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Preliminary release notes for releases 8.4.3, 8.3.10, 8.2.16, 8.1.20, 8.0.24,

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7.4.28.
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Tom Lane 2010-03-10 01:59:30 +00:00
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doc/src/sgml/release-7.4.sgml
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<!-- $PostgreSQL: pgsql/doc/src/sgml/release-7.4.sgml,v 1.1.10.4 2009/12/10 00:32:06 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/release-7.4.sgml,v 1.1.10.5 2010/03/10 01:59:30 tgl Exp $ -->
<!-- See header comment in release.sgml about typical markup -->
<sect1 id="release-7-4-28">
<title>Release 7.4.28</title>
<note>
<title>Release date</title>
<simpara>2010-03-15</simpara>
</note>
<para>
This release contains a variety of fixes from 7.4.27.
For information about new features in the 7.4 major release, see
<xref linkend="release-7-4">.
</para>
<para>
The <productname>PostgreSQL</> community will stop releasing updates
for the 7.4.X release series in July 2010.
Users are encouraged to update to a newer release branch soon.
</para>
<sect2>
<title>Migration to Version 7.4.28</title>
<para>
A dump/restore is not required for those running 7.4.X.
However, if you are upgrading from a version earlier than 7.4.26,
see the release notes for 7.4.26.
</para>
</sect2>
<sect2>
<title>Changes</title>
<itemizedlist>
<listitem>
<para>
Add new configuration parameter <varname>ssl_renegotiation_limit</> to
control how often we do session key renegotiation for an SSL connection
(Magnus)
</para>
<para>
This can be set to zero to disable renegotiation completely, which may
be required if a broken SSL library is used. In particular, some
vendors are shipping stopgap patches for CVE-2009-3555 that cause
renegotiation attempts to fail.
</para>
</listitem>
<listitem>
<para>
Make <function>substring()</> for <type>bit</> types treat any negative
length as meaning <quote>all the rest of the string</> (Tom)
</para>
<para>
The previous coding treated only -1 that way, and would produce an
invalid result value for other negative values, possibly leading to
a crash (CVE-2010-0442).
</para>
</listitem>
<listitem>
<para>
Fix some cases of pathologically slow regular expression matching (Tom)
</para>
</listitem>
<listitem>
<para>
When reading <filename>pg_hba.conf</> and related files, do not treat
<literal>@something</> as a file inclusion request if the <literal>@</>
appears inside quote marks; also, never treat <literal>@</> by itself
as a file inclusion request (Tom)
</para>
<para>
This prevents erratic behavior if a role or database name starts with
<literal>@</>. If you need to include a file whose path name
contains spaces, you can still do so, but you must write
<literal>@"/path to/file"</> rather than putting the quotes around
the whole construct.
</para>
</listitem>
<listitem>
<para>
Prevent infinite loop on some platforms if a directory is named as
an inclusion target in <filename>pg_hba.conf</> and related files
(Tom)
</para>
</listitem>
<listitem>
<para>
Ensure PL/Tcl initializes the Tcl interpreter fully (Tom)
</para>
<para>
The only known symptom of this oversight is that the Tcl
<literal>clock</> command misbehaves if using Tcl 8.5 or later.
</para>
</listitem>
<listitem>
<para>
Prevent crash in <filename>contrib/dblink</> when too many key
columns are specified to a <function>dblink_build_sql_*</> function
(Rushabh Lathia, Joe Conway)
</para>
</listitem>
</itemizedlist>
</sect2>
</sect1>
<sect1 id="release-7-4-27">
<title>Release 7.4.27</title>