10-20 19:22:09 -0300
-->
     <para>
      Ensure that <command>ALTER TABLE ONLY ... ENABLE/DISABLE
      TRIGGER</command> does not recurse to child tables
      (&Aacute;lvaro Herrera)
      <ulink url="&commit_baseurl;5f6463a20">&sect;</ulink>
     </para>

     <para>
      Previously the <literal>ONLY</literal> flag was ignored.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [5b7bfc397] 2020-11-05 11:44:32 -0500
Branch: REL_13_STABLE [44b973b91] 2020-11-05 11:44:32 -0500
Branch: REL_12_STABLE [0bdf1ef3d] 2020-11-05 11:44:32 -0500
Branch: REL_11_STABLE [7dc18c619] 2020-11-05 11:44:32 -0500
-->
     <para>
      Allow <command>LOCK TABLE</command> to succeed on a self-referential
      view (Tom Lane)
      <ulink url="&commit_baseurl;44b973b91">&sect;</ulink>
     </para>

     <para>
      It previously threw an error complaining about infinite recursion,
      but there seems no need to disallow the case.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [b17ff07aa] 2020-11-01 21:22:07 +0900
Branch: REL_13_STABLE [bb62df46b] 2020-11-01 21:24:10 +0900
Branch: REL_12_STABLE [41a033b50] 2020-11-01 21:24:15 +0900
-->
     <para>
      Retain statistics about an index across <command>REINDEX
      CONCURRENTLY</command> (Michael Paquier, Fabr&iacute;zio de Royes Mello)
      <ulink url="&commit_baseurl;bb62df46b">&sect;</ulink>
     </para>

     <para>
      Non-concurrent reindexing has always preserved such statistics.
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [e66bcfb4c] 2020-09-29 14:15:57 +0900
Branch: REL_13_STABLE [1aedaba78] 2020-09-29 14:16:12 +0900
Branch: REL_12_STABLE [8aa4496dd] 2020-09-29 14:16:18 +0900
-->
     <para>
      Fix incorrect progress reporting from <command>REINDEX
      CONCURRENTLY</command> (Matthias van de Meent, Michael Paquier)
      <ulink url="&commit_baseurl;1aedaba78">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ad77039fa] 2020-10-28 13:47:02 -0400
Branch: REL_13_STABLE [70492195b] 2020-10-28 13:47:02 -0400
Branch: REL_12_STABLE [43330cdd4] 2020-10-28 13:47:02 -0400
-->
     <para>
      Ensure that <literal>GENERATED</literal> columns are updated when
      the column(s) they depend on are updated via a rule or an updatable
      view (Tom Lane)
      <ulink url="&commit_baseurl;70492195b">&sect;</ulink>
     </para>

     <para>
      This fix also takes care of possible failure to fire a
      column-specific trigger in such cases.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [72647ac3b] 2020-09-28 14:12:38 -0400
Branch: REL_13_STABLE [61a78c71a] 2020-09-28 14:12:38 -0400
Branch: REL_12_STABLE [29f20db85] 2020-09-28 14:12:38 -0400
-->
     <para>
      Fix failures with collation-dependent partition bound expressions
      (Tom Lane)
      <ulink url="&commit_baseurl;61a78c71a">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: master [560564d3a] 2020-11-04 12:46:28 +0100
Branch: REL_13_STABLE [82d4a2a7d] 2020-11-04 12:46:38 +0100
Branch: REL_12_STABLE [ea9087938] 2020-11-04 12:46:52 +0100
-->
     <para>
      Support hashing of text arrays (Peter Eisentraut)
      <ulink url="&commit_baseurl;82d4a2a7d">&sect;</ulink>
     </para>

     <para>
      Array hashing failed if the array element type is collatable.
      Notably, this prevented using hash partitioning with a text array
      column as partition key.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [3db322eaa] 2020-10-07 17:10:26 -0400
Branch: REL_13_STABLE [5ed20a689] 2020-10-07 17:10:26 -0400
-->
     <para>
      Prevent internal overflows in cross-type datetime
      comparisons (Nikita Glukhov, Alexander Korotkov, Tom Lane)
      <ulink url="&commit_baseurl;5ed20a689">&sect;</ulink>
     </para>

     <para>
      Previously, comparing a date to a timestamp would fail if the date
      is past the valid range for timestamps.  There were also corner
      cases involving overflow of close-to-the-limit timestamp values
      during timezone rotation.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [489c9c340] 2020-09-30 15:40:23 -0400
Branch: REL_13_STABLE [99fd38c02] 2020-09-30 15:40:23 -0400
Branch: REL_12_STABLE [c5232dca8] 2020-09-30 15:40:23 -0400
Branch: REL_11_STABLE [b0fe0b022] 2020-09-30 15:40:23 -0400
Branch: REL_10_STABLE [db96be24c] 2020-09-30 15:40:23 -0400
Branch: REL9_6_STABLE [19e798268] 2020-09-30 15:40:23 -0400
Branch: REL9_5_STABLE [4857e6fe1] 2020-09-30 15:40:23 -0400
-->
     <para>
      Fix off-by-one conversion of negative years to BC dates
      in <function>to_date()</function>
      and <function>to_timestamp()</function> (Dar Alathar-Yemen, Tom Lane)
      <ulink url="&commit_baseurl;99fd38c02">&sect;</ulink>
     </para>

     <para>
      Also, arrange for the combination of a negative year and an
      explicit <quote>BC</quote> marker to cancel out and produce AD.
     </para>
    </listitem>

    <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
Branch: master [c2aa562ea] 2020-09-29 11:00:22 +0300
Branch: REL_13_STABLE [abcc0ab16] 2020-09-29 11:55:15 +0300
Branch: master [927d9abb6] 2020-09-29 12:00:04 +0300
Branch: REL_13_STABLE [651bdbc81] 2020-09-29 12:00:12 +0300
-->
     <para>
      Allow the <type>jsonpath</type> <function>.datetime()</function>
      method to accept ISO 8601-format timestamps (Nikita Glukhov)
      <ulink url="&commit_baseurl;abcc0ab16">&sect;</ulink>
      <ulink url="&commit_baseurl;651bdbc81">&sect;</ulink>
     </para>

     <para>
      This is not required by SQL, but it seems appropriate since
      our <function>to_json()</function> functions generate that timestamp
      format for Javascript compatibility.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
Branch: master [fd26f7823] 2020-09-29 16:21:46 +0900
Branch: REL_13_STABLE [059caf36c] 2020-09-29 16:23:57 +0900
Branch: REL_12_STABLE [4d342b9d4] 2020-09-29 16:24:20 +0900
Branch: REL_11_STABLE [462ff7966] 2020-09-29 16:24:47 +0900
Branch: REL_10_STABLE [334417538] 2020-09-29 16:25:08 +0900
Branch: REL9_6_STABLE [7be02a3bf] 2020-09-29 16:25:20 +0900
Branch: REL9_5_STABLE [40a8fb1e0] 2020-09-29 16:25:51 +0900
-->
     <para>
      Ensure that standby servers will archive WAL timeline history files
      when <varname>archive_mode</varname> is set
      to <literal>always</literal> (Grigory Smolkin, Fujii Masao)
      <ulink url="&commit_baseurl;059caf36c">&sect;</ulink>
     </para>

     <para>
      This oversight could lead to failure of subsequent PITR recovery
      attempts.
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
Branch: master [b94109ce3] 2020-10-15 11:41:58 +1300
Branch: REL_13_STABLE [e0950135a] 2020-10-15 11:42:17 +1300
Branch: master [70516a178] 2020-10-15 18:34:21 +1300
Branch: REL_13_STABLE [47522ee00] 2020-10-15 18:38:03 +1300
-->
     <para>
      Fix edge cases in detecting premature death of the postmaster on
      platforms that use <function>kqueue()</function> (Thomas Munro)
      <ulink url="&commit_baseurl;e0950135a">&sect;</ulink>
      <ulink url="&commit_baseurl;47522ee00">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [ebb7ae839] 2020-11-03 22:31:57 +0100
Branch: REL_13_STABLE [2d26c4ac7] 2020-11-03 22:32:34 +0100
-->
     <para>
      Avoid generating an incorrect incremental-sort plan when the sort key
      is a volatile expression (James Coleman)
      <ulink url="&commit_baseurl;2d26c4ac7">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d7885b1f8] 2020-10-06 11:43:53 -0400
Branch: REL_13_STABLE [b7f166efa] 2020-10-06 11:43:53 -0400
Branch: REL_12_STABLE [3d69efc4f] 2020-10-06 11:43:54 -0400
-->
     <para>
      Fix possible crash when considering partition-wise joins
      during GEQO planning (Tom Lane)
      <ulink url="&commit_baseurl;b7f166efa">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [dfc797730] 2020-11-01 18:38:42 -0500
Branch: REL_13_STABLE [2330f4d3a] 2020-11-01 18:38:42 -0500
Branch: master [fd2997565] 2020-11-02 11:25:18 -0500
Branch: REL_13_STABLE [7957e75c5] 2020-11-02 11:25:18 -0500
-->
     <para>
      Fix possible infinite loop or corrupted output data in TOAST
      decompression (Tom Lane)
      <ulink url="&commit_baseurl;2330f4d3a">&sect;</ulink>
      <ulink url="&commit_baseurl;7957e75c5">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Geoghegan <pg@bowt.ie>
Branch: master [48e129134] 2020-11-04 18:42:27 -0800
Branch: REL_13_STABLE [02c9386ca] 2020-11-04 18:42:24 -0800
-->
     <para>
      Fix counting of the number of entries in B-tree indexes during
      cleanup-only <command>VACUUM</command>s (Peter Geoghegan)
      <ulink url="&commit_baseurl;02c9386ca">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
Branch: master [7577dd848] 2020-11-07 00:39:19 +0100
Branch: REL_13_STABLE [6a7b55f37] 2020-11-07 00:40:06 +0100
Branch: REL_12_STABLE [8149e9f9a] 2020-11-07 00:40:40 +0100
Branch: REL_11_STABLE [895d0f0e8] 2020-11-07 00:41:02 +0100
Branch: REL_10_STABLE [0b96fc977] 2020-11-07 00:41:19 +0100
Branch: REL9_6_STABLE [bae31e75f] 2020-11-07 00:41:36 +0100
Branch: REL9_5_STABLE [d2d3a4bd3] 2020-11-07 00:41:52 +0100
-->
     <para>
      Ensure that data is detoasted before being inserted into a BRIN
      index (Tomas Vondra)
      <ulink url="&commit_baseurl;6a7b55f37">&sect;</ulink>
     </para>

     <para>
      Index entries are not supposed to contain out-of-line TOAST
      pointers, but BRIN didn't get that memo.  This could lead to errors
      like <quote>missing chunk number 0 for toast value NNN</quote>.
      (If you are faced with such an error from an existing
      index, <command>REINDEX</command> should be enough to fix it.)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [371668a83] 2020-10-12 18:01:34 -0400
Branch: REL_13_STABLE [962ab473e] 2020-10-12 18:01:34 -0400
Branch: REL_12_STABLE [12945874e] 2020-10-12 18:01:34 -0400
-->
     <para>
      Fix buffered GiST index builds to work when the index has included
      columns (Pavel Borisov)
      <ulink url="&commit_baseurl;962ab473e">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [0a4b34031] 2020-11-02 21:11:50 -0500
Branch: REL_13_STABLE [a58a631b4] 2020-11-02 21:11:50 -0500
Branch: REL_12_STABLE [d3befe9b9] 2020-11-02 21:11:50 -0500
Branch: REL_11_STABLE [f28b089cb] 2020-11-02 21:11:50 -0500
Branch: REL_10_STABLE [7827497ba] 2020-11-02 21:11:50 -0500
-->
     <para>
      Fix unportable use of <function>getnameinfo()</function>
      in <structname>pg_hba_file_rules</structname> view (Tom Lane)
      <ulink url="&commit_baseurl;a58a631b4">&sect;</ulink>
     </para>

     <para>
      On FreeBSD 11, and possibly other platforms, the
      view's <structfield>address</structfield>
      and <structfield>netmask</structfield> columns were always null due
      to this error.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [f90e80b91] 2020-10-31 08:43:28 -0700
Branch: REL_13_STABLE [ab2e2ce46] 2020-10-31 08:43:32 -0700
Branch: REL_12_STABLE [741b84e9f] 2020-10-31 08:44:13 -0700
Branch: REL_11_STABLE [045466675] 2020-10-31 08:45:19 -0700
-->
     <para>
      Avoid crash if <varname>debug_query_string</varname> is NULL
      when starting a parallel worker (Noah Misch)
      <ulink url="&commit_baseurl;ab2e2ce46">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ba9f18abd] 2020-10-25 13:57:46 -0400
Branch: REL_13_STABLE [d88d8ad28] 2020-10-25 13:57:46 -0400
Branch: REL_12_STABLE [de78c1007] 2020-10-25 13:57:46 -0400
Branch: master [20d3fe900] 2020-10-26 11:36:53 -0400
Branch: master [8b39345a9] 2020-11-08 13:08:36 -0500
Branch: REL_13_STABLE [7aeb6404f] 2020-11-08 13:08:36 -0500
Branch: REL_12_STABLE [94ec005f3] 2020-11-08 13:08:36 -0500
-->
     <para>
      Avoid failures when a <literal>BEFORE ROW UPDATE</literal> trigger
      returns the <quote>old</quote> row of a table having dropped
      or <quote>missing</quote> columns (Amit Langote, Tom Lane)
      <ulink url="&commit_baseurl;d88d8ad28">&sect;</ulink>
      <ulink url="&commit_baseurl;7aeb6404f">&sect;</ulink>
     </para>

     <para>
      This method of suppressing an update could result in crashes,
      unexpected <literal>CHECK</literal> constraint failures, or
      incorrect <literal>RETURNING</literal> output,
      because <quote>missing</quote> columns would read as NULLs for those
      purposes.  (A column is <quote>missing</quote> for this purpose if
      it was added by <command>ALTER TABLE ADD COLUMN</command> with a
      non-NULL, but constant, default value.)  Dropped columns could cause
      trouble as well.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [87a174c0e] 2020-10-23 11:32:33 -0400
Branch: REL_13_STABLE [e4538708d] 2020-10-23 11:32:33 -0400
-->
     <para>
      Fix <command>EXPLAIN</command>'s output for incremental sort plans
      to have correct tag nesting in XML output mode (Daniel Gustafsson)
      <ulink url="&commit_baseurl;e4538708d">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
Branch: REL_13_STABLE [1f53d0b9f] 2020-10-20 14:09:16 +0200
Branch: REL_12_STABLE [bd0677bb8] 2020-10-20 14:31:52 +0200
Branch: REL_11_STABLE [6e03a8a30] 2020-10-20 14:50:43 +0200
Branch: REL_10_STABLE [f78ebbe68] 2020-10-20 15:19:47 +0200
Branch: REL9_6_STABLE [d4e654d15] 2020-10-20 15:35:31 +0200
Branch: REL9_5_STABLE [d27c18d26] 2020-10-20 17:22:41 +0200
-->
     <para>
      Avoid unnecessary failure when transferring very large payloads
      through shared memory queues (Markus Wanner)
      <ulink url="&commit_baseurl;1f53d0b9f">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c8ab97017] 2020-10-19 14:33:09 -0400
Branch: REL_13_STABLE [25378db74] 2020-10-19 14:33:10 -0400
-->
     <para>
      Fix omission of result data type coercion in some cases in
      SQL-language functions (Tom Lane)
      <ulink url="&commit_baseurl;25378db74">&sect;</ulink>
     </para>

     <para>
      This could lead to wrong results or crashes, depending on the data
      types involved.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [72559438f] 2020-10-15 14:29:53 -0700
Branch: REL_13_STABLE [ae3e75aba] 2020-10-15 14:30:40 -0700
Branch: REL_12_STABLE [c8a2bb0f1] 2020-10-15 14:31:32 -0700
Branch: REL_11_STABLE [f3dee5b9a] 2020-10-15 15:06:16 -0700
Branch: master [fe2a16d8b] 2020-10-15 18:17:00 -0700
Branch: REL_13_STABLE [efc9a8e98] 2020-10-15 18:17:00 -0700
Branch: REL_12_STABLE [c835c7ffe] 2020-10-15 18:17:01 -0700
Branch: REL_11_STABLE [4a4f4487d] 2020-10-15 18:17:01 -0700
-->
     <para>
      Fix incorrect handling of template function attributes in JIT code
      generation (Andres Freund)
      <ulink url="&commit_baseurl;ae3e75aba">&sect;</ulink>
      <ulink url="&commit_baseurl;efc9a8e98">&sect;</ulink>
     </para>

     <para>
      This has been shown to cause crashes on <literal>s390x</literal>,
      and very possibly there are other cases on other platforms.
     </para>
    </listitem>

