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authorTom Lane <tgl@sss.pgh.pa.us>2008-06-04 03:16:23 +0000
committerTom Lane <tgl@sss.pgh.pa.us>2008-06-04 03:16:23 +0000
commitc1e9481c4fb2d525707b743bb94856d1ad7855ee (patch)
tree7450a9f14e75f35761b16159458b1bec31f65aa1
parent21a599a62262dbe395b0bc55caeca93dd474b066 (diff)
downloadpostgresql-c1e9481c4fb2d525707b743bb94856d1ad7855ee.tar.gz
postgresql-c1e9481c4fb2d525707b743bb94856d1ad7855ee.zip
Draft release notes for upcoming back-branch updates.
-rw-r--r--doc/src/sgml/release.sgml833
1 files changed, 830 insertions, 3 deletions
diff --git a/doc/src/sgml/release.sgml b/doc/src/sgml/release.sgml
index 21dfd6a66f3..0f0bc42e5ce 100644
--- a/doc/src/sgml/release.sgml
+++ b/doc/src/sgml/release.sgml
@@ -1,4 +1,4 @@
-<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.488.2.18 2008/04/21 09:45:12 mha Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.488.2.19 2008/06/04 03:16:23 tgl Exp $ -->
<!--
Typical markup:
@@ -63,6 +63,201 @@ do it for earlier branch release files.
review, so each item is truly a community effort.
</para>
+ <sect1 id="release-8-2-8">
+ <title>Release 8.2.8</title>
+
+ <note>
+ <title>Release date</title>
+ <simpara>2008-06-09</simpara>
+ </note>
+
+ <para>
+ This release contains a variety of fixes from 8.2.7.
+ For information about new features in the 8.2 major release, see
+ <xref linkend="release-8-2">.
+ </para>
+
+ <sect2>
+ <title>Migration to Version 8.2.8</title>
+
+ <para>
+ A dump/restore is not required for those running 8.2.X.
+ However, if you are upgrading from a version earlier than 8.2.7,
+ see the release notes for 8.2.7.
+ </para>
+
+ </sect2>
+
+ <sect2>
+ <title>Changes</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Fix <literal>ERRORDATA_STACK_SIZE exceeded</literal> crash that
+ occurred on Windows when using UTF-8 database encoding and a different
+ client encoding (Tom)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <command>ALTER TABLE ADD COLUMN ... PRIMARY KEY</> so that the new
+ column is correctly checked to see if it's been initialized to all
+ non-nulls (Brendan Jurd)
+ </para>
+
+ <para>
+ Previous versions neglected to check this requirement at all.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix possible <command>CREATE TABLE</> failure when inheriting the
+ <quote>same</> constraint from multiple parent relations that
+ inherited that constraint from a common ancestor (Tom)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <function>pg_get_ruledef()</> to show the alias, if any, attached
+ to the target table of an <command>UPDATE</> or <command>DELETE</>
+ (Tom)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix GIN bug that could result in a <literal>too many LWLocks
+ taken</literal> failure (Teodor)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Avoid possible crash when decompressing corrupted data
+ (Zdenek Kotala)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Repair two places where SIGTERM exit of a backend could leave corrupted
+ state in shared memory (Tom)
+ </para>
+
+ <para>
+ Neither case is very important if SIGTERM is used to shut down the
+ whole database cluster together, but there was a problem if someone
+ tried to SIGTERM individual backends.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix conversions between ISO-8859-5 and other encodings to handle
+ Cyrillic <quote>Yo</> characters (<literal>e</> and <literal>E</> with
+ two dots) (Sergey Burladyan)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix several datatype input functions, notably <function>array_in()</>,
+ that were allowing unused bytes in their results to contain
+ uninitialized, unpredictable values (Tom)
+ </para>
+
+ <para>
+ This could lead to failures in which two apparently identical literal
+ values were not seen as equal, resulting in the parser complaining
+ about unmatched <literal>ORDER BY</> and <literal>DISTINCT</>
+ expressions.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix a corner case in regular-expression substring matching
+ (<literal>substring(<replaceable>string</> from
+ <replaceable>pattern</>)</literal>) (Tom)
+ </para>
+
+ <para>
+ The problem occurs when there is a match to the pattern overall but
+ the user has specified a parenthesized subexpression and that
+ subexpression hasn't got a match. An example is
+ <literal>substring('foo' from 'foo(bar)?')</>.
