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Update release notes for releases 9.0.4, 8.4.8, 8.3.15, and 8.2.21.
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‎doc/src/sgml/release-8.2.sgml

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<!-- doc/src/sgml/release-8.2.sgml -->
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<!-- See header comment in release.sgml about typical markup -->
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<sect1 id="release-8-2-21">
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<title>Release 8.2.21</title>
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<note>
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<title>Release Date</title>
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<simpara>2011-04-18</simpara>
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</note>
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<para>
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This release contains a variety of fixes from 8.2.20.
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For information about new features in the 8.2 major release, see
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<xref linkend="release-8-2">.
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</para>
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<sect2>
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<title>Migration to Version 8.2.21</title>
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<para>
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A dump/restore is not required for those running 8.2.X.
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However, if you are upgrading from a version earlier than 8.2.14,
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see the release notes for 8.2.14.
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</para>
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</sect2>
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<sect2>
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<title>Changes</title>
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<itemizedlist>
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<listitem>
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<para>
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Avoid potential deadlock during catalog cache initialization
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(Nikhil Sontakke)
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</para>
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<para>
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In some cases the cache loading code would acquire share lock on a
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system index before locking the index's catalog. This could deadlock
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against processes trying to acquire exclusive locks in the other,
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more standard order.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix dangling-pointer problem in <literal>BEFORE ROW UPDATE</> trigger
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handling when there was a concurrent update to the target tuple
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(Tom Lane)
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</para>
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<para>
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This bug has been observed to result in intermittent <quote>cannot
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extract system attribute from virtual tuple</> failures while trying to
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do <literal>UPDATE RETURNING ctid</>. There is a very small probability
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of more serious errors, such as generating incorrect index entries for
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the updated tuple.
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</para>
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</listitem>
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<listitem>
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<para>
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Disallow <command>DROP TABLE</> when there are pending deferred trigger
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events for the table (Tom Lane)
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</para>
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<para>
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Formerly the <command>DROP</> would go through, leading to
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<quote>could not open relation with OID nnn</> errors when the
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triggers were eventually fired.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix PL/Python memory leak involving array slices (Daniel Popowich)
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</para>
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</listitem>
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<listitem>
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<para>
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Fix <application>pg_restore</> to cope with long lines (over 1KB) in
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TOC files (Tom Lane)
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</para>
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</listitem>
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<listitem>
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<para>
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Put in more safeguards against crashing due to division-by-zero
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with overly enthusiastic compiler optimization (Aurelien Jarno)
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</para>
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</listitem>
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<listitem>
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<para>
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Support use of dlopen() in FreeBSD and OpenBSD on MIPS (Tom Lane)
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</para>
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<para>
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There was a hard-wired assumption that this system function was not
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available on MIPS hardware on these systems. Use a compile-time test
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instead, since more recent versions have it.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix compilation failures on HP-UX (Heikki Linnakangas)
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</para>
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</listitem>
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<listitem>
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<para>
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Fix path separator used by <application>pg_regress</> on Cygwin
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(Andrew Dunstan)
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</para>
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</listitem>
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<listitem>
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<para>
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Update time zone data files to <application>tzdata</> release 2011f
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for DST law changes in Chile, Cuba, Falkland Islands, Morocco, Samoa,
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and Turkey; also historical corrections for South Australia, Alaska,
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and Hawaii.
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</para>
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</listitem>
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</itemizedlist>
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</sect2>
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</sect1>
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<sect1 id="release-8-2-20">
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<title>Release 8.2.20</title>
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‎doc/src/sgml/release-8.3.sgml

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<!-- doc/src/sgml/release-8.3.sgml -->
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<!-- See header comment in release.sgml about typical markup -->
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<sect1 id="release-8-3-15">
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<title>Release 8.3.15</title>
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<note>
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<title>Release Date</title>
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<simpara>2011-04-18</simpara>
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</note>
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<para>
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This release contains a variety of fixes from 8.3.14.
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For information about new features in the 8.3 major release, see
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<xref linkend="release-8-3">.
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</para>
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<sect2>
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<title>Migration to Version 8.3.15</title>
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<para>
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A dump/restore is not required for those running 8.3.X.