    <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [f5c1167b1] 2020-10-11 21:31:37 -0700
Branch: REL_13_STABLE [d41cb63ff] 2020-10-11 21:31:40 -0700
Branch: master [88ea7a118] 2020-10-11 21:31:37 -0700
Branch: REL_13_STABLE [5efa788e1] 2020-10-11 21:31:40 -0700
-->
     <para>
      Improve code generated for compare_exchange and fetch_add operations
      on PPC (Noah Misch)
      <ulink url="&commit_baseurl;d41cb63ff">&sect;</ulink>
      <ulink url="&commit_baseurl;5efa788e1">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [e55f718fc] 2020-09-26 16:04:06 -0400
Branch: REL_13_STABLE [f7873900f] 2020-09-26 16:04:06 -0400
Branch: REL_12_STABLE [bda32733c] 2020-09-26 16:04:06 -0400
Branch: REL_11_STABLE [dd89ba578] 2020-09-26 16:04:06 -0400
Branch: REL_10_STABLE [de6725deb] 2020-09-26 16:04:06 -0400
Branch: REL9_6_STABLE [acab757ce] 2020-09-26 16:04:06 -0400
Branch: REL9_5_STABLE [bf34ae930] 2020-09-26 16:04:06 -0400
-->
     <para>
      Fix relation cache memory leaks with RLS policies (Tom Lane)
      <ulink url="&commit_baseurl;f7873900f">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [623644f02] 2020-11-06 22:52:16 -0300
Branch: REL_13_STABLE [d94d37f8c] 2020-11-06 22:52:15 -0300
Branch: REL_12_STABLE [8ad6a0c1b] 2020-11-06 22:52:15 -0300
-->
     <para>
      Fix edge-case memory leak
      in <function>index_get_partition()</function> (Justin Pryzby)
      <ulink url="&commit_baseurl;d94d37f8c">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [397ea901e] 2020-10-12 13:31:24 -0400
Branch: REL_13_STABLE [9343bfefa] 2020-10-12 13:31:24 -0400
Branch: REL_12_STABLE [f35c11770] 2020-10-12 13:31:24 -0400
Branch: REL_11_STABLE [cfa4cff30] 2020-10-12 13:31:24 -0400
Branch: REL_10_STABLE [a5c77e6b8] 2020-10-12 13:31:24 -0400
Branch: REL9_6_STABLE [c7573ab1e] 2020-10-12 13:31:24 -0400
Branch: REL9_5_STABLE [43ca5e07d] 2020-10-12 13:31:24 -0400
-->
     <para>
      Fix small memory leak when SIGHUP processing decides that a new GUC
      variable value cannot be applied without a restart (Tom Lane)
      <ulink url="&commit_baseurl;9343bfefa">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [a6b1f5365] 2020-09-29 11:18:30 -0400
Branch: REL_13_STABLE [f0e4ec74e] 2020-09-29 11:18:30 -0400
Branch: REL_12_STABLE [c1e044bb3] 2020-09-29 11:18:31 -0400
Branch: REL_11_STABLE [13a1901ba] 2020-09-29 11:18:31 -0400
-->
     <para>
      Fix memory leaks
      in <application>PL/pgsql</application>'s <command>CALL</command>
      processing (Pavel Stehule, Tom Lane)
      <ulink url="&commit_baseurl;f0e4ec74e">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [7d00a6b2d] 2020-10-17 16:53:48 -0400
Branch: REL_13_STABLE [d2074daeb] 2020-10-19 11:23:51 -0400
Branch: REL_12_STABLE [407580aab] 2020-10-19 11:23:51 -0400
Branch: REL_11_STABLE [883226441] 2020-10-19 11:23:52 -0400
Branch: REL_10_STABLE [6670e9107] 2020-10-19 11:23:52 -0400
Branch: REL9_6_STABLE [cdc7ace16] 2020-10-19 11:23:52 -0400
Branch: REL9_5_STABLE [6acc31a20] 2020-10-19 11:23:52 -0400
-->
     <para>
      In <application>libpq</application> for Windows,
      call <function>WSAStartup()</function> once per process
      and <function>WSACleanup()</function> not at all (Tom Lane,
      Alexander Lakhin)
      <ulink url="&commit_baseurl;d2074daeb">&sect;</ulink>
     </para>

     <para>
      Previously, <application>libpq</application>
      invoked <function>WSAStartup()</function> at connection start
      and <function>WSACleanup()</function> at connection cleanup.
      However, it appears that calling <function>WSACleanup()</function>
      can interfere with other program operations; notably, we have
      observed rare failures to emit expected output to stdout.  There
      appear to be no ill effects from omitting the call, so do that.
      (This also eliminates a performance issue from repeated DLL loads and
      unloads when a program performs a series of database connections.)
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [21d36747d] 2020-10-24 13:12:08 -0400
Branch: REL_13_STABLE [fd048e0cb] 2020-10-24 13:12:19 -0400
Branch: REL_12_STABLE [bdc79ddd1] 2020-10-24 13:12:26 -0400
Branch: REL_11_STABLE [12a73f29f] 2020-10-24 13:12:31 -0400
Branch: REL_10_STABLE [f38b66ec0] 2020-10-24 13:12:41 -0400
Branch: REL9_6_STABLE [379c43bda] 2020-10-24 13:12:47 -0400
Branch: REL9_5_STABLE [758b45e83] 2020-10-24 13:12:53 -0400
-->
     <para>
      Fix <application>ecpg</application> library's per-thread
      initialization logic for Windows (Tom Lane, Alexander Lakhin)
      <ulink url="&commit_baseurl;fd048e0cb">&sect;</ulink>
     </para>

     <para>
      Multi-threaded <application>ecpg</application> applications could
      suffer rare misbehavior due to incorrect locking.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [1e3868ab3] 2020-11-07 15:03:44 -0500
Branch: REL_13_STABLE [1bccb159a] 2020-11-07 15:03:44 -0500
Branch: master [eed4356fa] 2020-11-07 16:25:42 -0500
Branch: REL_13_STABLE [3459f4169] 2020-11-07 16:25:42 -0500
-->
     <para>
      Fix <application>ecpg</application>'s mis-processing
      of <literal>B'...'</literal> and <literal>X'...'</literal> literals
      (Shenhao Wang)
      <ulink url="&commit_baseurl;1bccb159a">&sect;</ulink>
      <ulink url="&commit_baseurl;3459f4169">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [66f8687a8] 2020-10-28 14:35:53 -0400
Branch: REL_13_STABLE [ba4f5413e] 2020-10-28 14:35:53 -0400
Branch: REL_12_STABLE [cb0982ba9] 2020-10-28 14:35:53 -0400
Branch: REL_11_STABLE [9eb250339] 2020-10-28 14:35:53 -0400
Branch: REL_10_STABLE [504f963f7] 2020-10-28 14:35:53 -0400
Branch: REL9_6_STABLE [204d77969] 2020-10-28 14:35:53 -0400
Branch: REL9_5_STABLE [aff06436c] 2020-10-28 14:35:53 -0400
-->
     <para>
      On Windows, make <application>psql</application> read the output of
      a backtick command in text mode, not binary mode (Tom Lane)
      <ulink url="&commit_baseurl;ba4f5413e">&sect;</ulink>
     </para>

     <para>
      This ensures proper handling of newlines.
     </para>
    </listitem>

    <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master [3eb3d3e78] 2020-09-04 13:54:54 -0400
Branch: REL_13_STABLE Release: REL_13_0 [72857482c] 2020-09-04 13:55:11 -0400
Branch: REL_12_STABLE [616110eac] 2020-09-04 13:55:03 -0400
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9e5f1f21a] 2020-10-07 12:51:02 -0400
Branch: REL_13_STABLE [2ea624b4b] 2020-10-07 12:51:03 -0400
Branch: REL_12_STABLE [d8c2a2199] 2020-10-07 12:51:04 -0400
Branch: REL_11_STABLE [f2c6e94f0] 2020-10-07 12:51:05 -0400
Branch: REL_10_STABLE [0c79dcb36] 2020-10-07 12:51:05 -0400
Branch: REL9_6_STABLE [710c0a66d] 2020-10-07 12:51:06 -0400
Branch: REL9_5_STABLE [0bfe356c5] 2020-10-07 12:51:06 -0400
-->
     <para>
      Ensure that <application>pg_dump</application> collects per-column
      information about extension configuration tables (Fabr&iacute;zio de
      Royes Mello, Tom Lane)
      <ulink url="&commit_baseurl;72857482c">&sect;</ulink>
      <ulink url="&commit_baseurl;2ea624b4b">&sect;</ulink>
     </para>

     <para>
      Failure to do this led to crashes when
      specifying <option>--inserts</option>, or underspecified (though
      usually correct) <command>COPY</command> commands when
      using <command>COPY</command> to reload the tables' data.
     </para>
    </listitem>

    <listitem>
<!--
Author: Bruce Momjian <bruce@momjian.us>
Branch: master [3c0471b5f] 2020-10-15 19:33:46 -0400
Branch: REL_13_STABLE [59cfff65b] 2020-10-15 19:33:45 -0400
Branch: REL_12_STABLE [a106236d8] 2020-10-15 19:33:43 -0400
Branch: REL_11_STABLE [eb421c83b] 2020-10-15 19:33:42 -0400
Branch: REL_10_STABLE [85fedf39f] 2020-10-15 19:33:36 -0400
Branch: REL9_6_STABLE [39c23c199] 2020-10-15 19:33:36 -0400
Branch: REL9_5_STABLE [d9ae2297b] 2020-10-15 19:33:36 -0400
Branch: master [536de14e2] 2020-10-15 20:37:20 -0400
Branch: REL_13_STABLE [79fe23465] 2020-10-15 20:37:20 -0400
Branch: REL_12_STABLE [0ab7ca98a] 2020-10-15 20:37:20 -0400
Branch: REL_11_STABLE [16be4e435] 2020-10-15 20:37:19 -0400
Branch: REL_10_STABLE [6e34cc8ab] 2020-10-15 20:37:19 -0400
Branch: REL9_6_STABLE [9dcffe69a] 2020-10-15 20:37:19 -0400
Branch: REL9_5_STABLE [b05672c72] 2020-10-15 20:37:19 -0400
-->
     <para>
      Make <application>pg_upgrade</application> check for pre-existence
      of tablespace directories in the target cluster (Bruce Momjian)
      <ulink url="&commit_baseurl;59cfff65b">&sect;</ulink>
      <ulink url="&commit_baseurl;79fe23465">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
Branch: master [ca2a12c93] 2020-10-19 09:36:56 +0900
Branch: REL_13_STABLE [1bd9b2b23] 2020-10-19 09:37:50 +0900
Branch: REL_12_STABLE [57bdf29dd] 2020-10-19 09:37:55 +0900
Branch: REL_11_STABLE [914139081] 2020-10-19 09:38:01 +0900
Branch: REL_10_STABLE [e8d36f9ec] 2020-10-19 09:38:06 +0900
Branch: REL9_6_STABLE [994a02f7f] 2020-10-19 09:38:13 +0900
Branch: REL9_5_STABLE [099238322] 2020-10-19 09:38:18 +0900
-->
     <para>
      Fix potential memory leak in <filename>contrib/pgcrypto</filename>
      (Michael Paquier)
      <ulink url="&commit_baseurl;1bd9b2b23">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [02a75f836] 2020-10-16 11:59:13 -0400
Branch: REL_13_STABLE [3d338a46a] 2020-10-16 11:59:25 -0400
Branch: REL_12_STABLE [7004ce758] 2020-10-16 11:59:31 -0400
Branch: REL_11_STABLE [1eb2d7e3e] 2020-10-16 11:59:36 -0400
Branch: REL_10_STABLE [3e1a4c260] 2020-10-16 11:59:41 -0400
Branch: REL9_6_STABLE [e15115b4d] 2020-10-16 11:59:47 -0400
Branch: REL9_5_STABLE [9c3032881] 2020-10-16 11:59:52 -0400
-->
     <para>
      Add check for an unlikely failure case
      in <filename>contrib/pgcrypto</filename> (Daniel Gustafsson)
      <ulink url="&commit_baseurl;3d338a46a">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [4a071afbd] 2020-10-29 15:28:14 -0400
Branch: REL_13_STABLE [ee03baad2] 2020-10-29 15:28:28 -0400
Branch: REL_12_STABLE [25b587f03] 2020-10-29 15:28:35 -0400
Branch: REL_11_STABLE [24d769b90] 2020-10-29 15:28:41 -0400
Branch: REL_10_STABLE [c39f4e81d] 2020-10-29 15:28:47 -0400
-->
     <para>
      Fix recently-added <type>timetz</type> test case so it works when
      the USA is not observing daylight savings time (Tom Lane)
      <ulink url="&commit_baseurl;ee03baad2">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c4a803ac7] 2020-10-16 21:53:33 -0400
Branch: REL_13_STABLE [3f26dca76] 2020-10-16 21:53:43 -0400
Branch: REL_12_STABLE [b39c94097] 2020-10-16 21:53:50 -0400
Branch: REL_11_STABLE [2b9166dbc] 2020-10-16 21:53:55 -0400
Branch: REL_10_STABLE [aae4097b0] 2020-10-16 21:54:03 -0400
Branch: REL9_6_STABLE [13dbf4ab8] 2020-10-16 21:54:09 -0400
Branch: REL9_5_STABLE [c8cb243cb] 2020-10-16 21:54:14 -0400
Branch: master [7d6d6bce4] 2020-10-22 21:23:47 -0400
Branch: REL_13_STABLE [96ed2ae93] 2020-10-22 21:24:01 -0400
Branch: REL_12_STABLE [78ccf7f42] 2020-10-22 21:24:07 -0400
Branch: REL_11_STABLE [02f86d523] 2020-10-22 21:24:12 -0400
Branch: REL_10_STABLE [a357cc05d] 2020-10-22 21:24:17 -0400
Branch: REL9_6_STABLE [05a36321a] 2020-10-22 21:24:23 -0400
Branch: REL9_5_STABLE [0abebb58f] 2020-10-22 21:24:28 -0400
-->
     <para>
      Update time zone data files to <application>tzdata</application>
      release 2020d for DST law changes in Fiji, Morocco, Palestine, the
      Canadian Yukon, Macquarie Island, and Casey Station (Antarctica);
      plus historical corrections for France, Hungary, Monaco, and
      Palestine. (Tom Lane)
      <ulink url="&commit_baseurl;3f26dca76">&sect;</ulink>
      <ulink url="&commit_baseurl;96ed2ae93">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ce0e97f80] 2020-10-16 21:40:16 -0400
Branch: REL_13_STABLE [e0cf5e9b2] 2020-10-16 21:40:16 -0400
Branch: REL_12_STABLE [3d13a8307] 2020-10-16 21:40:16 -0400
Branch: REL_11_STABLE [4a2528bfa] 2020-10-16 21:40:16 -0400
Branch: REL_10_STABLE [41eeeb348] 2020-10-16 21:40:16 -0400
Branch: REL9_6_STABLE [5515c73a6] 2020-10-16 21:40:16 -0400
Branch: REL9_5_STABLE [38fac9c1f] 2020-10-16 21:40:16 -0400
Branch: master [c5054da0d] 2020-10-22 21:15:22 -0400
Branch: REL_13_STABLE [0e551533b] 2020-10-22 21:15:37 -0400
Branch: REL_12_STABLE [f56c42e50] 2020-10-22 21:16:04 -0400
Branch: REL_11_STABLE [d2ffe0a00] 2020-10-22 21:16:16 -0400
Branch: REL_10_STABLE [34285083b] 2020-10-22 21:16:23 -0400
Branch: REL9_6_STABLE [58f9f52a3] 2020-10-22 21:16:31 -0400
Branch: REL9_5_STABLE [ff26f804a] 2020-10-22 21:16:38 -0400
-->
     <para>
      Sync our copy of the timezone library with IANA tzcode release 2020d
      (Tom Lane)
      <ulink url="&commit_baseurl;e0cf5e9b2">&sect;</ulink>
      <ulink url="&commit_baseurl;0e551533b">&sect;</ulink>
     </para>

     <para>
      This absorbs upstream's change of <application>zic</application>'s
      default output option from <quote>fat</quote>
      to <quote>slim</quote>.  That's just cosmetic for our purposes, as
      we continue to select the <quote>fat</quote> mode in pre-v13
      branches.  This change also ensures
      that <function>strftime()</function> does not
      change <varname>errno</varname> unless it fails.
     </para>
    </listitem>

   </itemizedlist>

  </sect2>
 </sect1>

 <sect1 id="release-13">
  <title>Release 13</title>

  <formalpara>
   <title>Release date:</title>
   <para>2020-09-24</para>
  </formalpara>

  <sect2>
   <title>Overview</title>

   <para>
    <productname>PostgreSQL</productname> 13 contains many new features and
    enhancements, including:
   </para>

   <itemizedlist>
    <listitem>
     <para>
      Space savings and performance gains from de-duplication of B-tree
      index entries
     </para>
    </listitem>
    <listitem>
     <para>
      Improved performance for queries that use aggregates or partitioned
      tables
     </para>
    </listitem>
    <listitem>
     <para>
      Better query planning when using extended statistics
     </para>
    </listitem>
    <listitem>
     <para>
      Parallelized vacuuming of indexes
     </para>
    </listitem>
    <listitem>
     <para>
      Incremental sorting
     </para>
    </listitem>
   </itemizedlist>

   <para>
    The above items and other new features
    of <productname>PostgreSQL</productname> 13 are explained in more
    detail in the sections below.
   </para>