+ This should return NULL, since <literal>(bar)</> isn't matched, but
+ it was mistakenly returning the whole-pattern match instead (ie,
+ <literal>foo</>).
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Update time zone data files to <application>tzdata</> release 2008c (for
+ DST law changes in Morocco, Iraq, Choibalsan, Pakistan, Syria, Cuba, and
+ Argentina/San_Luis)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix incorrect result from <application>ecpg</>'s
+ <function>PGTYPEStimestamp_sub()</> function (Michael)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix broken GiST comparison function for <filename>contrib/tsearch2</>'s
+ <type>tsquery</> type (Teodor)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix possible crashes in <filename>contrib/cube</> functions (Tom)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix core dump in <filename>contrib/xml2</>'s
+ <function>xpath_table()</> function when the input query returns a
+ NULL value (Tom)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <filename>contrib/xml2</>'s makefile to not override
+ <literal>CFLAGS</> (Tom)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <literal>DatumGetBool</> macro to not fail with <application>gcc</>
+ 4.3 (Tom)
+ </para>
+
+ <para>
+ This problem affects <quote>old style</> (V0) C functions that
+ return boolean. The fix is already in 8.3, but the need to
+ back-patch it was not realized at the time.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect2>
+ </sect1>
+
<sect1 id="release-8-2-7">
<title>Release 8.2.7</title>
@@ -147,7 +342,7 @@ do it for earlier branch release files.
</para>
<para>
- This was formerly allowed but trying to do it had various unpleasant
+ This was formerly allowed but trying to do it had various unpleasant
consequences, notably that the originating backend could not exit
as long as an <command>UNLISTEN</> remained uncommitted.
</para>
@@ -323,7 +518,7 @@ do it for earlier branch release files.
<para>
This failure has only been observed to occur when a user-defined
datatype's output routine issues a NOTICE, but there is no
- guaranteee it couldn't happen due to other causes.
+ guarantee it couldn't happen due to other causes.
</para>
</listitem>
@@ -3841,6 +4036,256 @@ do it for earlier branch release files.
</sect2>
</sect1>
+ <sect1 id="release-8-1-12">
+ <title>Release 8.1.12</title>
+
+ <note>
+ <title>Release date</title>
+ <simpara>2008-06-09</simpara>
+ </note>
+
+ <para>
+ This release contains a variety of fixes from 8.1.11.
+ For information about new features in the 8.1 major release, see
+ <xref linkend="release-8-1">.
+ </para>
+
+ <sect2>
+ <title>Migration to Version 8.1.12</title>
+
+ <para>
+ A dump/restore is not required for those running 8.1.X.
+ However, if you are upgrading from a version earlier than 8.1.2,
+ see the release notes for 8.1.2.
+ </para>
+
+ </sect2>
+
+ <sect2>
+ <title>Changes</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Fix <command>ALTER TABLE ADD COLUMN ... PRIMARY KEY</> so that the new
+ column is correctly checked to see if it's been initialized to all
+ non-nulls (Brendan Jurd)
+ </para>
+
+ <para>
+ Previous versions neglected to check this requirement at all.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix possible <command>CREATE TABLE</> failure when inheriting the
+ <quote>same</> constraint from multiple parent relations that
+ inherited that constraint from a common ancestor (Tom)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix conversions between ISO-8859-5 and other encodings to handle
+ Cyrillic <quote>Yo</> characters (<literal>e</> and <literal>E</> with
+ two dots) (Sergey Burladyan)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix a few datatype input functions
+ that were allowing unused bytes in their results to contain
+ uninitialized, unpredictable values (Tom)
+ </para>
+
+ <para>
+ This could lead to failures in which two apparently identical literal
+ values were not seen as equal, resulting in the parser complaining
+ about unmatched <literal>ORDER BY</> and <literal>DISTINCT</>
+ expressions.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix a corner case in regular-expression substring matching
+ (<literal>substring(<replaceable>string</> from
+ <replaceable>pattern</>)</literal>) (Tom)
+ </para>
+
+ <para>
+ The problem occurs when there is a match to the pattern overall but
+ the user has specified a parenthesized subexpression and that
+ subexpression hasn't got a match. An example is
+ <literal>substring('foo' from 'foo(bar)?')</>.
