Release notes for 9.3.5, 9.2.9, 9.1.14, 9.0.18, 8.4.22.

doc/src/sgml/release-8.4.sgml

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+ <sect1 id="release-8-4-22">
+  <title>Release 8.4.22</title>
+
+  <note>
+  <title>Release Date</title>
+  <simpara>2014-07-24</simpara>
+  </note>
+
+  <para>
+   This release contains a variety of fixes from 8.4.21.
+   For information about new features in the 8.4 major release, see
+   <xref linkend="release-8-4">.
+  </para>
+
+  <para>
+   This is expected to be the last <productname>PostgreSQL</> release
+   in the 8.4.X series.  Users are encouraged to update to a newer
+   release branch soon.
+  </para>
+
+  <sect2>
+   <title>Migration to Version 8.4.22</title>
+
+   <para>
+    A dump/restore is not required for those running 8.4.X.
+   </para>
+
+   <para>
+    However, this release corrects an index corruption problem in some GiST
+    indexes.  See the first changelog entry below to find out whether your
+    installation has been affected and what steps you should take if so.
+   </para>
+
+   <para>
+    Also, if you are upgrading from a version earlier than 8.4.19,
+    see <xref linkend="release-8-4-19">.
+   </para>
+
+  </sect2>
+
+  <sect2>
+   <title>Changes</title>
+
+   <itemizedlist>
+
+    <listitem>
+     <para>
+      Correctly initialize padding bytes in <filename>contrib/btree_gist</>
+      indexes on <type>bit</> columns (Heikki Linnakangas)
+     </para>
+
+     <para>
+      This error could result in incorrect query results due to values that
+      should compare equal not being seen as equal.
+      Users with GiST indexes on <type>bit</> or <type>bit varying</>
+      columns should <command>REINDEX</> those indexes after installing this
+      update.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Protect against torn pages when deleting GIN list pages (Heikki
+      Linnakangas)
+     </para>
+
+     <para>
+      This fix prevents possible index corruption if a system crash occurs
+      while the page update is being written to disk.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix possibly-incorrect cache invalidation during nested calls
+      to <function>ReceiveSharedInvalidMessages</> (Andres Freund)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Don't assume a subquery's output is unique if there's a set-returning
+      function in its targetlist (David Rowley)
+     </para>
+
+     <para>
+      This oversight could lead to misoptimization of constructs
+      like <literal>WHERE x IN (SELECT y, generate_series(1,10) FROM t GROUP
+      BY y)</literal>.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix failure to detoast fields in composite elements of structured
+      types (Tom Lane)
+     </para>
+
+     <para>
+      This corrects cases where TOAST pointers could be copied into other
+      tables without being dereferenced.  If the original data is later
+      deleted, it would lead to errors like <quote>missing chunk number 0
+      for toast value ...</> when the now-dangling pointer is used.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <quote>record type has not been registered</> failures with
+      whole-row references to the output of Append plan nodes (Tom Lane)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix possible crash when invoking a user-defined function while
+      rewinding a cursor (Tom Lane)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix query-lifespan memory leak while evaluating the arguments for a
+      function in <literal>FROM</> (Tom Lane)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix session-lifespan memory leaks in regular-expression processing
+      (Tom Lane, Arthur O'Dwyer, Greg Stark)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix data encoding error in <filename>hungarian.stop</> (Tom Lane)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix liveness checks for rows that were inserted in the current
+      transaction and then deleted by a now-rolled-back subtransaction
+      (Andres Freund)
+     </para>
+
+     <para>
+      This could cause problems (at least spurious warnings, and at worst an
+      infinite loop) if <command>CREATE INDEX</> or <command>CLUSTER</> were
+      done later in the same transaction.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Clear <structname>pg_stat_activity</>.<structfield>xact_start</>
+      during <command>PREPARE TRANSACTION</> (Andres Freund)
+     </para>
+
+     <para>
+      After the <command>PREPARE</>, the originating session is no longer in
+      a transaction, so it should not continue to display a transaction
+      start time.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <command>REASSIGN OWNED</> to not fail for text search objects
+      (&Aacute;lvaro Herrera)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Block signals during postmaster startup (Tom Lane)