  </sect2>

  <sect2>

  <title>Migration to Version 13</title>

    <para>
     A dump/restore using <xref linkend="app-pg-dumpall"/> or use of <xref
     linkend="pgupgrade"/> or logical replication is required for those
     wishing to migrate data from any previous release.  See <xref
     linkend="upgrading"/> for general information on migrating to new major
     releases.
    </para>

    <para>
     Version 13 contains a number of changes that may affect compatibility
     with previous releases.  Observe the following incompatibilities:
    </para>

   <itemizedlist>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-09-07 [ca70bdaef] Fix issues around strictness of SIMILAR TO.
-->

     <para>
      Change <link linkend="functions-similarto-regexp"><command>SIMILAR
      TO ... ESCAPE NULL</command></link> to return <literal>NULL</literal>
      (Tom Lane)
      <ulink url="&commit_baseurl;ca70bdaef">&sect;</ulink>
     </para>

     <para>
      This new behavior matches the <acronym>SQL</acronym> specification.
      Previously a null <literal>ESCAPE</literal> value was taken to mean
      using the default escape string (a backslash character).  This also
      applies to <literal>substring(<replaceable>text</replaceable>
      FROM <replaceable>pattern</replaceable>
      ESCAPE <replaceable>text</replaceable>)</literal>.  The previous
      behavior has been retained in old views by keeping the original
      function unchanged.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-01-31 [870ad6a59] Fix not-quite-right string comparison in parse_jsonb_ind
-->

     <para>
      Make <link
      linkend="textsearch-functions-table"><function>json[b]_to_tsvector()</function></link>
      fully check the spelling of its <literal>string</literal> option
      (Dominik Czarnota)
      <ulink url="&commit_baseurl;870ad6a59">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
2020-03-16 [b09ff5366] Simplify the effective_io_concurrency setting.
-->

     <para>
      Change the way non-default <xref
      linkend="guc-effective-io-concurrency"/> values affect concurrency
      (Thomas Munro)
      <ulink url="&commit_baseurl;b09ff5366">&sect;</ulink>
     </para>

     <para>
      Previously, this value was adjusted before setting the number of
      concurrent requests.  The value is now used directly.  Conversion of
      old values to new ones can be done using:
     </para>

<programlisting>
SELECT round(sum(<replaceable>OLDVALUE</replaceable> / n::float)) AS newvalue FROM generate_series(1, <replaceable>OLDVALUE</replaceable>) s(n);
</programlisting>
    </listitem>

    <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2019-11-12 [5c46e7d82] pg_stat_{ssl,gssapi}: Show only processes with connectio
-->

     <para>
      Prevent display of auxiliary processes in <xref
      linkend="pg-stat-ssl-view"/> and <xref linkend="pg-stat-gssapi-view"/>
      system views (Euler Taveira)
      <ulink url="&commit_baseurl;5c46e7d82">&sect;</ulink>
     </para>

     <para>
      Queries that join these views to <xref
      linkend="pg-stat-activity-view"/> and wish to see auxiliary processes
      will need to use left joins.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2020-03-19 [1d253bae5] Rename the recovery-related wait events.
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-05-15 [36ac359d3] Rename assorted LWLock tranches.
2020-05-15 [474e7da64] Change locktype "speculative token" to "spectoken".
2020-05-15 [14a910109] Drop the redundant "Lock" suffix from LWLock wait event
2020-05-16 [3048898e7] Mop-up for wait event naming issues.
-->

     <para>
      Rename various <link linkend="wait-event-table">wait
      events</link> to improve consistency (Fujii Masao, Tom Lane)
      <ulink url="&commit_baseurl;1d253bae5">&sect;</ulink>
      <ulink url="&commit_baseurl;36ac359d3">&sect;</ulink>
      <ulink url="&commit_baseurl;474e7da64">&sect;</ulink>
      <ulink url="&commit_baseurl;14a910109">&sect;</ulink>
      <ulink url="&commit_baseurl;3048898e7">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2019-11-06 [979766c0a] Correct the command tags for ALTER ... RENAME COLUMN.
-->

     <para>
      Fix <link linkend="sql-alterforeigntable"><command>ALTER FOREIGN
      TABLE ... RENAME COLUMN</command></link> to return a more appropriate
      command tag (Fujii Masao)
      <ulink url="&commit_baseurl;979766c0a">&sect;</ulink>
     </para>

     <para>
      Previously it returned <command>ALTER TABLE</command>; now it returns
      <command>ALTER FOREIGN TABLE</command>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2019-11-06 [979766c0a] Correct the command tags for ALTER ... RENAME COLUMN.
-->

     <para>
      Fix <link linkend="sql-altermaterializedview"><command>ALTER
      MATERIALIZED VIEW ... RENAME COLUMN</command></link> to return a more
      appropriate command tag (Fujii Masao)
      <ulink url="&commit_baseurl;979766c0a">&sect;</ulink>
     </para>

     <para>
      Previously it returned <command>ALTER TABLE</command>; now it returns
      <command>ALTER MATERIALIZED VIEW</command>.
     </para>
    </listitem>

    <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2020-07-20 [f5dff45962] Rename wal_keep_segments to wal_keep_size.
-->

     <para>
      Rename configuration parameter <varname>wal_keep_segments</varname>
      to <xref linkend="guc-wal-keep-size"/> (Fujii Masao)
      <ulink url="&commit_baseurl;f5dff45962">&sect;</ulink>
     </para>

     <para>
      This determines how much WAL to retain for standby servers.
      It is specified in megabytes, rather than number of files as with
      the old parameter. If you
      previously used <varname>wal_keep_segments</varname>,
      the following formula will give you an approximately equivalent setting:
<programlisting>
wal_keep_size = wal_keep_segments * wal_segment_size (typically 16MB)
</programlisting>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-03-05 [84eca14bc] Remove ancient hacks to ignore certain opclass names in
-->

     <para>
      Remove support for defining <link linkend="sql-createopclass">operator
      classes</link> using pre-<productname>PostgreSQL</productname>
      8.0 syntax (Daniel Gustafsson)
      <ulink url="&commit_baseurl;84eca14bc">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-03-05 [e58a59975] Remove ancient support for upgrading pre-7.3 foreign key
-->

     <para>
      Remove support for defining <link linkend="sql-altertable">foreign key
      constraints</link> using pre-<productname>PostgreSQL</productname>
      7.3 syntax (Daniel Gustafsson)
      <ulink url="&commit_baseurl;e58a59975">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-03-05 [bb03010b9] Remove the "opaque" pseudo-type and associated compatibi
-->

     <para>
      Remove support for "opaque" <link
      linkend="sql-createtype">pseudo-types</link> used by
      pre-<productname>PostgreSQL</productname> 7.3 servers (Daniel
      Gustafsson)
      <ulink url="&commit_baseurl;bb03010b9">&sect;</ulink>
     </para>
    </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-02-19 [70a773200] Remove support for upgrading extensions from "unpackaged
-->

      <para>
       Remove support for upgrading unpackaged (pre-9.1) extensions (Tom Lane)
       <ulink url="&commit_baseurl;70a773200">&sect;</ulink>
      </para>

      <para>
       The <literal>FROM</literal> option
       of <link linkend="sql-createextension"><command>CREATE
       EXTENSION</command></link> is no longer supported.  Any installations
       still using unpackaged extensions should upgrade them to a packaged
       version before updating to <productname>PostgreSQL</productname> 13.
      </para>
     </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-06-29 [21aac2ff9] Remove support for timezone "posixrules" file.
-->

     <para>
      Remove support for <filename>posixrules</filename> files in the
      timezone database (Tom Lane)
      <ulink url="&commit_baseurl;21aac2ff9">&sect;</ulink>
     </para>

     <para>
      IANA's timezone group has deprecated this feature, meaning that it
      will gradually disappear from systems' timezone databases over the
      next few years.  Rather than have a behavioral change appear
      unexpectedly with a timezone data update, we have
      removed <productname>PostgreSQL</productname>'s support for this
      feature as of version 13.  This affects only the behavior
      of <link linkend="datetime-posix-timezone-specs">POSIX-style time
      zone specifications</link> that lack an explicit daylight savings
      transition rule; formerly the transition rule could be determined
      by installing a custom <filename>posixrules</filename> file, but
      now it is hard-wired.  The recommended fix for any affected
      installations is to start using a geographical time zone name.
     </para>
    </listitem>

    <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-03-28 [9950c8aad] Fix lquery's behavior for consecutive '*' items.
-->

     <para>
      In <xref linkend="ltree"/>, when an <type>lquery</type> pattern
      contains adjacent asterisks with braces,
      e.g., <literal>*{2}.*{3}</literal>, properly interpret that
      as <literal>*{5}</literal> (Nikita Glukhov)
      <ulink url="&commit_baseurl;9950c8aad">&sect;</ulink>
     </para>
    </listitem>

    <listitem>
<!--
Author: Peter Geoghegan <pg@bowt.ie>
2020-03-07 [691e8b2e1] pageinspect: Fix types used for bt_metap() columns.
-->

     <para>
      Fix <xref linkend="pageinspect"/>'s <function>bt_metap()</function>
      to return more appropriate data types that are less likely to overflow
      (Peter Geoghegan)
      <ulink url="&commit_baseurl;691e8b2e1">&sect;</ulink>
     </para>
    </listitem>

   </itemizedlist>

  </sect2>

  <sect2>
   <title>Changes</title>

     <para>
       Below you will find a detailed account of the changes between
       <productname>PostgreSQL</productname> 13 and the previous major
       release.
     </para>

   <sect3>
    <title>Server</title>

    <sect4>
     <title><link linkend="ddl-partitioning">Partitioning</link></title>

     <itemizedlist>

      <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2019-08-07 [4e85642d9] Apply constraint exclusion more generally in partitionin
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2019-08-13 [815ef2f56] Don't constraint-exclude partitioned tables as much
-->

       <para>
        Allow <link linkend="ddl-partition-pruning">pruning</link> of
        partitions to happen in more cases
        (Yuzuko Hosoya, Amit Langote, &Aacute;lvaro Herrera)
        <ulink url="&commit_baseurl;4e85642d9">&sect;</ulink>
        <ulink url="&commit_baseurl;815ef2f56">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Etsuro Fujita <efujita@postgresql.org>
2020-04-08 [c8434d64c] Allow partitionwise joins in more cases.
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-04-07 [981643dcd] Allow partitionwise join to handle nested FULL JOIN USIN
-->

      <para>
       Allow <link linkend="guc-enable-partitionwise-join">partitionwise
       joins</link> to happen in more cases (Ashutosh Bapat, Etsuro Fujita,
       Amit Langote, Tom Lane)
       <ulink url="&commit_baseurl;c8434d64c">&sect;</ulink>
       <ulink url="&commit_baseurl;981643dcd">&sect;</ulink>
      </para>

       <para>
        For example, partitionwise joins can now happen between partitioned
        tables even when their partition bounds do not match exactly.
       </para>
      </listitem>

      <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2020-03-18 [487e9861d] Enable BEFORE row-level triggers for partitioned tables
-->

       <para>
        Support row-level <literal>BEFORE</literal> <link
        linkend="triggers">triggers</link> on partitioned tables (&Aacute;lvaro
        Herrera)
        <ulink url="&commit_baseurl;487e9861d">&sect;</ulink>
       </para>

       <para>
        However, such a trigger is not allowed to change which partition
        is the destination.
       </para>
      </listitem>

      <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2020-03-10 [17b9e7f9f] Support adding partitioned tables to publication
Author: Peter Eisentraut <peter@eisentraut.org>
2020-04-08 [83fd4532a] Allow publishing partition changes via ancestors
-->

       <para>
        Allow partitioned tables to be logically replicated via <link
        linkend="sql-createpublication">publications</link> (Amit Langote)
        <ulink url="&commit_baseurl;17b9e7f9f">&sect;</ulink>
        <ulink url="&commit_baseurl;83fd4532a">&sect;</ulink>
       </para>

       <para>
        Previously, partitions had to be replicated individually.  Now a
        partitioned table can be published explicitly, causing all its
        partitions to be published automatically.  Addition/removal of a
        partition causes it to be likewise added to or removed from the
        publication.
        The <link linkend="sql-createpublication"><command>CREATE
        PUBLICATION</command></link> option
        <literal>publish_via_partition_root</literal> controls whether changes
        to partitions are published as their own changes or their parent's.
       </para>
      </listitem>

      <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2020-04-06 [f1ac27bfd] Add logical replication support to replicate into partit
-->

       <para>
        Allow logical replication into partitioned tables on subscribers
        (Amit Langote)
        <ulink url="&commit_baseurl;f1ac27bfd">&sect;</ulink>
       </para>

       <para>
        Previously, subscribers could only receive rows into non-partitioned
        tables.
       </para>
      </listitem>

      <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-12-25 [bb4114a4e] Allow whole-row Vars to be used in partitioning expressi
-->

       <para>
        Allow whole-row variables (that
        is, <replaceable>table</replaceable><literal>.*</literal>) to be
        used in partitioning expressions (Amit Langote)
        <ulink url="&commit_baseurl;bb4114a4e">&sect;</ulink>
       </para>
      </listitem>

     </itemizedlist>

    </sect4>

    <sect4>
     <title>Indexes</title>

     <itemizedlist>

      <listitem>
<!--
Author: Peter Geoghegan <pg@bowt.ie>
2020-02-26 [0d861bbb7] Add deduplication to nbtree.
-->

       <para>
        More efficiently store <link
        linkend="btree-deduplication">duplicates</link> in B-tree indexes
        (Anastasia Lubennikova, Peter Geoghegan)
        <ulink url="&commit_baseurl;0d861bbb7">&sect;</ulink>
       </para>

       <para>
        This allows efficient B-tree indexing of low-cardinality columns
        by storing duplicate keys only once.  Users upgrading with <link
        linkend="pgupgrade"><application>pg_upgrade</application></link>
        will need to use <link
        linkend="sql-reindex"><command>REINDEX</command></link> to make an
        existing index use this feature.
       </para>
      </listitem>

      <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
2019-07-14 [c085e1c1c] Add support for <-> (box, point) operator to GiST box_op
Author: Alexander Korotkov <akorotkov@postgresql.org>
2019-07-14 [075f0a880] Add support for <-> (box, point) operator to SP-GiST box
-->

       <para>
        Allow <link linkend="gist">GiST</link> and <link
        linkend="spgist">SP-GiST</link> indexes on <type>box</type>
        columns to support <literal>ORDER BY <replaceable>box</replaceable>
        &lt;-&gt; <replaceable>point</replaceable></literal> queries (Nikita
        Glukhov)
        <ulink url="&commit_baseurl;c085e1c1c">&sect;</ulink>
        <ulink url="&commit_baseurl;075f0a880">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
2020-01-18 [4b754d6c1] Avoid full scan of GIN indexes when possible
-->

       <para>
        Allow <link linkend="gin"><acronym>GIN</acronym></link> indexes to
        more efficiently handle <literal>!</literal> (NOT) clauses
        in <type>tsquery</type> searches (Nikita
        Glukhov, Alexander Korotkov, Tom Lane, Julien Rouhaud)
        <ulink url="&commit_baseurl;4b754d6c1">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
2020-03-30 [911e70207] Implement operator class parameters
-->

       <para>
        Allow <link linkend="sql-createindex">index operator classes</link>
        to take parameters (Nikita Glukhov)
        <ulink url="&commit_baseurl;911e70207">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
2020-03-30 [911e70207] Implement operator class parameters
-->

       <para>
        Allow <command>CREATE INDEX</command> to specify the GiST signature
        length and maximum number of integer ranges (Nikita Glukhov)
        <ulink url="&commit_baseurl;911e70207">&sect;</ulink>
       </para>

       <para>
        Indexes created on four and eight-byte <link linkend="intarray">integer
        array</link>, <link linkend="textsearch">tsvector</link>,
        <xref linkend="pgtrgm"/>, <xref linkend="ltree"/>, and <xref
        linkend="hstore"/> columns can now control these GiST index parameters,
        rather than using the defaults.
       </para>
      </listitem>

      <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-12-06 [fbbf68094] Disallow non-default collation in ADD PRIMARY KEY/UNIQUE
-->

       <para>
        Prevent indexes that use non-default collations from being <link
        linkend="sql-altertable">added</link> as a table's unique or primary
        key constraint (Tom Lane)
        <ulink url="&commit_baseurl;fbbf68094">&sect;</ulink>
       </para>

       <para>
        The index's collation must match that of the underlying column,
        but <command>ALTER TABLE</command> previously failed to check
        this.
       </para>
      </listitem>


     </itemizedlist>

    </sect4>

    <sect4>
     <title>Optimizer</title>

     <itemizedlist>

      <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-04-01 [a80818605] Improve selectivity estimation for assorted match-style
-->

       <para>
        Improve the optimizer's <link
        linkend="planner-stats-details">selectivity</link> estimation for
        containment/match operators (Tom Lane)
        <ulink url="&commit_baseurl;a80818605">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
2019-09-11 [d06215d03] Allow setting statistics target for extended statistics
-->

       <para>
        Allow setting the <link linkend="sql-altertable">statistics target</link>
        for <link linkend="sql-createstatistics">extended statistics</link>
        (Tomas Vondra)
        <ulink url="&commit_baseurl;d06215d03">&sect;</ulink>
       </para>