+ This should return NULL, since <literal>(bar)</> isn't matched, but
+ it was mistakenly returning the whole-pattern match instead (ie,
+ <literal>foo</>).
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Update time zone data files to <application>tzdata</> release 2008c (for
+ DST law changes in Morocco, Iraq, Choibalsan, Pakistan, Syria, Cuba,
+ Argentina/San_Luis, and Chile)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix incorrect result from <application>ecpg</>'s
+ <function>PGTYPEStimestamp_sub()</> function (Michael)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix core dump in <filename>contrib/xml2</>'s
+ <function>xpath_table()</> function when the input query returns a
+ NULL value (Tom)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <filename>contrib/xml2</>'s makefile to not override
+ <literal>CFLAGS</> (Tom)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <literal>DatumGetBool</> macro to not fail with <application>gcc</>
+ 4.3 (Tom)
+ </para>
+
+ <para>
+ This problem affects <quote>old style</> (V0) C functions that
+ return boolean. The fix is already in 8.3, but the need to
+ back-patch it was not realized at the time.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix longstanding <command>LISTEN</>/<command>NOTIFY</>
+ race condition (Tom)
+ </para>
+
+ <para>
+ In rare cases a session that had just executed a
+ <command>LISTEN</> might not get a notification, even though
+ one would be expected because the concurrent transaction executing
+ <command>NOTIFY</> was observed to commit later.
+ </para>
+
+ <para>
+ A side effect of the fix is that a transaction that has executed
+ a not-yet-committed <command>LISTEN</> command will not see any
+ row in <structname>pg_listener</> for the <command>LISTEN</>,
+ should it choose to look; formerly it would have. This behavior
+ was never documented one way or the other, but it is possible that
+ some applications depend on the old behavior.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Disallow <command>LISTEN</> and <command>UNLISTEN</> within a
+ prepared transaction (Tom)
+ </para>
+
+ <para>
+ This was formerly allowed but trying to do it had various unpleasant
+ consequences, notably that the originating backend could not exit
+ as long as an <command>UNLISTEN</> remained uncommitted.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix rare crash when an error occurs during a query using a hash index
+ (Heikki)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix input of datetime values for February 29 in years BC (Tom)
+ </para>
+
+ <para>
+ The former coding was mistaken about which years were leap years.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <quote>unrecognized node type</> error in some variants of
+ <command>ALTER OWNER</> (Tom)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_ctl</> to correctly extract the postmaster's port
+ number from command-line options (Itagaki Takahiro, Tom)
+ </para>
+
+ <para>
+ Previously, <literal>pg_ctl start -w</> could try to contact the
+ postmaster on the wrong port, leading to bogus reports of startup
+ failure.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Use <option>-fwrapv</> to defend against possible misoptimization
+ in recent <application>gcc</> versions (Tom)
+ </para>
+
+ <para>
+ This is known to be necessary when building <productname>PostgreSQL</>
+ with <application>gcc</> 4.3 or later.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix display of constant expressions in <literal>ORDER BY</>
+ and <literal>GROUP BY</> (Tom)
+ </para>
+
+ <para>
+ An explictly casted constant would be shown incorrectly. This could
+ for example lead to corruption of a view definition during
+ dump and reload.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>libpq</> to handle NOTICE messages correctly
+ during COPY OUT (Tom)
+ </para>
+
+ <para>
+ This failure has only been observed to occur when a user-defined
+ datatype's output routine issues a NOTICE, but there is no
+ guarantee it couldn't happen due to other causes.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect2>
+ </sect1>
+
<sect1 id="release-8-1-11">
<title>Release 8.1.11</title>
@@ -7269,6 +7714,243 @@ psql -t -f fixseq.sql db1 | psql -e db1
</sect2>
</sect1>
+ <sect1 id="release-8-0-16">
+ <title>Release 8.0.16</title>
+
+ <note>
+ <title>Release date</title>
+ <simpara>2008-06-09</simpara>
+ </note>
+
+ <para>
+ This release contains a variety of fixes from 8.0.15.
+ For information about new features in the 8.0 major release, see
+ <xref linkend="release-8-0">.
+ </para>
+
+ <sect2>
+ <title>Migration to Version 8.0.16</title>
+
+ <para>
+ A dump/restore is not required for those running 8.0.X.
+ However, if you are upgrading from a version earlier than 8.0.6,
+ see the release notes for 8.0.6.