+     </para>
+
+     <para>
+      This ensures that the postmaster will properly clean up after itself
+      if, for example, it receives <systemitem>SIGINT</> while still
+      starting up.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Secure Unix-domain sockets of temporary postmasters started during
+      <literal>make check</> (Noah Misch)
+     </para>
+
+     <para>
+      Any local user able to access the socket file could connect as the
+      server's bootstrap superuser, then proceed to execute arbitrary code as
+      the operating-system user running the test, as we previously noted in
+      CVE-2014-0067.  This change defends against that risk by placing the
+      server's socket in a temporary, mode 0700 subdirectory
+      of <filename>/tmp</>.  The hazard remains however on platforms where
+      Unix sockets are not supported, notably Windows, because then the
+      temporary postmaster must accept local TCP connections.
+     </para>
+
+     <para>
+      A useful side effect of this change is to simplify
+      <literal>make check</> testing in builds that
+      override <literal>DEFAULT_PGSOCKET_DIR</>.  Popular non-default values
+      like <filename>/var/run/postgresql</> are often not writable by the
+      build user, requiring workarounds that will no longer be necessary.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      On Windows, allow new sessions to absorb values of PGC_BACKEND
+      parameters (such as <xref linkend="guc-log-connections">) from the
+      configuration file (Amit Kapila)
+     </para>
+
+     <para>
+      Previously, if such a parameter were changed in the file post-startup,
+      the change would have no effect.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Properly quote executable path names on Windows (Nikhil Deshpande)
+     </para>
+
+     <para>
+      This oversight could cause <application>initdb</>
+      and <application>pg_upgrade</> to fail on Windows, if the installation
+      path contained both spaces and <literal>@</> signs.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix linking of <application>libpython</> on OS X (Tom Lane)
+     </para>
+
+     <para>
+      The method we previously used can fail with the Python library
+      supplied by Xcode 5.0 and later.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Avoid buffer bloat in <application>libpq</> when the server
+      consistently sends data faster than the client can absorb it
+      (Shin-ichi Morita, Tom Lane)
+     </para>
+
+     <para>
+      <application>libpq</> could be coerced into enlarging its input buffer
+      until it runs out of memory (which would be reported misleadingly
+      as <quote>lost synchronization with server</>).  Under ordinary
+      circumstances it's quite far-fetched that data could be continuously
+      transmitted more quickly than the <function>recv()</> loop can
+      absorb it, but this has been observed when the client is artificially
+      slowed by scheduler constraints.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Ensure that LDAP lookup attempts in <application>libpq</> time out as
+      intended (Laurenz Albe)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <application>pg_restore</>'s processing of old-style large object
+      comments (Tom Lane)
+     </para>
+
+     <para>
+      A direct-to-database restore from an archive file generated by a
+      pre-9.0 version of <application>pg_dump</> would usually fail if the
+      archive contained more than a few comments for large objects.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      In <filename>contrib/pgcrypto</> functions, ensure sensitive
+      information is cleared from stack variables before returning
+      (Marko Kreen)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      In <filename>contrib/uuid-ossp</>, cache the state of the OSSP UUID
+      library across calls (Tom Lane)
+     </para>
+
+     <para>
+      This improves the efficiency of UUID generation and reduces the amount
+      of entropy drawn from <filename>/dev/urandom</>, on platforms that
+      have that.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Update time zone data files to <application>tzdata</> release 2014e
+      for DST law changes in Crimea, Egypt, and Morocco.
+     </para>
+    </listitem>
+
+   </itemizedlist>
+
+  </sect2>
+ </sect1>
+
  <sect1 id="release-8-4-21">
   <title>Release 8.4.21</title>
 
@@ -113,9 +432,6 @@
       for DST law changes in Fiji and Turkey, plus historical changes in
       Israel and Ukraine.
      </para>
-
-     <para>
-     </para>
     </listitem>
 
    </itemizedlist>
@@ -3702,9 +4018,6 @@
       Prevent crash triggered by constant-false WHERE conditions during
       GEQO optimization (Tom Lane)
      </para>
-
-     <para>
-     </para>
     </listitem>
 
     <listitem>