       <para>
        This is controlled with the new command option <command>ALTER
        STATISTICS ... SET STATISTICS</command>.  Previously this was computed
        based on more general statistics target settings.
       </para>
      </listitem>

      <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
2020-01-13 [aaa676187] Apply all available functional dependencies
Author: Tomas Vondra <tomas.vondra@postgresql.org>
2020-01-13 [eae056c19] Apply multiple multivariate MCV lists when possible
-->

       <para>
        Allow use of multiple extended statistics objects in a single query
        (Tomas Vondra)
        <ulink url="&commit_baseurl;aaa676187">&sect;</ulink>
        <ulink url="&commit_baseurl;eae056c19">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
2020-03-14 [8f321bd16] Use functional dependencies to estimate ScalarArrayOpExp
Author: Tomas Vondra <tomas.vondra@postgresql.org>
2020-03-14 [e83daa7e3] Use multi-variate MCV lists to estimate ScalarArrayOpExp
Author: Tomas Vondra <tomas.vondra@postgresql.org>
2020-03-18 [ccaa3569f] Recognize some OR clauses as compatible with functional
-->

       <para>
        Allow use of extended statistics objects for OR clauses and <link
        linkend="functions-subquery">IN</link>/<literal>ANY</literal> constant
        lists (Pierre Ducroquet, Tomas Vondra)
        <ulink url="&commit_baseurl;8f321bd16">&sect;</ulink>
        <ulink url="&commit_baseurl;e83daa7e3">&sect;</ulink>
        <ulink url="&commit_baseurl;ccaa3569f">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-08-01 [7266d0997] Allow functions-in-FROM to be pulled up if they reduce t
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-09-24 [a9ae99d01] Prevent bogus pullup of constant-valued functions return
-->

       <para>
        Allow functions in <literal>FROM</literal> clauses to be pulled up
        (inlined) if they evaluate to constants (Alexander Kuzmenkov,
        Aleksandr Parfenov)
        <ulink url="&commit_baseurl;7266d0997">&sect;</ulink>
        <ulink url="&commit_baseurl;a9ae99d01">&sect;</ulink>
       </para>
      </listitem>

     </itemizedlist>

    </sect4>

    <sect4>
     <title>General Performance</title>

     <itemizedlist>

      <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
2020-04-06 [d2d8a229b] Implement Incremental Sort
Author: Peter Eisentraut <peter@eisentraut.org>
2020-07-05 [94e454cdd] Rename enable_incrementalsort for clarity
-->

       <para>
        Implement <link linkend="guc-enable-incremental-sort">incremental
        sorting</link> (James Coleman, Alexander Korotkov, Tomas Vondra)
        <ulink url="&commit_baseurl;d2d8a229b">&sect;</ulink>
        <ulink url="&commit_baseurl;94e454cdd">&sect;</ulink>
       </para>

       <para>
        If an intermediate query result is known to be sorted by
        one or more leading keys of a required sort ordering, the
        additional sorting can be done considering only the remaining
        keys, if the rows are sorted in batches that have equal leading
        keys.
       </para>

       <para>
        If necessary, this can be controlled using <xref
        linkend="guc-enable-incremental-sort"/>.
       </para>
      </listitem>

      <listitem>
<!--
Author: Peter Geoghegan <pg@bowt.ie>
2019-08-01 [71dcd7438] Add sort support routine for the inet data type.
-->

       <para>
        Improve the performance of sorting <link
        linkend="datatype-inet">inet</link> values (Brandur Leach)
        <ulink url="&commit_baseurl;71dcd7438">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Jeff Davis <jdavis@postgresql.org>
2020-03-18 [1f39bce02] Disk-based Hash Aggregation.
Author: Jeff Davis <jdavis@postgresql.org>
2020-03-24 [dd8e19132] Consider disk-based hash aggregation to implement DISTIN
Author: Peter Geoghegan <pg@bowt.ie>
2020-07-29 [78530c8e7] Add hash_mem_multiplier GUC.
-->

       <para>
        Allow <link linkend="guc-enable-hashagg">hash aggregation</link>
        to use disk storage for large aggregation result sets (Jeff Davis)
        <ulink url="&commit_baseurl;1f39bce02">&sect;</ulink>
        <ulink url="&commit_baseurl;dd8e19132">&sect;</ulink>
        <ulink url="&commit_baseurl;78530c8e7">&sect;</ulink>
       </para>

       <para>
        Previously, hash aggregation was avoided if it was expected to use
        more than <xref linkend="guc-work-mem"/> memory.  Now, a hash
        aggregation plan can be chosen despite that.  The hash table will
        be spilled to disk if it exceeds <varname>work_mem</varname> times
        <xref linkend="guc-hash-mem-multiplier"/>.
       </para>

       <para>
        This behavior is normally preferable to the old behavior, in which
        once hash aggregation had been chosen, the hash table would be
        kept in memory no matter how large it got &mdash; which could be
        very large if the planner had misestimated.  If necessary,
        behavior similar to that can be obtained by
        increasing <varname>hash_mem_multiplier</varname>.
       </para>
      </listitem>

      <listitem>
<!--
Author: David Rowley <drowley@postgresql.org>
2020-03-28 [b07642dbc] Trigger autovacuum based on number of INSERTs
-->

       <para>
        Allow inserts, not only updates and deletes, to trigger vacuuming
        activity in <link linkend="autovacuum">autovacuum</link>
        (Laurenz Albe, Darafei Praliaskouski)
        <ulink url="&commit_baseurl;b07642dbc">&sect;</ulink>
       </para>

       <para>
        Previously, insert-only activity would trigger auto-analyze but
        not auto-vacuum, on the grounds that there could not be any dead
        tuples to remove.  However, a vacuum scan has other useful
        side-effects such as setting page-all-visible bits, which improves
        the efficiency of index-only scans.  Also, allowing an insert-only
        table to receive periodic vacuuming helps to spread out the work
        of <quote>freezing</quote> old tuples, so that there is not
        suddenly a large amount of freezing work to do when the entire
        table reaches the anti-wraparound threshold all at once.
       </para>

       <para>
        If necessary, this behavior can be adjusted with the new
        parameters <xref linkend="guc-autovacuum-vacuum-insert-threshold"/>
        and <xref linkend="guc-autovacuum-vacuum-insert-scale-factor"/>, or
        the equivalent table storage options.
       </para>
      </listitem>

      <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
2020-03-16 [fc34b0d9d] Introduce a maintenance_io_concurrency setting.
-->

       <para>
        Add <xref linkend="guc-maintenance-io-concurrency"/> parameter to
        control I/O concurrency for maintenance operations (Thomas Munro)
        <ulink url="&commit_baseurl;fc34b0d9d">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
2020-04-04 [c6b92041d] Skip WAL for new relfilenodes, under wal_level=minimal.
-->

       <para>
        Allow <acronym>WAL</acronym> writes to be skipped during a transaction
        that creates or rewrites a relation, if <xref
        linkend="guc-wal-level"/> is <literal>minimal</literal> (Kyotaro
        Horiguchi)
        <ulink url="&commit_baseurl;c6b92041d">&sect;</ulink>
       </para>

       <para>
        Relations larger than <xref linkend="guc-wal-skip-threshold"/>
        will have their files fsync'ed rather than generating
        <acronym>WAL</acronym>.  Previously this was done only for
        <command>COPY</command> operations, but the implementation had a bug
        that could cause data loss during crash recovery.
       </para>
      </listitem>

      <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2019-11-21 [e6d806952] Make DROP DATABASE command generate less WAL records.
-->

       <para>
        Improve performance when replaying <link
        linkend="sql-dropdatabase"><command>DROP DATABASE</command></link>
        commands when many tablespaces are in use (Fujii Masao)
        <ulink url="&commit_baseurl;e6d806952">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2019-09-24 [6d05086c0] Speedup truncations of relation forks.
-->

       <para>
        Improve performance for <link linkend="sql-truncate">truncation</link>
        of very large relations (Kirk Jamison)
        <ulink url="&commit_baseurl;6d05086c0">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
2019-10-01 [11a078cf8] Optimize partial TOAST decompression
-->

       <para>
        Improve retrieval of the leading bytes of <link
        linkend="storage-toast"><acronym>TOAST</acronym></link>'ed values
        (Binguo Bao, Andrey Borodin)
        <ulink url="&commit_baseurl;11a078cf8">&sect;</ulink>
       </para>

       <para>
        Previously, compressed out-of-line <acronym>TOAST</acronym> values
        were fully fetched even when it's known that only some leading
        bytes are needed.  Now, only enough data to produce the result is
        fetched.
       </para>
      </listitem>

      <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-09-10 [bca6e6435] Reduce overhead of scanning the backend[] array in LISTE
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-09-22 [51004c717] Make some efficiency improvements in LISTEN/NOTIFY.
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-08-15 [bb5ae8f6c] Use a hash table to de-duplicate NOTIFY events faster.
-->

       <para>
        Improve performance of <link
        linkend="sql-listen"><command>LISTEN</command></link>/<command>NOTIFY</command>
        (Martijn van Oosterhout, Tom Lane)
        <ulink url="&commit_baseurl;bca6e6435">&sect;</ulink>
        <ulink url="&commit_baseurl;51004c717">&sect;</ulink>
        <ulink url="&commit_baseurl;bb5ae8f6c">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Andrew Gierth <rhodiumtoad@postgresql.org>
2020-02-01 [1fd687a03] Optimizations for integer to decimal output.
-->

       <para>
        Speed up conversions of integers to text (David Fetter)
        <ulink url="&commit_baseurl;1fd687a03">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-07-10 [b5810de3f] Reduce memory consumption for multi-statement query stri
-->

       <para>
        Reduce memory usage for query strings and extension scripts that
        contain many <acronym>SQL</acronym> statements (Amit Langote)
        <ulink url="&commit_baseurl;b5810de3f">&sect;</ulink>
       </para>
      </listitem>

     </itemizedlist>

    </sect4>

    <sect4>
     <title>Monitoring</title>

     <itemizedlist>

      <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
2020-04-05 [6b466bf5f] Allow pg_stat_statements to track WAL usage statistics.
Author: Amit Kapila <akapila@postgresql.org>
2020-04-06 [33e05f89c] Add the option to report WAL usage in EXPLAIN and auto_e
Author: Amit Kapila <akapila@postgresql.org>
2020-04-06 [b7ce6de93] Allow autovacuum to log WAL usage statistics.
-->

       <para>
        Allow <link linkend="sql-explain"><command>EXPLAIN</command></link>,
        <xref linkend="auto-explain"/>, <link
        linkend="autovacuum">autovacuum</link>, and <xref
        linkend="pgstatstatements"/> to track <acronym>WAL</acronym> usage
        statistics (Kirill Bychik, Julien Rouhaud)
        <ulink url="&commit_baseurl;6b466bf5f">&sect;</ulink>
        <ulink url="&commit_baseurl;33e05f89c">&sect;</ulink>
        <ulink url="&commit_baseurl;b7ce6de93">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
2019-11-06 [6e3e6cc0e] Allow sampling of statements depending on duration
-->

       <para>
        Allow a sample of SQL statements, rather than all statements, to
        be logged (Adrien Nayrat)
        <ulink url="&commit_baseurl;6e3e6cc0e">&sect;</ulink>
       </para>

       <para>
        A <xref linkend="guc-log-statement-sample-rate"/> fraction of
        those statements taking more than
        <xref linkend="guc-log-min-duration-sample"/> duration will be
        logged.
       </para>
      </listitem>

      <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2020-03-15 [70a7b4776] Add backend type to csvlog and optionally log_line_prefi
-->

       <para>
        Add the backend type to <link
        linkend="runtime-config-logging">csvlog</link> and optionally <xref
        linkend="guc-log-line-prefix"/> log output (Peter Eisentraut)
        <ulink url="&commit_baseurl;70a7b4776">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2019-12-11 [ba79cb5dc] Emit parameter values during query bind/execute errors
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-04-02 [0b34e7d30] Improve user control over truncation of logged bind-para
-->

       <para>
        Improve control of prepared statement parameter logging (Alexey
        Bashtanov, &Aacute;lvaro Herrera)
        <ulink url="&commit_baseurl;ba79cb5dc">&sect;</ulink>
        <ulink url="&commit_baseurl;0b34e7d30">&sect;</ulink>
       </para>

       <para>
        The <acronym>GUC</acronym> setting <xref
        linkend="guc-log-parameter-max-length"/> controls the maximum length
        of parameter values output during logging of non-error statements,
        while <xref linkend="guc-log-parameter-max-length-on-error"/> does
        the same for logging of statements with errors.  Previously,
        prepared statement parameters were never logged during errors.
       </para>
      </listitem>

      <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2019-11-08 [71a8a4f6e] Add backtrace support for error reporting
Author: Peter Eisentraut <peter@eisentraut.org>
2020-07-10 [8ff4d1277] Log the location field before any backtrace
-->

       <para>
        Allow function call backtraces to be logged after errors (Peter
        Eisentraut, &Aacute;lvaro Herrera)
        <ulink url="&commit_baseurl;71a8a4f6e">&sect;</ulink>
        <ulink url="&commit_baseurl;8ff4d1277">&sect;</ulink>
       </para>

       <para>
        The new parameter <xref linkend="guc-backtrace-functions"/> specifies
        which C functions should generate backtraces on error.
       </para>
      </listitem>

      <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2020-02-05 [15d13e829] Make vacuum buffer counters 64 bits wide
-->

       <para>
        Make <link linkend="sql-vacuum">vacuum</link> buffer counters 64-bits
        wide to avoid overflow (&Aacute;lvaro Herrera)
        <ulink url="&commit_baseurl;15d13e829">&sect;</ulink>
       </para>
      </listitem>

     </itemizedlist>

    </sect4>

    <sect4>
     <title>System Views</title>

     <itemizedlist>

      <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
2020-02-06 [b025f32e0] Add leader_pid to pg_stat_activity
-->

       <para>
        Add <structfield>leader_pid</structfield> to <xref
        linkend="pg-stat-activity-view"/> to report a parallel worker's
        leader process (Julien Rouhaud)
        <ulink url="&commit_baseurl;b025f32e0">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2020-03-03 [e65497df8] Report progress of streaming base backup.
-->

       <para>
        Add system view <link
        linkend="basebackup-progress-reporting"><structname>pg_stat_progress_basebackup</structname></link>
        to report the progress of streaming base backups (Fujii Masao)
        <ulink url="&commit_baseurl;e65497df8">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2020-01-15 [a166d408e] Report progress of ANALYZE commands
-->

       <para>
        Add system view <link
        linkend="monitoring-stats-dynamic-views-table"><structname>pg_stat_progress_analyze</structname></link>
        to report <link linkend="sql-analyze">ANALYZE</link> progress
        (&Aacute;lvaro Herrera, Tatsuro Yamada, Vinayak Pokale)
        <ulink url="&commit_baseurl;a166d408e">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
2020-01-09 [ed10f32e3] Add pg_shmem_allocations view.
-->

       <para>
        Add system view <link
        linkend="view-pg-shmem-allocations"><structname>pg_shmem_allocations</structname></link>
        to display shared memory usage (Andres Freund, Robert Haas)
        <ulink url="&commit_baseurl;ed10f32e3">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Tomas Vondra <tomas.vondra@postgresql.org>
2020-04-02 [28cac71bd] Collect statistics about SLRU caches
-->

       <para>
        Add system view <link
        linkend="monitoring-stats-views-table"><structname>pg_stat_slru</structname></link>
        to monitor internal <acronym>SLRU</acronym> caches
        (Tomas Vondra)
        <ulink url="&commit_baseurl;28cac71bd">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
2020-01-07 [814727858] Increase the maximum value of track_activity_query_size.
-->

       <para>
        Allow <xref linkend="guc-track-activity-query-size"/> to be set as
        high as 1MB (Vyacheslav Makarov)
        <ulink url="&commit_baseurl;814727858">&sect;</ulink>
       </para>

       <para>
        The previous maximum was 100kB.
       </para>
      </listitem>

     </itemizedlist>

    </sect4>

    <sect4>
     <title><link linkend="wait-event-table">Wait Events</link></title>

     <itemizedlist>

      <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
2020-01-31 [ef02fb15a] Report time spent in posix_fallocate() as a wait event.
-->

       <para>
        Report a wait event while creating a DSM segment
        with <function>posix_fallocate()</function> (Thomas Munro)
        <ulink url="&commit_baseurl;ef02fb15a">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
2020-03-23 [cedffbdb8] Report wait event for cost-based vacuum delay.
-->

       <para>
        Add wait event VacuumDelay to report on cost-based vacuum delay
        (Justin Pryzby)
        <ulink url="&commit_baseurl;cedffbdb8">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2020-03-24 [b8e20d6da] Add wait events for WAL archive and recovery pause.
-->

       <para>
        Add wait events for <acronym>WAL</acronym> archive and recovery pause
        (Fujii Masao)
        <ulink url="&commit_baseurl;b8e20d6da">&sect;</ulink>
       </para>

       <para>
        The new events are BackupWaitWalArchive and RecoveryPause.
       </para>
      </listitem>

      <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2020-04-03 [18808f8c8] Add wait events for recovery conflicts.
-->