+ </para>
+
+ </sect2>
+
+ <sect2>
+ <title>Changes</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Fix <command>ALTER TABLE ADD COLUMN ... PRIMARY KEY</> so that the new
+ column is correctly checked to see if it's been initialized to all
+ non-nulls (Brendan Jurd)
+ </para>
+
+ <para>
+ Previous versions neglected to check this requirement at all.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix possible <command>CREATE TABLE</> failure when inheriting the
+ <quote>same</> constraint from multiple parent relations that
+ inherited that constraint from a common ancestor (Tom)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix conversions between ISO-8859-5 and other encodings to handle
+ Cyrillic <quote>Yo</> characters (<literal>e</> and <literal>E</> with
+ two dots) (Sergey Burladyan)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix a few datatype input functions
+ that were allowing unused bytes in their results to contain
+ uninitialized, unpredictable values (Tom)
+ </para>
+
+ <para>
+ This could lead to failures in which two apparently identical literal
+ values were not seen as equal, resulting in the parser complaining
+ about unmatched <literal>ORDER BY</> and <literal>DISTINCT</>
+ expressions.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix a corner case in regular-expression substring matching
+ (<literal>substring(<replaceable>string</> from
+ <replaceable>pattern</>)</literal>) (Tom)
+ </para>
+
+ <para>
+ The problem occurs when there is a match to the pattern overall but
+ the user has specified a parenthesized subexpression and that
+ subexpression hasn't got a match. An example is
+ <literal>substring('foo' from 'foo(bar)?')</>.
+ This should return NULL, since <literal>(bar)</> isn't matched, but
+ it was mistakenly returning the whole-pattern match instead (ie,
+ <literal>foo</>).
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Update time zone data files to <application>tzdata</> release 2008c (for
+ DST law changes in Morocco, Iraq, Choibalsan, Pakistan, Syria, Cuba,
+ Argentina/San_Luis, and Chile)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix incorrect result from <application>ecpg</>'s
+ <function>PGTYPEStimestamp_sub()</> function (Michael)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix core dump in <filename>contrib/xml2</>'s
+ <function>xpath_table()</> function when the input query returns a
+ NULL value (Tom)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <filename>contrib/xml2</>'s makefile to not override
+ <literal>CFLAGS</> (Tom)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <literal>DatumGetBool</> macro to not fail with <application>gcc</>
+ 4.3 (Tom)
+ </para>
+
+ <para>
+ This problem affects <quote>old style</> (V0) C functions that
+ return boolean. The fix is already in 8.3, but the need to
+ back-patch it was not realized at the time.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix longstanding <command>LISTEN</>/<command>NOTIFY</>
+ race condition (Tom)
+ </para>
+
+ <para>
+ In rare cases a session that had just executed a
+ <command>LISTEN</> might not get a notification, even though
+ one would be expected because the concurrent transaction executing
+ <command>NOTIFY</> was observed to commit later.
+ </para>
+
+ <para>
+ A side effect of the fix is that a transaction that has executed
+ a not-yet-committed <command>LISTEN</> command will not see any
+ row in <structname>pg_listener</> for the <command>LISTEN</>,
+ should it choose to look; formerly it would have. This behavior
+ was never documented one way or the other, but it is possible that
+ some applications depend on the old behavior.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix rare crash when an error occurs during a query using a hash index
+ (Heikki)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix input of datetime values for February 29 in years BC (Tom)
+ </para>
+
+ <para>
+ The former coding was mistaken about which years were leap years.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <quote>unrecognized node type</> error in some variants of
+ <command>ALTER OWNER</> (Tom)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_ctl</> to correctly extract the postmaster's port
+ number from command-line options (Itagaki Takahiro, Tom)
+ </para>
+
+ <para>
+ Previously, <literal>pg_ctl start -w</> could try to contact the
+ postmaster on the wrong port, leading to bogus reports of startup
+ failure.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Use <option>-fwrapv</> to defend against possible misoptimization
+ in recent <application>gcc</> versions (Tom)
+ </para>
+
+ <para>
+ This is known to be necessary when building <productname>PostgreSQL</>
+ with <application>gcc</> 4.3 or later.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix display of constant expressions in <literal>ORDER BY</>
+ and <literal>GROUP BY</> (Tom)
+ </para>
+
+ <para>
+ An explictly casted constant would be shown incorrectly. This could
+ for example lead to corruption of a view definition during
+ dump and reload.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>libpq</> to handle NOTICE messages correctly
+ during COPY OUT (Tom)
+ </para>
+
+ <para>
+ This failure has only been observed to occur when a user-defined
+ datatype's output routine issues a NOTICE, but there is no
+ guarantee it couldn't happen due to other causes.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect2>
+ </sect1>
+
<sect1 id="release-8-0-15">
<title>Release 8.0.15</title>
@@ -11126,6 +11808,151 @@ typedefs (Michael)</para></listitem>
</sect2>
</sect1>
+ <sect1 id="release-7-4-20">
+ <title>Release 7.4.20</title>
+
+ <note>
+ <title>Release date</title>
+ <simpara>2008-06-09</simpara>
+ </note>
+
+ <para>
+ This release contains a variety of fixes from 7.4.19.