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However, if you are upgrading from a version earlier than 8.3.8,
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see the release notes for 8.3.8.
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</para>
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</sect2>
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<sect2>
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<title>Changes</title>
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<itemizedlist>
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<listitem>
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<para>
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Disallow including a composite type in itself (Tom Lane)
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</para>
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<para>
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This prevents scenarios wherein the server could recurse infinitely
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while processing the composite type. While there are some possible
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uses for such a structure, they don't seem compelling enough to
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justify the effort required to make sure it always works safely.
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</para>
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</listitem>
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<listitem>
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<para>
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Avoid potential deadlock during catalog cache initialization
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(Nikhil Sontakke)
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</para>
52+
53+
<para>
54+
In some cases the cache loading code would acquire share lock on a
55+
system index before locking the index's catalog. This could deadlock
56+
against processes trying to acquire exclusive locks in the other,
57+
more standard order.
58+
</para>
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</listitem>
60+
61+
<listitem>
62+
<para>
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Fix dangling-pointer problem in <literal>BEFORE ROW UPDATE</> trigger
64+
handling when there was a concurrent update to the target tuple
65+
(Tom Lane)
66+
</para>
67+
68+
<para>
69+
This bug has been observed to result in intermittent <quote>cannot
70+
extract system attribute from virtual tuple</> failures while trying to
71+
do <literal>UPDATE RETURNING ctid</>. There is a very small probability
72+
of more serious errors, such as generating incorrect index entries for
73+
the updated tuple.
74+
</para>
75+
</listitem>
76+
77+
<listitem>
78+
<para>
79+
Disallow <command>DROP TABLE</> when there are pending deferred trigger
80+
events for the table (Tom Lane)
81+
</para>
82+
83+
<para>
84+
Formerly the <command>DROP</> would go through, leading to
85+
<quote>could not open relation with OID nnn</> errors when the
86+
triggers were eventually fired.
87+
</para>
88+
</listitem>
89+
90+
<listitem>
91+
<para>
92+
Fix PL/Python memory leak involving array slices (Daniel Popowich)
93+
</para>
94+
</listitem>
95+
96+
<listitem>
97+
<para>
98+
Fix <application>pg_restore</> to cope with long lines (over 1KB) in
99+
TOC files (Tom Lane)
100+
</para>
101+
</listitem>
102+
103+
<listitem>
104+
<para>
105+
Put in more safeguards against crashing due to division-by-zero
106+
with overly enthusiastic compiler optimization (Aurelien Jarno)
107+
</para>
108+
</listitem>
109+
110+
<listitem>
111+
<para>
112+
Support use of dlopen() in FreeBSD and OpenBSD on MIPS (Tom Lane)
113+
</para>
114+
115+
<para>
116+
There was a hard-wired assumption that this system function was not
117+
available on MIPS hardware on these systems. Use a compile-time test
118+
instead, since more recent versions have it.
119+
</para>
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</listitem>
121+
122+
<listitem>
123+
<para>
124+
Fix compilation failures on HP-UX (Heikki Linnakangas)
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</para>
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</listitem>
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<listitem>
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<para>
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Fix version-incompatibility problem with <application>libintl</> on
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Windows (Hiroshi Inoue)
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</para>
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</listitem>
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<listitem>
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<para>
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Fix usage of <application>xcopy</> in Windows build scripts to
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work correctly under Windows 7 (Andrew Dunstan)
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</para>
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<para>
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This affects the build scripts only, not installation or usage.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix path separator used by <application>pg_regress</> on Cygwin
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(Andrew Dunstan)
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</para>
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</listitem>
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153+
<listitem>
154+
<para>
155+
Update time zone data files to <application>tzdata</> release 2011f
156+
for DST law changes in Chile, Cuba, Falkland Islands, Morocco, Samoa,
157+
and Turkey; also historical corrections for South Australia, Alaska,
158+
and Hawaii.
159+
</para>
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</listitem>
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</itemizedlist>
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</sect2>
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</sect1>
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<sect1 id="release-8-3-14">
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<title>Release 8.3.14</title>
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