       <para>
        Add  wait events RecoveryConflictSnapshot and
        RecoveryConflictTablespace to monitor recovery conflicts (Masahiko
        Sawada)
        <ulink url="&commit_baseurl;18808f8c8">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
2020-02-05 [815c2f097] Add kqueue(2) support to the WaitEventSet API.
-->

       <para>
        Improve performance of wait events on <acronym>BSD</acronym>-based
        systems (Thomas Munro)
        <ulink url="&commit_baseurl;815c2f097">&sect;</ulink>
       </para>
      </listitem>

     </itemizedlist>

    </sect4>

    <sect4>
     <title><acronym>Authentication</acronym></title>

     <itemizedlist>

      <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2020-03-09 [d9249441e] Mark ssl_passphrase_command as GUC_SUPERUSER_ONLY.
-->

       <para>
        Allow only superusers to view the <xref
        linkend="guc-ssl-passphrase-command"/> setting (Insung Moon)
        <ulink url="&commit_baseurl;d9249441e">&sect;</ulink>
       </para>

       <para>
        This was changed as a security precaution.
       </para>
      </listitem>

      <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2019-12-04 [b1abfec82] Update minimum SSL version
-->

       <para>
        Change the server's default minimum <acronym>TLS</acronym> version
        for encrypted connections from 1.0 to 1.2 (Peter Eisentraut)
        <ulink url="&commit_baseurl;b1abfec82">&sect;</ulink>
       </para>

       <para>
        This choice can be controlled by
        <xref linkend="guc-ssl-min-protocol-version"/>.
       </para>
      </listitem>

     </itemizedlist>

    </sect4>

    <sect4>
     <title>Server Configuration</title>

     <itemizedlist>

      <listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
2020-01-16 [2eb34ac36] Fix problems with "read only query" checks, and refactor
-->

       <para>
        Tighten rules on which utility commands are allowed in
        read-only transaction mode (Robert Haas)
        <ulink url="&commit_baseurl;2eb34ac36">&sect;</ulink>
       </para>

       <para>
        This change also increases the number of utility commands that can
        run in parallel queries.
       </para>
      </listitem>

      <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2019-11-29 [c4a7a392e] Make allow_system_table_mods settable at run time
-->

       <para>
        Allow <xref linkend="guc-allow-system-table-mods"/> to be changed
        after server start (Peter Eisentraut)
        <ulink url="&commit_baseurl;c4a7a392e">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2019-11-29 [508bf95b7] Remove any-user DML capability from allow_system_table_m
-->

       <para>
        Disallow non-superusers from modifying system tables when <xref
        linkend="guc-allow-system-table-mods"/> is set (Peter Eisentraut)
        <ulink url="&commit_baseurl;508bf95b7">&sect;</ulink>
       </para>

       <para>
        Previously, if <xref linkend="guc-allow-system-table-mods"/>
        was set at server start, non-superusers could issue
        <command>INSERT</command>/<command>UPDATE</command>/<command>DELETE</command>
        commands on system tables.
       </para>
      </listitem>

      <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2020-03-28 [8f3ec75de] Enable Unix-domain sockets support on Windows
-->

       <para>
        Enable support
        for <link linkend="runtime-config-connection-settings">Unix-domain
        sockets</link> on Windows (Peter Eisentraut)
        <ulink url="&commit_baseurl;8f3ec75de">&sect;</ulink>
       </para>
      </listitem>

     </itemizedlist>

    </sect4>

   </sect3>

   <sect3>
    <title>Streaming Replication and Recovery</title>

    <itemizedlist>

     <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2020-03-27 [1e6148032] Allow walreceiver configuration to change on reload
-->

      <para>
       Allow streaming replication configuration settings to be changed by
       reload (Sergei Kornilov)
       <ulink url="&commit_baseurl;1e6148032">&sect;</ulink>
      </para>

      <para>
       Previously, a server restart was required to change
       <xref linkend="guc-primary-conninfo"/> and <xref
       linkend="guc-primary-slot-name"/>.
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2020-01-14 [329730827] walreceiver uses a temporary replication slot by default
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2020-03-27 [092c6936d] Set wal_receiver_create_temp_slot PGC_POSTMASTER
-->

      <para>
       Allow <acronym>WAL</acronym> receivers to use a temporary
       replication slot when a permanent one is not specified (Peter
       Eisentraut, Sergei Kornilov)
       <ulink url="&commit_baseurl;329730827">&sect;</ulink>
       <ulink url="&commit_baseurl;092c6936d">&sect;</ulink>
      </para>

      <para>
       This behavior can be enabled using <xref
       linkend="guc-wal-receiver-create-temp-slot"/>.
      </para>
     </listitem>

     <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2020-04-07 [c65507763] Allow users to limit storage reserved by replication slo
-->

      <para>
       Allow WAL storage for replication slots to be limited by
       <xref linkend="guc-max-slot-wal-keep-size"/> (Kyotaro Horiguchi)
       <ulink url="&commit_baseurl;c65507763">&sect;</ulink>
      </para>

      <para>
       Replication slots that would require exceeding this value are
       marked invalid.
      </para>
     </listitem>

     <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2020-03-24 [496ee647e] Prefer standby promotion over recovery pause.
-->

      <para>
       Allow <link linkend="guc-promote-trigger-file">standby promotion</link>
       to cancel any requested pause (Fujii Masao)
       <ulink url="&commit_baseurl;496ee647e">&sect;</ulink>
      </para>

      <para>
       Previously, promotion could not happen while the standby was in
       paused state.
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2020-01-29 [dc788668b] Fail if recovery target is not reached
-->

      <para>
       Generate an error if recovery does not reach the specified <link
       linkend="runtime-config-wal-recovery-target">recovery target</link>
       (Leif Gunnar Erlandsen, Peter Eisentraut)
       <ulink url="&commit_baseurl;dc788668b">&sect;</ulink>
      </para>

      <para>
       Previously, a standby would promote itself upon reaching the end
       of <acronym>WAL</acronym>, even if the target was not reached.
      </para>
     </listitem>

     <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
2019-11-19 [cec2edfa7] Add logical_decoding_work_mem to limit ReorderBuffer mem
-->

      <para>
       Allow control over how much memory is used by logical decoding before
       it is spilled to disk (Tomas Vondra, Dilip Kumar, Amit Kapila)
       <ulink url="&commit_baseurl;cec2edfa7">&sect;</ulink>
      </para>

      <para>
       This is controlled by <xref linkend="guc-logical-decoding-work-mem"/>.
      </para>
     </listitem>

     <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2020-01-22 [41c184bc6] Add GUC ignore_invalid_pages.
-->

      <para>
       Allow recovery to continue even if invalid
       pages are referenced by <acronym>WAL</acronym> (Fujii Masao)
       <ulink url="&commit_baseurl;41c184bc6">&sect;</ulink>
      </para>

      <para>
       This is enabled using <xref linkend="guc-ignore-invalid-pages"/>.
      </para>
     </listitem>

    </itemizedlist>

   </sect3>

   <sect3>
    <title>Utility Commands</title>

    <itemizedlist>

     <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
2020-01-20 [40d964ec9] Allow vacuum command to process indexes in parallel.
-->

      <para>
       Allow <link linkend="sql-vacuum"><command>VACUUM</command></link>
       to process a table's indexes in parallel (Masahiko Sawada, Amit Kapila)
       <ulink url="&commit_baseurl;40d964ec9">&sect;</ulink>
      </para>

      <para>
       The new <literal>PARALLEL</literal> option controls this.
      </para>
     </listitem>

     <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2020-04-07 [357889eb1] Support FETCH FIRST WITH TIES
-->

      <para>
       Allow <link linkend="sql-limit"><command>FETCH FIRST</command></link>
       to use <literal>WITH TIES</literal> to return any additional rows
       that match the last result row (Surafel Temesgen)
       <ulink url="&commit_baseurl;357889eb1">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2020-04-04 [ce77abe63] Include information on buffer usage during planning phas
-->

      <para>
       Report planning-time buffer usage in <link
       linkend="sql-explain"><command>EXPLAIN</command></link>'s
       <literal>BUFFER</literal> output (Julien Rouhaud)
       <ulink url="&commit_baseurl;ce77abe63">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-03-10 [cacef1722] Ensure that CREATE TABLE LIKE copies any NO INHERIT cons
-->

      <para>
       Make <link linkend="sql-createtable"><command>CREATE TABLE
       LIKE</command></link> propagate a <literal>CHECK</literal>
       constraint's <literal>NO INHERIT</literal> property to the created
       table (Ildar Musin, Chris Travers)
       <ulink url="&commit_baseurl;cacef1722">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2020-02-18 [b7e51b350] Make inherited LOCK TABLE perform access permission chec
-->

      <para>
       When using <link linkend="sql-lock"><command>LOCK
       TABLE</command></link> on a partitioned table, do not check permissions
       on the child tables (Amit Langote)
       <ulink url="&commit_baseurl;b7e51b350">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2020-03-31 [de3bbfcc9] Fix INSERT OVERRIDING USER VALUE behavior
-->

      <para>
       Allow <link linkend="sql-insert"><literal>OVERRIDING USER
       VALUE</literal></link> on inserts into identity columns (Dean Rasheed)
       <ulink url="&commit_baseurl;de3bbfcc9">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2020-01-14 [f595117e2] ALTER TABLE ... ALTER COLUMN ... DROP EXPRESSION
-->

      <para>
       Add <link linkend="sql-altertable"><command>ALTER
       TABLE ... DROP EXPRESSION</command></link>
       to allow removing the <literal>GENERATED</literal>
       property from a column (Peter Eisentraut)
       <ulink url="&commit_baseurl;f595117e2">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-01-15 [1281a5c90] Restructure ALTER TABLE execution to fix assorted bugs.
-->

      <para>
       Fix bugs in multi-step <command>ALTER TABLE</command> commands (Tom
       Lane)
       <ulink url="&commit_baseurl;1281a5c90">&sect;</ulink>
      </para>

      <para>
       <literal>IF NOT EXISTS</literal> clauses now work as expected, in
       that derived actions (such as index creation) do not execute if the
       column already exists.  Also, certain cases of combining related
       actions into one <command>ALTER TABLE</command> now work when they
       did not before.
      </para>
     </listitem>

     <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2019-11-21 [30840c92a] Allow ALTER VIEW command to rename the column in the vie
-->

      <para>
       Add <link linkend="sql-alterview"><command>ALTER VIEW</command></link>
       syntax to rename view columns (Fujii Masao)
       <ulink url="&commit_baseurl;30840c92a">&sect;</ulink>
      </para>

      <para>
       Renaming view columns was already possible, but one had to
       write <command>ALTER TABLE RENAME COLUMN</command>, which is
       confusing.
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-03-06 [fe30e7ebf] Allow ALTER TYPE to change some properties of a base typ
-->

      <para>
       Add <link linkend="sql-altertype"><command>ALTER TYPE</command></link>
       options to modify a base type's <acronym>TOAST</acronym> properties
       and support functions (Tomas Vondra, Tom Lane)
       <ulink url="&commit_baseurl;fe30e7ebf">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2019-07-23 [06140c201] Add CREATE DATABASE LOCALE option
-->

      <para>
       Add <link linkend="sql-createdatabase"><command>CREATE
       DATABASE</command></link> <literal>LOCALE</literal> option (Peter
       Eisentraut)
       <ulink url="&commit_baseurl;06140c201">&sect;</ulink>
      </para>

      <para>
       This combines the existing options <literal>LC_COLLATE</literal> and
       <literal>LC_CTYPE</literal> into a single option.
      </para>
     </listitem>

     <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
2019-11-13 [1379fd537] Introduce the 'force' option for the Drop Database comma
-->

      <para>
       Allow <link linkend="sql-dropdatabase"><command>DROP
       DATABASE</command></link> to disconnect sessions using the target
       database, allowing the drop to succeed (Pavel Stehule, Amit Kapila)
       <ulink url="&commit_baseurl;1379fd537">&sect;</ulink>
      </para>

      <para>
       This is enabled by the <literal>FORCE</literal> option.
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2020-03-09 [71d60e2aa] Add tg_updatedcols to TriggerData
-->

      <para>
       Add structure member <link
       linkend="trigger-interface"><structfield>tg_updatedcols</structfield></link>
       to allow C-language update triggers to know which column(s) were updated
       (Peter Eisentraut)
       <ulink url="&commit_baseurl;71d60e2aa">&sect;</ulink>
      </para>
     </listitem>

    </itemizedlist>

   </sect3>

   <sect3>
    <title>Data Types</title>

    <itemizedlist>

     <listitem>
<!--
Tom Lane <tgl@sss.pgh.pa.us>
2020-03-19 [24e2885ee] Introduce "anycompatible" family of polymorphic types.
-->

      <para>
       Add polymorphic data types for use by functions requiring compatible
       arguments (Pavel Stehule)
       <ulink url="&commit_baseurl;24e2885ee">&sect;</ulink>
      </para>

      <para>
       The new data types are <link
       linkend="datatype-pseudotypes-table"><type>anycompatible</type></link>,
       <type>anycompatiblearray</type>, <type>anycompatiblenonarray</type>,
       and <type>anycompatiblerange</type>.
      </para>
     </listitem>

     <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
2020-04-07 [aeec457de] Add SQL type xid8 to expose FullTransactionId to users.
-->

      <para>
       Add <acronym>SQL</acronym> data type <link
       linkend="datatype-oid"><type>xid8</type></link> to expose
       FullTransactionId (Thomas Munro)
       <ulink url="&commit_baseurl;aeec457de">&sect;</ulink>
      </para>

      <para>
       The existing <type>xid</type> data type is only four bytes so it
       does not provide the transaction epoch.
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2020-03-18 [a2b1faa0f] Implement type regcollation
-->

      <para>
       Add data
       type <link linkend="datatype-oid"><type>regcollation</type></link>
       and associated functions, to represent OIDs of collation objects
       (Julien Rouhaud)
       <ulink url="&commit_baseurl;a2b1faa0f">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
2019-10-16 [d5ac14f9c] Use libc version as a collation version on glibc systems
-->

      <para>
       Use the glibc version in some cases as a <link
       linkend="collation">collation</link> version identifier (Thomas Munro)
       <ulink url="&commit_baseurl;d5ac14f9c">&sect;</ulink>
      </para>

      <para>
       If the glibc version changes, a warning will be issued about
       possible corruption of collation-dependent indexes.
      </para>
     </listitem>

     <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
2020-03-25 [352f6f2df] Add collation versions for Windows.
-->

      <para>
       Add support for collation versions on Windows (Thomas Munro)
       <ulink url="&commit_baseurl;352f6f2df">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-10-28 [8b7a0f1d1] Allow extracting fields from a ROW() expression in more
-->

      <para>
       Allow <link linkend="sql-syntax-row-constructors"><literal>ROW</literal>
       expressions</link> to have their members extracted with suffix
       notation (Tom Lane)
       <ulink url="&commit_baseurl;8b7a0f1d1">&sect;</ulink>
      </para>

      <para>
       For example, <literal>(ROW(4, 5.0)).f1</literal> now returns 4.
      </para>
     </listitem>

    </itemizedlist>

   </sect3>

   <sect3>
    <title>Functions</title>

    <itemizedlist>

     <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
2020-01-17 [a83586b55] Add a non-strict version of jsonb_set
-->

      <para>
       Add alternate version of <link
       linkend="functions-json-processing-table"><function>jsonb_set()</function></link>
       with improved <literal>NULL</literal> handling (Andrew Dunstan)
       <ulink url="&commit_baseurl;a83586b55">&sect;</ulink>
      </para>

      <para>
       The new function, <function>jsonb_set_lax()</function>, handles a
       <literal>NULL</literal> new value by either setting the specified
       key to a <acronym>JSON</acronym> null, deleting the key, raising an
       exception, or returning the <type>jsonb</type> value unmodified, as
       requested.
      </para>
     </listitem>

     <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
2019-09-25 [bffe1bd68] Implement jsonpath .datetime() method
-->

      <para>
       Add jsonpath <link
       linkend="functions-sqljson-path-operators">.<function>datetime()</function></link>
       method (Nikita Glukhov, Teodor Sigaev, Oleg Bartunov, Alexander
       Korotkov)
       <ulink url="&commit_baseurl;bffe1bd68">&sect;</ulink>
      </para>

      <para>
       This function allows <acronym>JSON</acronym> values to be converted
       to timestamps, which can then be processed in <type>jsonpath</type>
       expressions.  This change also adds <type>jsonpath</type> functions
       that support time-zone-aware output.
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2020-04-02 [2991ac5fc] Add SQL functions for Unicode normalization
-->

      <para>
       Add <acronym>SQL</acronym> functions <link
       linkend="functions-string-sql"><literal>NORMALIZE</literal>()</link>
       to normalize Unicode strings, and <link
       linkend="collation-nondeterministic"><literal>IS
       NORMALIZED</literal></link> to check for normalization (Peter
       Eisentraut)
       <ulink url="&commit_baseurl;2991ac5fc">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
2019-07-05 [313f87a17] Add min() and max() aggregates for pg_lsn
-->

      <para>
       Add <function>min()</function> and
       <function>max()</function> aggregates for <link
       linkend="datatype-pg-lsn"><type>pg_lsn</type></link> (Fabr&iacute;zio
       de Royes Mello)
       <ulink url="&commit_baseurl;313f87a17">&sect;</ulink>
      </para>