+ For information about new features in the 7.4 major release, see
+ <xref linkend="release-7-4">.
+ </para>
+
+ <sect2>
+ <title>Migration to Version 7.4.20</title>
+
+ <para>
+ A dump/restore is not required for those running 7.4.X.
+ However, if you are upgrading from a version earlier than 7.4.11,
+ see the release notes for 7.4.11.
+ </para>
+
+ </sect2>
+
+ <sect2>
+ <title>Changes</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Fix conversions between ISO-8859-5 and other encodings to handle
+ Cyrillic <quote>Yo</> characters (<literal>e</> and <literal>E</> with
+ two dots) (Sergey Burladyan)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix a few datatype input functions
+ that were allowing unused bytes in their results to contain
+ uninitialized, unpredictable values (Tom)
+ </para>
+
+ <para>
+ This could lead to failures in which two apparently identical literal
+ values were not seen as equal, resulting in the parser complaining
+ about unmatched <literal>ORDER BY</> and <literal>DISTINCT</>
+ expressions.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix a corner case in regular-expression substring matching
+ (<literal>substring(<replaceable>string</> from
+ <replaceable>pattern</>)</literal>) (Tom)
+ </para>
+
+ <para>
+ The problem occurs when there is a match to the pattern overall but
+ the user has specified a parenthesized subexpression and that
+ subexpression hasn't got a match. An example is
+ <literal>substring('foo' from 'foo(bar)?')</>.
+ This should return NULL, since <literal>(bar)</> isn't matched, but
+ it was mistakenly returning the whole-pattern match instead (ie,
+ <literal>foo</>).
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix incorrect result from <application>ecpg</>'s
+ <function>PGTYPEStimestamp_sub()</> function (Michael)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <literal>DatumGetBool</> macro to not fail with <application>gcc</>
+ 4.3 (Tom)
+ </para>
+
+ <para>
+ This problem affects <quote>old style</> (V0) C functions that
+ return boolean. The fix is already in 8.3, but the need to
+ back-patch it was not realized at the time.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix longstanding <command>LISTEN</>/<command>NOTIFY</>
+ race condition (Tom)
+ </para>
+
+ <para>
+ In rare cases a session that had just executed a
+ <command>LISTEN</> might not get a notification, even though
+ one would be expected because the concurrent transaction executing
+ <command>NOTIFY</> was observed to commit later.
+ </para>
+
+ <para>
+ A side effect of the fix is that a transaction that has executed
+ a not-yet-committed <command>LISTEN</> command will not see any
+ row in <structname>pg_listener</> for the <command>LISTEN</>,
+ should it choose to look; formerly it would have. This behavior
+ was never documented one way or the other, but it is possible that
+ some applications depend on the old behavior.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix display of constant expressions in <literal>ORDER BY</>
+ and <literal>GROUP BY</> (Tom)
+ </para>
+
+ <para>
+ An explictly casted constant would be shown incorrectly. This could
+ for example lead to corruption of a view definition during
+ dump and reload.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>libpq</> to handle NOTICE messages correctly
+ during COPY OUT (Tom)
+ </para>
+
+ <para>
+ This failure has only been observed to occur when a user-defined
+ datatype's output routine issues a NOTICE, but there is no
+ guarantee it couldn't happen due to other causes.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect2>
+ </sect1>
+
<sect1 id="release-7-4-19">
<title>Release 7.4.19</title>