      <para>
       These are particularly useful in monitoring queries.
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-03-06 [a6525588b] Allow Unicode escapes in any server encoding, not only U
-->

      <para>
       Allow <link linkend="sql-syntax-strings-uescape">Unicode
       escapes</link>,
       e.g., <literal>E'\u<replaceable>nnnn</replaceable>'</literal>
       or <literal>U&amp;'\<replaceable>nnnn</replaceable>'</literal>, to
       specify any character available in the database encoding, even when
       the database encoding is not <acronym>UTF</acronym>-8 (Tom Lane)
       <ulink url="&commit_baseurl;a6525588b">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-03-03 [d67755049] Allow to_date/to_timestamp to recognize non-English mont
-->

      <para>
       Allow <link
       linkend="functions-formatting"><function>to_date()</function></link>
       and <function>to_timestamp()</function> to recognize non-English
       month/day names (Juan Jos&eacute; Santamar&iacute;a Flecha, Tom Lane)
       <ulink url="&commit_baseurl;d67755049">&sect;</ulink>
      </para>

      <para>
       The names recognized are the same as those output by <link
       linkend="functions-formatting"><function>to_char()</function></link>
       with the same format patterns.
      </para>
     </listitem>

     <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
2019-09-16 [d589f9446] Support for FF1-FF6 datetime format patterns
-->

      <para>
       Add datetime format patterns <literal>FF1</literal>
       &ndash; <literal>FF6</literal> to specify input or output of
       1 to 6 fractional-second digits (Alexander
       Korotkov, Nikita Glukhov, Teodor Sigaev, Oleg Bartunov)
       <ulink url="&commit_baseurl;d589f9446">&sect;</ulink>
      </para>

      <para>
       These patterns can be used by <function>to_char()</function>,
       <function>to_timestamp()</function>, and jsonpath's
       .<function>datetime()</function>.
      </para>
     </listitem>

     <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
2019-09-16 [b64b857f5] Support for SSSSS datetime format pattern
-->

      <para>
       Add <literal>SSSSS</literal> datetime format pattern as an
       <acronym>SQL</acronym>-standard alias for <literal>SSSS</literal>
       (Nikita Glukhov, Alexander Korotkov)
       <ulink url="&commit_baseurl;b64b857f5">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2019-07-14 [5925e5549] Add gen_random_uuid function
-->

      <para>
       Add function <link
       linkend="functions-uuid"><function>gen_random_uuid()</function></link>
       to generate version-4 UUIDs (Peter Eisentraut)
       <ulink url="&commit_baseurl;5925e5549">&sect;</ulink>
      </para>

      <para>
       Previously <acronym>UUID</acronym> generation functions were only
       available in the external modules <xref linkend="uuid-ossp"/> and <xref
       linkend="pgcrypto"/>.
      </para>
     </listitem>

     <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
2020-01-25 [13661ddd7] Add functions gcd() and lcm() for integer and numeric ty
-->

      <para>
       Add greatest-common-denominator
       (<link linkend="functions-math-func-table"><function>gcd</function></link>)
       and least-common-multiple (<function>lcm</function>) functions (Vik
       Fearing)
       <ulink url="&commit_baseurl;13661ddd7">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
2020-03-01 [43a899f41] Fix corner-case loss of precision in numeric ln().
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
2020-03-28 [4083f445c] Improve the performance and accuracy of numeric sqrt() a
-->

      <para>
       Improve the performance and accuracy of the <type>numeric</type>
       type's <link linkend="functions-math-func-table">square root</link>
       (<function>sqrt</function>) and natural log
       (<function>ln</function>) functions (Dean Rasheed)
       <ulink url="&commit_baseurl;43a899f41">&sect;</ulink>
       <ulink url="&commit_baseurl;4083f445c">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-01-06 [20d6225d1] Add functions min_scale(numeric) and trim_scale(numeric)
-->

      <para>
       Add function <link
       linkend="functions-math-func-table"><function>min_scale()</function></link>
       that returns the number of digits to the right of the decimal point
       that are required to represent a <type>numeric</type> value with
       full accuracy (Pavel Stehule)
       <ulink url="&commit_baseurl;20d6225d1">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-01-06 [20d6225d1] Add functions min_scale(numeric) and trim_scale(numeric)
-->

      <para>
       Add function <link
       linkend="functions-math-func-table"><function>trim_scale()</function></link>
       to reduce the scale of a <type>numeric</type> value by removing
       trailing zeros (Pavel Stehule)
       <ulink url="&commit_baseurl;20d6225d1">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
2019-07-14 [6254c55f8] Add missing commutators for distance operators
-->

      <para>
       Add commutators of <link linkend="functions-geometry-op-table">distance
       operators</link> (Nikita Glukhov)
       <ulink url="&commit_baseurl;6254c55f8">&sect;</ulink>
      </para>

      <para>
       For example, previously only <type>point</type>
       <literal>&lt;-&gt;</literal> <type>line</type> was supported,
       now <type>line</type> <literal>&lt;-&gt;</literal> <type>point</type>
       works too.
      </para>
     </listitem>

     <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
2020-04-07 [4c04be9b0] Introduce xid8-based functions to replace txid_XXX.
-->

      <para>
       Create <type>xid8</type> versions of all <link
       linkend="functions-pg-snapshot">transaction ID functions</link>
       (Thomas Munro)
       <ulink url="&commit_baseurl;4c04be9b0">&sect;</ulink>
      </para>

      <para>
       The old <type>xid</type>-based functions still exist, for backward
       compatibility.
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-04-07 [26a944cf2] Adjust bytea get_bit/set_bit to use int8 not int4 for bi
-->

      <para>
       Allow <link
       linkend="functions-binarystring-other"><function>get_bit()</function></link>
       and <function>set_bit()</function> to set bits beyond the first
       256MB of a <type>bytea</type> value (Movead Li)
       <ulink url="&commit_baseurl;26a944cf2">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-08-01 [4886da832] Mark advisory-lock functions as parallel restricted, not
-->

      <para>
       Allow <link linkend="functions-advisory-locks">advisory-lock
       functions</link> to be used in some parallel operations (Tom Lane)
       <ulink url="&commit_baseurl;4886da832">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2020-04-20 [5fc703946] Add ALTER .. NO DEPENDS ON
-->

      <para>
       Add the ability to remove an object's dependency on an extension
       (&Aacute;lvaro Herrera)
       <ulink url="&commit_baseurl;5fc703946">&sect;</ulink>
      </para>

      <para>
       The object can be a function, materialized view, index, or trigger.
       The syntax is <command>ALTER .. NO DEPENDS ON</command>.
      </para>
     </listitem>

    </itemizedlist>

   </sect3>

   <sect3>
    <title><link linkend="plpgsql">PL/pgSQL</link></title>

    <itemizedlist>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-03-26 [8f59f6b9c] Improve performance of "simple expressions" in PL/pgSQL.
-->

      <para>
       Improve performance of simple PL/pgSQL expressions (Tom Lane,
       Amit Langote)
       <ulink url="&commit_baseurl;8f59f6b9c">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-11-22 [73b06cf89] Avoid taking a new snapshot for an immutable simple expr
-->

      <para>
       Improve performance of PL/pgSQL functions that use immutable
       expressions (Konstantin Knizhnik)
       <ulink url="&commit_baseurl;73b06cf89">&sect;</ulink>
      </para>
     </listitem>

    </itemizedlist>

   </sect3>

   <sect3>
    <title>Client Interfaces</title>

    <itemizedlist>

     <listitem>
<!--
Author: Jeff Davis <jdavis@postgresql.org>
2019-09-23 [d6e612f83] Add libpq parameter 'channel_binding'.
-->

      <para>
       Allow libpq clients to require channel binding for encrypted
       connections (Jeff Davis)
       <ulink url="&commit_baseurl;d6e612f83">&sect;</ulink>
      </para>

      <para>
       Using the libpq connection parameter <link
       linkend="libpq-connect-channel-binding"><literal>channel_binding</literal></link>
       forces the other end of the <acronym>TLS</acronym> connection to prove
       it knows the user's password.  This prevents man-in-the-middle attacks.
      </para>
     </listitem>

     <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
2020-01-28 [ff8ca5fad] Add connection parameters to control SSL protocol min/ma
Author: Michael Paquier <michael@paquier.xyz>
2020-04-30 [401aad670] Rename connection parameters to control min/max SSL prot
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-06-27 [16412c784] Change libpq's default ssl_min_protocol_version to TLSv1
-->

      <para>
       Add libpq connection parameters to control the minimum and maximum
       <acronym>TLS</acronym> version allowed for an encrypted connection
       (Daniel Gustafsson)
       <ulink url="&commit_baseurl;ff8ca5fad">&sect;</ulink>
       <ulink url="&commit_baseurl;401aad670">&sect;</ulink>
       <ulink url="&commit_baseurl;16412c784">&sect;</ulink>
      </para>

      <para>
       The settings are <xref
       linkend="libpq-connect-ssl-min-protocol-version"/> and <xref
       linkend="libpq-connect-ssl-max-protocol-version"/>.
       By default, the minimum <acronym>TLS</acronym> version is 1.2
       (this represents a behavioral change from previous releases).
      </para>
     </listitem>

     <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
2019-11-30 [4dc635521] libq support for sslpassword connection param,  DER form
-->

      <para>
       Allow use of passwords to unlock client certificates (Craig
       Ringer, Andrew Dunstan)
       <ulink url="&commit_baseurl;4dc635521">&sect;</ulink>
      </para>

      <para>
       This is enabled by libpq's <xref linkend="libpq-connect-sslpassword"/>
       connection parameter.
      </para>
     </listitem>

     <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
2019-11-30 [4dc635521] libq support for sslpassword connection param,  DER form
-->

      <para>
       Allow libpq to use <acronym>DER</acronym>-encoded client
       certificates (Craig Ringer, Andrew Dunstan)
       <ulink url="&commit_baseurl;4dc635521">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-08-03 [44cd434ec] Fix behavior of ecpg's "EXEC SQL elif name".
-->

      <para>
       Fix <application>ecpg</application>'s <literal>EXEC SQL
       elif</literal> directive to work correctly (Tom Lane)
       <ulink url="&commit_baseurl;44cd434ec">&sect;</ulink>
      </para>

      <para>
       Previously it behaved the same as <literal>endif</literal> followed
       by <literal>ifdef</literal>, so that a successful previous branch
       of the same <literal>if</literal> construct did not prevent
       expansion of the <literal>elif</literal> branch or following
       branches.
      </para>
     </listitem>

    </itemizedlist>

   </sect3>

   <sect3>
    <title>Client Applications</title>

    <sect4>
     <title><xref linkend="app-psql"/></title>

     <itemizedlist>

      <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
2020-02-12 [dcdbb5a5d] Add %x to default PROMPT1 and PROMPT2 in psql
-->

       <para>
        Add transaction status (<literal>%x</literal>)
        to <application>psql</application>'s default
        <link linkend="app-psql-prompting">prompts</link> (Vik Fearing)
        <ulink url="&commit_baseurl;dcdbb5a5d">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
2019-11-19 [7f338369c] Allow invisible PROMPT2 in psql.
-->

       <para>
        Allow the secondary <application>psql</application> prompt to be
        blank but the same width as the primary prompt (Thomas Munro)
        <ulink url="&commit_baseurl;7f338369c">&sect;</ulink>
       </para>

       <para>
        This is accomplished by setting <literal>PROMPT2</literal>
        to <literal>%w</literal>.
       </para>
      </listitem>

      <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-04-07 [b63c293bc] Allow psql's \g and \gx commands to transiently change \
-->

       <para>
        Allow <application>psql</application>'s
        <link linkend="app-psql-meta-commands"><literal>\g</literal></link>
        and <literal>\gx</literal> commands to
        change <link linkend="app-psql-meta-commands">\pset</link> output
        options for the duration of that single command (Tom Lane)
        <ulink url="&commit_baseurl;b63c293bc">&sect;</ulink>
       </para>

       <para>
        This feature allows syntax like <literal>\g (expand=on)</literal>,
        which is equivalent to <literal>\gx</literal>.
       </para>
      </listitem>

      <listitem>
<!--
Author: Alexander Korotkov <akorotkov@postgresql.org>
2020-03-08 [b0b5e20cd] Show opclass and opfamily related information in psql
-->

       <para>
        Add <application>psql</application> commands to display operator
        classes and operator families (Sergey Cherkashin, Nikita Glukhov,
        Alexander Korotkov)
        <ulink url="&commit_baseurl;b0b5e20cd">&sect;</ulink>
       </para>

       <para>
        The new commands are <link
        linkend="app-psql-meta-commands"><literal>\dAc</literal></link>,
        <literal>\dAf</literal>, <literal>\dAo</literal>,
        and <literal>\dAp</literal>.
       </para>
      </listitem>

      <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-07-03 [9a2ea6183] Show table persistence in psql's \dt+ and related comman
-->

       <para>
        Show table persistence in <application>psql</application>'s <link
        linkend="app-psql-meta-commands"><literal>\dt+</literal></link>
        and related commands (David Fetter)
        <ulink url="&commit_baseurl;9a2ea6183">&sect;</ulink>
       </para>

       <para>
        In verbose mode, the table/index/view shows if the object is permanent,
        temporary, or unlogged.
       </para>
      </listitem>

      <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-07-23 [eb5472da9] Improve psql's \d output for TOAST tables.
-->

       <para>
        Improve output of <application>psql</application>'s <link
        linkend="app-psql-meta-commands"><literal>\d</literal></link>
        for <acronym>TOAST</acronym> tables (Justin Pryzby)
        <ulink url="&commit_baseurl;eb5472da9">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-11-22 [d1c866e57] Make psql redisplay the query buffer after \e.
-->

       <para>
        Fix redisplay after <application>psql</application>'s <link
        linkend="app-psql-meta-commands"><literal>\e</literal></link>
        command (Tom Lane)
        <ulink url="&commit_baseurl;d1c866e57">&sect;</ulink>
       </para>

       <para>
        When exiting the editor, if the query doesn't end with a semicolon
        or <literal>\g</literal>, the query buffer contents will now be
        displayed.
       </para>
      </listitem>

      <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-07-05 [02e95a504] Add \warn command to psql.
-->

       <para>
        Add <link
        linkend="app-psql-meta-commands"><literal>\warn</literal></link>
        command to <application>psql</application> (David Fetter)
        <ulink url="&commit_baseurl;02e95a504">&sect;</ulink>
       </para>

       <para>
        This is like <literal>\echo</literal> except that the text is sent
        to stderr instead of stdout.
       </para>
      </listitem>

      <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2020-02-28 [1933ae629] Add PostgreSQL home page to - -help output
-->

       <para>
        Add the <productname>PostgreSQL</productname> home page to command-line
        <option>--help</option> output (Peter Eisentraut)
        <ulink url="&commit_baseurl;1933ae629">&sect;</ulink>
       </para>
      </listitem>

     </itemizedlist>

    </sect4>

    <sect4>
     <title><link linkend="pgbench"><application>pgbench</application></link></title>

     <itemizedlist>

      <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
2019-10-03 [b1c1aa531] pgbench: add - -partitions and - -partition-method options
-->

       <para>
        Allow pgbench to partition its <quote>accounts</quote> table
        (Fabien Coelho)
        <ulink url="&commit_baseurl;b1c1aa531">&sect;</ulink>
       </para>

       <para>
        This allows performance testing of partitioning.
       </para>
      </listitem>

      <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
2020-04-03 [9d8ef9880] Add support for \aset in pgbench
-->

       <para>
        Add pgbench command <literal>\aset</literal>, which behaves
        like <literal>\gset</literal>, but for multiple queries (Fabien
        Coelho)
        <ulink url="&commit_baseurl;9d8ef9880">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2019-11-06 [a386942bd] Add "G" (server-side data generation) as an initializati
-->

       <para>
        Allow pgbench to generate its initial data server-side, rather
        than client-side (Fabien Coelho)
        <ulink url="&commit_baseurl;a386942bd">&sect;</ulink>
       </para>
      </listitem>

      <listitem>
<!--
Author: Thomas Munro <tmunro@postgresql.org>
2019-07-16 [5823677ac] Provide pgbench - -show-script to dump built-in scripts.
-->

       <para>
        Allow pgbench to show script contents using option
        <option>--show-script</option> (Fabien Coelho)
        <ulink url="&commit_baseurl;5823677ac">&sect;</ulink>
       </para>
      </listitem>

     </itemizedlist>

    </sect4>

   </sect3>

   <sect3>
    <title>Server Applications</title>

    <itemizedlist>

     <listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
2020-04-03 [0d8c9c121] Generate backup manifests for base backups, and validate
Author: Robert Haas <rhaas@postgresql.org>
2020-04-12 [dbc60c559] Rename pg_validatebackup to pg_verifybackup.
-->

      <para>
       Generate backup manifests for base backups, and verify them (Robert
       Haas)
       <ulink url="&commit_baseurl;0d8c9c121">&sect;</ulink>
       <ulink url="&commit_baseurl;dbc60c559">&sect;</ulink>
      </para>

      <para>
       A new tool <link
       linkend="app-pgverifybackup"><application>pg_verifybackup</application></link>
       can verify backups.
      </para>
     </listitem>

     <listitem>
<!--
Author: Author: Fujii Masao <fujii@postgresql.org>
2020-03-19 [fab13dc50] Make pg_basebackup ask the server to estimate the total
-->

      <para>
       Have <link
       linkend="app-pgbasebackup"><application>pg_basebackup</application></link>
       estimate the total backup size by default (Fujii Masao)
       <ulink url="&commit_baseurl;fab13dc50">&sect;</ulink>
      </para>

      <para>
       This computation allows <link
       linkend="monitoring-stats-dynamic-views-table"><structname>pg_stat_progress_basebackup</structname></link>
       to show progress.  If that is not needed, it can be disabled by
       using the <option>--no-estimate-size</option> option.  Previously,
       this computation happened only if the <option>--progress</option>
       option was used.
      </para>
     </listitem>

     <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2019-09-30 [927474ce1] pg_rewind: Allow writing recovery configuration
-->

      <para>
       Add an option to <link
       linkend="app-pgrewind"><application>pg_rewind</application></link>
       to configure standbys (Paul Guo, Jimmy Yih, Ashwin Agrawal)
       <ulink url="&commit_baseurl;927474ce1">&sect;</ulink>
      </para>

      <para>
       This matches <link
       linkend="app-pgbasebackup"><application>pg_basebackup</application></link>'s
       <option>--write-recovery-conf</option> option.
      </para>
     </listitem>

     <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
2020-04-01 [a7e8ece41] Add -c/- -restore-target-wal to pg_rewind
-->

      <para>
       Allow <application>pg_rewind</application> to use the target
       cluster's <xref linkend="guc-restore-command"/> to retrieve needed
       <acronym>WAL</acronym> (Alexey Kondratov)
       <ulink url="&commit_baseurl;a7e8ece41">&sect;</ulink>
      </para>

      <para>
       This is enabled using the
       <option>-c</option>/<option>--restore-target-wal</option> option.
      </para>
     </listitem>

     <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2019-09-27 [5adafaf17] Have pg_rewind run crash recovery before rewinding
-->

      <para>
       Have <application>pg_rewind</application> automatically run crash
       recovery before rewinding (Paul Guo, Jimmy Yih, Ashwin Agrawal)
       <ulink url="&commit_baseurl;5adafaf17">&sect;</ulink>
      </para>

      <para>
       This can be disabled by using <option>--no-ensure-shutdown</option>.
      </para>
     </listitem>

     <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2019-11-13 [7b8a899bd] Make pg_waldump report more detail information about PRE
-->

      <para>
       Increase the <link linkend="sql-prepare-transaction"><command>PREPARE
       TRANSACTION</command></link>-related information reported by
       <application>pg_waldump</application> (Fujii Masao)
       <ulink url="&commit_baseurl;7b8a899bd">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
2020-04-02 [ac44367ef] pg_waldump: Add a - -quiet option.
-->

      <para>
       Add <link
       linkend="pgwaldump"><application>pg_waldump</application></link>
       option <option>--quiet</option> to suppress non-error output (Andres
       Freund, Robert Haas)
       <ulink url="&commit_baseurl;ac44367ef">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2020-03-25 [2f9eb3132] pg_dump: Allow dumping data of specific foreign servers
-->

      <para>
       Add <link
       linkend="app-pgdump"><application>pg_dump</application></link>
       option <option>--include-foreign-data</option> to dump data from
       foreign servers (Luis Carril)
       <ulink url="&commit_baseurl;2f9eb3132">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
2020-01-29 [47bc9ced0] Add - -parallel option to vacuumdb command.
-->

      <para>
       Allow vacuum commands run by <link
       linkend="app-vacuumdb">vacuumdb</link> to operate in parallel mode
       (Masahiko Sawada)
       <ulink url="&commit_baseurl;47bc9ced0">&sect;</ulink>
      </para>

      <para>
       This is enabled with the new <option>--parallel</option> option.
      </para>
     </listitem>

     <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
2019-07-27 [5ab892c39] Add support for - -jobs in reindexdb
-->

      <para>
       Allow <link linkend="app-reindexdb">reindexdb</link> to operate in
       parallel (Julien Rouhaud)
       <ulink url="&commit_baseurl;5ab892c39">&sect;</ulink>
      </para>

      <para>
       Parallel mode is enabled with the new <option>--jobs</option> option.
      </para>
     </listitem>

     <listitem>
<!--
Author: Amit Kapila <akapila@postgresql.org>
2019-11-20 [80e05a088] Add the support for '-f' option in dropdb utility.
-->

      <para>
       Allow <link linkend="app-dropdb">dropdb</link> to disconnect
       sessions using the target database, allowing the drop to succeed
       (Pavel Stehule)
       <ulink url="&commit_baseurl;80e05a088">&sect;</ulink>
      </para>

      <para>
       This is enabled with the <option>-f</option> option.
      </para>
     </listitem>

     <listitem>
<!--
Author: Author: Michael Paquier <michael@paquier.xyz>
2019-10-23 [4fa5edcd1] Remove last traces of - -adduser/- -no-adduser in createus
-->

      <para>
       Remove <option>--adduser</option> and <option>--no-adduser</option>
       from <link linkend="app-createuser">createuser</link> (Alexander
       Lakhin)
       <ulink url="&commit_baseurl;4fa5edcd1">&sect;</ulink>
      </para>

      <para>
       The long-supported preferred options for this are called
       <option>--superuser</option> and <option>--no-superuser</option>.
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2019-07-27 [959f6d6a1] pg_upgrade: Default new bindir to pg_upgrade location
-->

      <para>
       Use the directory of the <link
       linkend="pgupgrade"><application>pg_upgrade</application></link>
       program as the default <option>--new-bindir</option> setting when
       running <application>pg_upgrade</application> (Daniel Gustafsson)
       <ulink url="&commit_baseurl;959f6d6a1">&sect;</ulink>
      </para>
     </listitem>

    </itemizedlist>

   </sect3>

   <sect3>
    <title>Documentation</title>

    <itemizedlist>

     <listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
2020-04-03 [347d2b07f] Add a glossary to the documentation
-->

      <para>
       Add a <link linkend="glossary">glossary</link> to the documentation
       (Corey Huinker, J&uuml;rgen Purtz, Roger Harkavy, &Aacute;lvaro
       Herrera)
       <ulink url="&commit_baseurl;347d2b07f">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-04-12 [e894c6183] Doc: introduce new layout for tables of functions and op
-->

      <para>
       Reformat tables containing <link linkend="functions">function
       and operator information</link> for better clarity (Tom Lane)
       <ulink url="&commit_baseurl;e894c6183">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2019-08-13 [416c75cf3] Update to DocBook 4.5
-->

      <para>
       Upgrade to use <link linkend="docguide-docbook">DocBook 4.5</link>
       (Peter Eisentraut)
       <ulink url="&commit_baseurl;416c75cf3">&sect;</ulink>
      </para>
     </listitem>

    </itemizedlist>

   </sect3>

   <sect3>
    <title>Source Code</title>

    <itemizedlist>

     <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
2019-07-02 [2b1394fc2] Add support for Visual Studio 2019 in build scripts
-->

      <para>
       Add support for building on Visual Studio 2019 (Haribabu Kommi)
       <ulink url="&commit_baseurl;2b1394fc2">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2019-12-19 [e975c1a60] Add support for MSYS2
-->

      <para>
       Add build support for MSYS2 (Peter Eisentraut)
       <ulink url="&commit_baseurl;e975c1a60">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
2019-10-18 [30ee5d17c] For all ppc compilers, implement compare_exchange and fe
-->

      <para>
       Add compare_exchange and fetch_add assembly language code for Power
       PC compilers (Noah Misch)
       <ulink url="&commit_baseurl;30ee5d17c">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2019-07-04 [7b925e127] Sync our Snowball stemmer dictionaries with current upst
-->

      <para>
       Update <link linkend="textsearch-snowball-dictionary">Snowball
       stemmer</link> dictionaries used by full text search (Panagiotis
       Mavrogiorgos)
       <ulink url="&commit_baseurl;7b925e127">&sect;</ulink>
      </para>

      <para>
       This adds Greek stemming and improves Danish and French stemming.
      </para>
     </listitem>

     <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
2020-02-19 [e2e02191e] Clean up some code, comments and docs referring to Windo
-->

      <para>
       Remove support for Windows 2000 (Michael Paquier)
       <ulink url="&commit_baseurl;e2e02191e">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2019-07-01 [c72f9b950] Remove support for non-ELF BSD systems
-->

      <para>
       Remove support for non-<acronym>ELF</acronym> <acronym>BSD</acronym>
       systems (Peter Eisentraut)
       <ulink url="&commit_baseurl;c72f9b950">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2020-01-08 [37f21ed13] Remove support for Python older than 2.6
-->

      <para>
       Remove <link linkend="plpython">support</link> for Python versions
       2.5.X and earlier (Peter Eisentraut)
       <ulink url="&commit_baseurl;37f21ed13">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
2020-01-06 [7b283d0e1] Remove support for OpenSSL 0.9.8 and 1.0.0
-->

      <para>
       Remove <link linkend="install-short">support</link> for OpenSSL 0.9.8
       and 1.0.0 (Michael Paquier)
       <ulink url="&commit_baseurl;7b283d0e1">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2019-11-27 [4513d8b07] Move configure - -disable-float8-byval to pg_config_manua
Author: Peter Eisentraut <peter@eisentraut.org>
2019-11-21 [2e4db241b] Remove configure - -disable-float4-byval
-->

      <para>
       Remove <link linkend="install-short">configure</link> options
       <option>--disable-float8-byval</option>
       and <option>--disable-float4-byval</option> (Peter Eisentraut)
       <ulink url="&commit_baseurl;4513d8b07">&sect;</ulink>
       <ulink url="&commit_baseurl;2e4db241b">&sect;</ulink>
      </para>

      <para>
       These were needed for compatibility with some version-zero C
       functions, but those are no longer supported.
      </para>
     </listitem>

     <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2020-03-30 [6aba63ef3] Allow the planner-related functions and hook to accept t
-->

      <para>
       Pass the query string to planner hook functions (Pascal Legrand,
       Julien Rouhaud)
       <ulink url="&commit_baseurl;6aba63ef3">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Joe Conway <mail@joeconway.com>
2019-11-23 [f7a2002e8] Add object TRUNCATE hook
-->

      <para>
       Add <link linkend="sql-truncate"><command>TRUNCATE</command></link>
       command hook (Yuli Khodorkovskiy)
       <ulink url="&commit_baseurl;f7a2002e8">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
2020-03-25 [896fcdb23] Provide a TLS init hook
-->

      <para>
       Add <acronym>TLS</acronym> init hook (Andrew Dunstan)
       <ulink url="&commit_baseurl;896fcdb23">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2020-01-31 [a9cff89f7] Allow building without default socket directory
-->

      <para>
       Allow building with no predefined Unix-domain socket directory
       (Peter Eisentraut)
       <ulink url="&commit_baseurl;a9cff89f7">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-09-05 [7de19fbc0] Use data directory inode number, not port, to select Sys
-->

      <para>
       Reduce the probability of SysV resource key collision on Unix platforms
       (Tom Lane)
       <ulink url="&commit_baseurl;7de19fbc0">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
2019-09-05 [74a308cf5] Use explicit_bzero
-->

      <para>
       Use operating system functions to reliably erase memory that contains
       sensitive information (Peter Eisentraut)
       <ulink url="&commit_baseurl;74a308cf5">&sect;</ulink>
      </para>

      <para>
       For example, this is used for clearing passwords stored in memory.
      </para>
     </listitem>

     <listitem>
<!--
Author: Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-08-19 [55ea10918] Add "headerscheck" script to test header-file compilabil
-->

      <para>
       Add <filename>headerscheck</filename> script to test C header-file
       compatibility (Tom Lane)
       <ulink url="&commit_baseurl;55ea10918">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2019-07-15 [1cff1b95a] Represent Lists as expansible arrays, not chains of cons
-->

      <para>
       Implement internal lists as arrays, rather than a chain of cells
       (Tom Lane)
       <ulink url="&commit_baseurl;1cff1b95a">&sect;</ulink>
      </para>

      <para>
       This improves performance for queries that access many objects.
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-07-24 [92fe6895d] Fix assorted bugs by changing TS_execute's callback API
2020-07-24 [70eca6a9a] Replace TS_execute's TS_EXEC_CALC_NOT flag with TS_EXEC_
-->

      <para>
       Change the API for <function>TS_execute()</function> (Tom Lane,
       Pavel Borisov)
       <ulink url="&commit_baseurl;92fe6895d">&sect;</ulink>
       <ulink url="&commit_baseurl;70eca6a9a">&sect;</ulink>
      </para>

      <para>
       <function>TS_execute</function> callbacks must now provide ternary
       (yes/no/maybe) logic.  Calculating NOT queries accurately is now
       the default.
      </para>
     </listitem>

    </itemizedlist>

   </sect3>

   <sect3>
    <title>Additional Modules</title>

    <itemizedlist>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-01-29 [50fc694e4] Invent "trusted" extensions, and remove the pg_pltemplat
-->

      <para>
       Allow <link linkend="sql-createextension">extensions</link> to be
       specified as trusted (Tom Lane)
       <ulink url="&commit_baseurl;50fc694e4">&sect;</ulink>
      </para>

      <para>
       Such extensions can be installed in a database by users with
       database-level <literal>CREATE</literal> privileges, even if they
       are not superusers.  This change also removes
       the <structname>pg_pltemplate</structname> system catalog.
      </para>
     </listitem>

     <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
2019-12-20 [6136e94dc] Superuser can permit passwordless connections on postgre
-->

      <para>
       Allow non-superusers to connect to <xref linkend="postgres-fdw"/>
       foreign servers without using a password (Craig Ringer)
       <ulink url="&commit_baseurl;6136e94dc">&sect;</ulink>
      </para>

      <para>
       Specifically, allow a superuser to set
       <literal>password_required</literal> to false for
       a <link linkend="sql-alterusermapping">user mapping</link>.  Care
       must still be taken to prevent non-superusers from using superuser
       credentials to connect to the foreign server.
      </para>
     </listitem>

     <listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
2020-01-09 [f5fd995a1] Allow 'sslkey' and 'sslcert' in postgres_fdw user mappin
-->

      <para>
       Allow <application>postgres_fdw</application> to use certificate
       authentication (Craig Ringer)
       <ulink url="&commit_baseurl;f5fd995a1">&sect;</ulink>
      </para>

      <para>
       Different users can use different certificates.
      </para>
     </listitem>

     <listitem>
<!--
Author: Joe Conway <mail@joeconway.com>
2019-11-23 [4f66c93f6] Update sepgsql to add mandatory access control for TRUNC
-->

      <para>
       Allow <xref linkend="sepgsql"/> to control access to the
       <command>TRUNCATE</command> command (Yuli Khodorkovskiy)
       <ulink url="&commit_baseurl;4f66c93f6">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-03-06 [36058a3c5] Create contrib/bool_plperl to provide a bool transform f
-->

      <para>
       Add extension <link
       linkend="plperl"><application>bool_plperl</application></link>
       which transforms <acronym>SQL</acronym> booleans to/from PL/Perl
       booleans (Ivan Panchenko)
       <ulink url="&commit_baseurl;36058a3c5">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Andrew Gierth <rhodiumtoad@postgresql.org>
2019-07-14 [6e74c64bc] Teach pg_stat_statements not to ignore FOR UPDATE clause
-->

      <para>
       Have <xref linkend="pgstatstatements"/> treat <command>SELECT
       ... FOR UPDATE</command> commands as distinct from those
       without <command>FOR UPDATE</command> (Andrew Gierth, Vik Fearing)
       <ulink url="&commit_baseurl;6e74c64bc">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2020-04-02 [17e032822] Allow pg_stat_statements to track planning statistics.
2020-07-03 [8d459762b] Change default of pg_stat_statements.track_planning to o
-->

      <para>
       Allow <application>pg_stat_statements</application> to optionally
       track the planning time of statements (Julien Rouhaud, Pascal Legrand,
       Thomas Munro, Fujii Masao)
       <ulink url="&commit_baseurl;17e032822">&sect;</ulink>
       <ulink url="&commit_baseurl;8d459762b">&sect;</ulink>
      </para>

      <para>
       Previously only execution time was tracked.
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-03-31 [70dc4c509] Fix lquery's NOT handling, and add ability to quantify n
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-04-01 [17ca06799] Clean up parsing of ltree and lquery some more.
-->

      <para>
       Overhaul <xref linkend="ltree"/>'s lquery syntax to treat
       <literal>NOT</literal> (!) more logically (Filip Rembialkowski,
       Tom Lane, Nikita Glukhov)
       <ulink url="&commit_baseurl;70dc4c509">&sect;</ulink>
       <ulink url="&commit_baseurl;17ca06799">&sect;</ulink>
      </para>

      <para>
       Also allow non-* queries to use a numeric range ({}) of matches.
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-04-01 [949a9f043] Add support for binary I/O of ltree, lquery, and ltxtque
-->

      <para>
       Add support for binary I/O of <xref linkend="ltree"/>, lquery, and
       ltxtquery types (Nino Floris)
       <ulink url="&commit_baseurl;949a9f043">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
2020-03-08 [806eb92c0] Add an "absval" parameter to allow contrib/dict_int to i
-->

      <para>
       Add an option to <xref linkend="dict-int"/> to ignore the sign
       of integers (Jeff Janes)
       <ulink url="&commit_baseurl;806eb92c0">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Fujii Masao <fujii@postgresql.org>
2020-01-24 [d694e0bb7] Add pg_file_sync() to adminpack extension.
-->

      <para>
       Add <xref linkend="adminpack"/> function
       <function>pg_file_sync()</function> to allow fsync'ing a file
       (Fujii Masao)
       <ulink url="&commit_baseurl;d694e0bb7">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Michael Paquier <michael@paquier.xyz>
2019-09-12 [ddbd5d873] Add to pageinspect function to make t_infomask/t_infomas
Author: Author: Michael Paquier <michael@paquier.xyz>
2019-09-19 [58b4cb30a] Redesign pageinspect function printing infomask bits
-->

      <para>
       Add <xref linkend="pageinspect"/> functions to output
       <structfield>t_infomask</structfield>/<structfield>t_infomask2</structfield>
       values in human-readable format (Craig Ringer, Sawada Masahiko,
       Michael Paquier)
       <ulink url="&commit_baseurl;ddbd5d873">&sect;</ulink>
       <ulink url="&commit_baseurl;58b4cb30a">&sect;</ulink>
      </para>
     </listitem>

     <listitem>
<!--
Author: Peter Geoghegan <pg@bowt.ie>
2020-02-29 [93ee38ead] Teach pageinspect about nbtree deduplication.
-->

      <para>
       Add B-tree index de-duplication processing columns to pageinspect output
       (Peter Geoghegan)
       <ulink url="&commit_baseurl;93ee38ead">&sect;</ulink>
      </para>
     </listitem>

    </itemizedlist>

   </sect3>

  </sect2>

  <sect2 id="release-13-acknowledgements">
   <title>Acknowledgments</title>

   <para>
    The following individuals (in alphabetical order) have contributed to this
    release as patch authors, committers, reviewers, testers, or reporters of
    issues.
   </para>

   <simplelist>
    <member>Abhijit Menon-Sen</member>
    <member>Adam Lee</member>
    <member>Adam Scott</member>
    <member>Adé Heyward</member>
    <member>Adrien Nayrat</member>
    <member>Ahsan Hadi</member>
    <member>Alastair McKinley</member>
    <member>Aleksandr Parfenov</member>
    <member>Alex Aktsipetrov</member>
    <member>Alex Macy</member>
    <member>Alex Shulgin</member>
    <member>Alexander Korotkov</member>
    <member>Alexander Kukushkin</member>
    <member>Alexander Kuzmenkov</member>
    <member>Alexander Lakhin</member>
    <member>Alexey Bashtanov</member>
    <member>Alexey Kondratov</member>
    <member>Álvaro Herrera</member>
    <member>Amit Kapila</member>
    <member>Amit Khandekar</member>
    <member>Amit Langote</member>
    <member>Amul Sul</member>
    <member>Anastasia Lubennikova</member>
    <member>Andreas Joseph Krogh</member>
    <member>Andreas Karlsson</member>
    <member>Andreas Kunert</member>
    <member>Andreas Seltenreich</member>
    <member>Andrei Zubkov</member>
    <member>Andres Freund</member>
    <member>Andrew Bille</member>
    <member>Andrew Dunstan</member>
    <member>Andrew Gierth</member>
    <member>Andrey Borodin</member>
    <member>Andrey Klychkov</member>
    <member>Andrey Lepikhov</member>
    <member>Anna Akenteva</member>
    <member>Anna Endo</member>
    <member>Anthony Nowocien</member>
    <member>Anton Vlasov</member>
    <member>Antonin Houska</member>
    <member>Ants Aasma</member>
    <member>Arne Roland</member>
    <member>Arnold Müller</member>
    <member>Arseny Sher</member>
    <member>Arthur Nascimento</member>
    <member>Arthur Zakirov</member>
    <member>Ashutosh Bapat</member>
    <member>Ashutosh Sharma</member>
    <member>Ashwin Agrawal</member>
    <member>Asif Rehman</member>
    <member>Asim Praveen</member>
    <member>Atsushi Torikoshi</member>
    <member>Augustinas Jokubauskas</member>
    <member>Austin Drenski</member>
    <member>Basil Bourque</member>
    <member>Beena Emerson</member>
    <member>Ben Cornett</member>
    <member>Benjie Gillam</member>
    <member>Benoît Lobréau</member>
    <member>Bernd Helmle</member>
    <member>Bharath Rupireddy</member>
    <member>Bhargav Kamineni</member>
    <member>Binguo Bao</member>
    <member>Brad DeJong</member>
    <member>Brandur Leach</member>
    <member>Brent Bates</member>
    <member>Brian Williams</member>
    <member>Bruce Momjian</member>
    <member>Cameron Ezell</member>
    <member>Cary Huang</member>
    <member>Chapman Flack</member>
    <member>Charles Offenbacher</member>
    <member>Chen Huajun</member>
    <member>Chenyang Lu</member>
    <member>Chris Bandy</member>
    <member>Chris Travers</member>
    <member>Christoph Berg</member>
    <member>Christophe Courtois</member>
    <member>Corey Huinker</member>
    <member>Craig Ringer</member>
    <member>Cuiping Lin</member>
    <member>Dagfinn Ilmari Mannsåker</member>
    <member>Daniel Fiori</member>
    <member>Daniel Gustafsson</member>
    <member>Daniel Vérité</member>
    <member>Daniel Westermann</member>
    <member>Darafei Praliaskouski</member>
    <member>Daryl Waycott</member>
    <member>Dave Cramer</member>
    <member>David Christensen</member>
    <member>David Fetter</member>
    <member>David G. Johnston</member>
    <member>David Gilman</member>
    <member>David Harper</member>
    <member>David Rowley</member>
    <member>David Steele</member>
    <member>David Zhang</member>
    <member>Davinder Singh</member>
    <member>Dean Rasheed</member>
    <member>Denis Stuchalin</member>
    <member>Dent John</member>
    <member>Didier Gautheron</member>
    <member>Dilip Kumar</member>
    <member>Dmitry Belyavsky</member>
    <member>Dmitry Dolgov</member>
    <member>Dmitry Ivanov</member>
    <member>Dmitry Telpt</member>
    <member>Dmitry Uspenskiy</member>
    <member>Dominik Czarnota</member>
    <member>Dongming Liu</member>
    <member>Ed Morley</member>
    <member>Edmund Horner</member>
    <member>Emre Hasegeli</member>
    <member>Eric Gillum</member>
    <member>Erik Rijkers</member>
    <member>Erwin Brandstetter</member>
    <member>Ethan Waldo</member>
    <member>Etsuro Fujita</member>
    <member>Eugen Konkov</member>
    <member>Euler Taveira</member>
    <member>Fabien Coelho</member>
    <member>Fabrízio de Royes Mello</member>
    <member>Felix Lechner</member>
    <member>Filip Janus</member>
    <member>Filip Rembialkowski</member>
    <member>Frank Gagnepain</member>
    <member>Georgios Kokolatos</member>
    <member>Gilles Darold</member>
    <member>Greg Nancarrow</member>
    <member>Grigory Smolkin</member>
    <member>Guancheng Luo</member>
    <member>Guillaume Lelarge</member>
    <member>Hadi Moshayedi</member>
    <member>Haiying Tang</member>
    <member>Hamid Akhtar</member>
    <member>Hans Buschmann</member>
    <member>Hao Wu</member>
    <member>Haribabu Kommi</member>
    <member>Haruka Takatsuka</member>
    <member>Heath Lord</member>
    <member>Heikki Linnakangas</member>
    <member>Himanshu Upadhyaya</member>
    <member>Hironobu Suzuki</member>
    <member>Hugh McMaster</member>
    <member>Hugh Ranalli</member>
    <member>Hugh Wang</member>
    <member>Ian Barwick</member>
    <member>Ibrar Ahmed</member>
    <member>Ildar Musin</member>
    <member>Insung Moon</member>
    <member>Ireneusz Pluta</member>
    <member>Isaac Morland</member>
    <member>Ivan Kartyshov</member>
    <member>Ivan Panchenko</member>
    <member>Ivan Sergio Borgonovo</member>
    <member>Jaime Casanova</member>
    <member>James Coleman</member>
    <member>James Gray</member>
    <member>James Hunter</member>
    <member>James Inform</member>
    <member>James Lucas</member>
    <member>Jan Mussler</member>
    <member>Jaroslav Sivy</member>
    <member>Jeevan Chalke</member>
    <member>Jeevan Ladhe</member>
    <member>Jeff Davis</member>
    <member>Jeff Janes</member>
    <member>Jehan-Guillaume de Rorthais</member>
    <member>Jeremy Evans</member>
    <member>Jeremy Schneider</member>
    <member>Jeremy Smith</member>
    <member>Jerry Sievers</member>
    <member>Jesper Pedersen</member>
    <member>Jesse Kinkead</member>
    <member>Jesse Zhang</member>
    <member>Jian Zhang</member>
    <member>Jie Zhang</member>
    <member>Jim Nasby</member>
    <member>Jimmy Yih</member>
    <member>Jobin Augustine</member>
    <member>Joe Conway</member>
    <member>John Hsu</member>
    <member>John Naylor</member>
    <member>Jon Jensen</member>
    <member>Jonathan Katz</member>
    <member>Jorge Gustavo Rocha</member>
    <member>Josef Šimánek</member>
    <member>Joseph Nahmias</member>
    <member>Juan José Santamaría Flecha</member>
    <member>Julian Backes</member>
    <member>Julien Rouhaud</member>
    <member>Jürgen Purtz</member>
    <member>Justin King</member>
    <member>Justin Pryzby</member>
    <member>Karl O. Pinc</member>
    <member>Keisuke Kuroda</member>
    <member>Keith Fiske</member>
    <member>Kelly Min</member>
    <member>Ken Tanzer</member>
    <member>Kirill Bychik</member>
    <member>Kirk Jamison</member>
    <member>Konstantin Knizhnik</member>
    <member>Kuntal Ghosh</member>
    <member>Kyle Kingsbury</member>
    <member>Kyotaro Horiguchi</member>
    <member>Lars Kanis</member>
    <member>Laurenz Albe</member>
    <member>Leif Gunnar Erlandsen</member>
    <member>Li Japin</member>
    <member>Liudmila Mantrova</member>
    <member>Lucas Viecelli</member>
    <member>Luis M. Carril</member>
    <member>Lukáš Sobotka</member>
    <member>Maciek Sakrejda</member>
    <member>Magnus Hagander</member>
    <member>Mahadevan Ramachandran</member>
    <member>Mahendra Singh Thalor</member>
    <member>Manuel Rigger</member>
    <member>Marc Munro</member>
    <member>Marcos David</member>
    <member>Marina Polyakova</member>
    <member>Mark Dilger</member>
    <member>Mark Wong</member>
    <member>Marko Tiikkaja</member>
    <member>Markus Winand</member>
    <member>Marti Raudsepp</member>
    <member>Martijn van Oosterhout</member>
    <member>Masahiko Sawada</member>
    <member>Masahiro Ikeda</member>
    <member>Masao Fujii</member>
    <member>Mateusz Guzik</member>
    <member>Matt Jibson</member>
    <member>Matteo Beccati</member>
    <member>Maxence Ahlouche</member>
    <member>Melanie Plageman</member>
    <member>Michael Banck</member>
    <member>Michael Luo</member>
    <member>Michael Meskes</member>
    <member>Michael Paquier</member>
    <member>Michail Nikolaev</member>
    <member>Mike Palmiotto</member>
    <member>Mithun Cy</member>
    <member>Movead Li</member>
    <member>Nathan Bossart</member>
    <member>Nazli Ugur Koyluoglu</member>
    <member>Neha Sharma</member>
    <member>Nicola Contu</member>
    <member>Nicolás Alvarez</member>
    <member>Nikhil Sontakke</member>
    <member>Nikita Glukhov</member>
    <member>Nikolay Shaplov</member>
    <member>Nino Floris</member>
    <member>Noah Misch</member>
    <member>Noriyoshi Shinoda</member>
    <member>Oleg Bartunov</member>
    <member>Oleg Samoilov</member>
    <member>Oleksii Kliukin</member>
    <member>Ondrej Jirman</member>
    <member>Panagiotis Mavrogiorgos</member>
    <member>Pascal Legrand</member>
    <member>Patrick McHardy</member>
    <member>Paul Guo</member>
    <member>Paul Jungwirth</member>
    <member>Paul Ramsey</member>
    <member>Paul Sivash</member>
    <member>Paul Spencer</member>
    <member>Pavan Deolasee</member>
    <member>Pavel Borisov</member>
    <member>Pavel Luzanov</member>
    <member>Pavel Stehule</member>
    <member>Pavel Suderevsky</member>
    <member>Peifeng Qiu</member>
    <member>Pengzhou Tang</member>
    <member>Peter Billen</member>
    <member>Peter Eisentraut</member>
    <member>Peter Geoghegan</member>
    <member>Peter Smith</member>
    <member>Petr Fedorov</member>
    <member>Petr Jelínek</member>
    <member>Phil Bayer</member>
    <member>Philip Semanchuk</member>
    <member>Philippe Beaudoin</member>
    <member>Pierre Ducroquet</member>
    <member>Pierre Giraud</member>
    <member>Piotr Gabriel Kosinski</member>
    <member>Piotr Wlodarczyk</member>
    <member>Prabhat Sahu</member>
    <member>Quan Zongliang</member>
    <member>Quentin Rameau</member>
    <member>Rafael Castro</member>
    <member>Rafia Sabih</member>
    <member>Raj Mohite</member>
    <member>Rajkumar Raghuwanshi</member>
    <member>Ramanarayana M</member>
    <member>Ranier Vilela</member>
    <member>Rares Salcudean</member>
    <member>Raúl Marín Rodríguez</member>
    <member>Raymond Martin</member>
    <member>Reijo Suhonen</member>
    <member>Richard Guo</member>
    <member>Robert Ford</member>
    <member>Robert Haas</member>
    <member>Robert Kahlert</member>
    <member>Robert Treat</member>
    <member>Robin Abbi</member>
    <member>Robins Tharakan</member>
    <member>Roger Harkavy</member>
    <member>Roman Peshkurov</member>
    <member>Rui DeSousa</member>
    <member>Rui Hai Jiang</member>
    <member>Rushabh Lathia</member>
    <member>Ryan Lambert</member>
    <member>Ryohei Takahashi</member>
    <member>Scott Ribe</member>
    <member>Sean Farrell</member>
    <member>Sehrope Sarkuni</member>
    <member>Sergei Agalakov</member>
    <member>Sergei Kornilov</member>
    <member>Sergey Cherkashin</member>
    <member>Shawn Debnath</member>
    <member>Shawn Wang</member>
    <member>Shay Rojansky</member>
    <member>Shenhao Wang</member>
    <member>Simon Riggs</member>
    <member>Slawomir Chodnicki</member>
    <member>Soumyadeep Chakraborty</member>
    <member>Stéphane Lorek</member>
    <member>Stephen Frost</member>
    <member>Steve Rogerson</member>
    <member>Steven Winfield</member>
    <member>Surafel Temesgen</member>
    <member>Suraj Kharage</member>
    <member>Takanori Asaba</member>
    <member>Takao Fujii</member>
    <member>Takayuki Tsunakawa</member>
    <member>Takuma Hoshiai</member>
    <member>Tatsuhito Kasahara</member>
    <member>Tatsuo Ishii</member>
    <member>Tatsuro Yamada</member>
    <member>Taylor Vesely</member>
    <member>Teodor Sigaev</member>
    <member>Tham Nguyen</member>
    <member>Thibaut Madelaine</member>
    <member>Thom Brown</member>
    <member>Thomas Kellerer</member>
    <member>Thomas Munro</member>
    <member>Tiago Anastacio</member>
    <member>Tim Clarke</member>
    <member>Tim Möhlmann</member>
    <member>Tom Ellis</member>
    <member>Tom Gottfried</member>
    <member>Tom Lane</member>
    <member>Tomas Vondra</member>
    <member>Tuomas Leikola</member>
    <member>Tushar Ahuja</member>
    <member>Victor Wagner</member>
    <member>Victor Yegorov</member>
    <member>Vignesh C</member>
    <member>Vik Fearing</member>
    <member>Vinay Banakar</member>
    <member>Vladimir Leskov</member>
    <member>Vladimir Sitnikov</member>
    <member>Vyacheslav Makarov</member>
    <member>Vyacheslav Shablistyy</member>
    <member>Will Leinweber</member>
    <member>William Crowell</member>
    <member>Wyatt Alt</member>
    <member>Yang Xiao</member>
    <member>Yaroslav Schekin</member>
    <member>Yi Huang</member>
    <member>Yigong Hu</member>
    <member>Yoann La Cancellera</member>
    <member>Yoshikazu Imai</member>
    <member>Yu Kimura</member>
    <member>Yugo Nagata</member>
    <member>Yuli Khodorkovskiy</member>
    <member>Yusuke Egashira</member>
    <member>Yuya Watari</member>
    <member>Yuzuko Hosoya</member>
    <member>ZhenHua Cai</member>
   </simplelist>
  </sect2>

 </sect1>
