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>Appendix E. Release Notes</TD
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>E.98. Release 8.3.23</A
></H1
><DIV
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><P
><B
>Release date: </B
>2013-02-07</P
></DIV
><P
> This release contains a variety of fixes from 8.3.22.
For information about new features in the 8.3 major release, see
<A
HREF="release-8-3.html"
>Section E.121</A
>.
</P
><P
> This is expected to be the last <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> release
in the 8.3.X series. Users are encouraged to update to a newer
release branch soon.
</P
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><A
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>E.98.1. Migration to Version 8.3.23</A
></H2
><P
> A dump/restore is not required for those running 8.3.X.
</P
><P
> However, if you are upgrading from a version earlier than 8.3.17,
see <A
HREF="release-8-3-17.html"
>Section E.104</A
>.
</P
></DIV
><DIV
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><H2
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><A
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>E.98.2. Changes</A
></H2
><P
></P
><UL
><LI
><P
> Prevent execution of <CODE
CLASS="FUNCTION"
>enum_recv</CODE
> from SQL (Tom Lane)
</P
><P
> The function was misdeclared, allowing a simple SQL command to crash the
server. In principle an attacker might be able to use it to examine the
contents of server memory. Our thanks to Sumit Soni (via Secunia SVCRP)
for reporting this issue. (CVE-2013-0255)
</P
></LI
><LI
><P
> Fix SQL grammar to allow subscripting or field selection from a
sub-SELECT result (Tom Lane)
</P
></LI
><LI
><P
> Protect against race conditions when scanning
<TT
CLASS="STRUCTNAME"
>pg_tablespace</TT
> (Stephen Frost, Tom Lane)
</P
><P
> <TT
CLASS="COMMAND"
>CREATE DATABASE</TT
> and <TT
CLASS="COMMAND"
>DROP DATABASE</TT
> could
misbehave if there were concurrent updates of
<TT
CLASS="STRUCTNAME"
>pg_tablespace</TT
> entries.
</P
></LI
><LI
><P
> Prevent <TT
CLASS="COMMAND"
>DROP OWNED</TT
> from trying to drop whole databases or
tablespaces (Álvaro Herrera)
</P
><P
> For safety, ownership of these objects must be reassigned, not dropped.
</P
></LI
><LI
><P
> Prevent misbehavior when a <TT
CLASS="SYMBOL"
>RowExpr</TT
> or <TT
CLASS="SYMBOL"
>XmlExpr</TT
>
is parse-analyzed twice (Andres Freund, Tom Lane)
</P
><P
> This mistake could be user-visible in contexts such as
<TT
CLASS="LITERAL"
>CREATE TABLE LIKE INCLUDING INDEXES</TT
>.
</P
></LI
><LI
><P
> Improve defenses against integer overflow in hashtable sizing
calculations (Jeff Davis)
</P
></LI
><LI
><P
> Ensure that non-ASCII prompt strings are translated to the correct
code page on Windows (Alexander Law, Noah Misch)
</P
><P
> This bug affected <SPAN
CLASS="APPLICATION"
>psql</SPAN
> and some other client programs.
</P
></LI
><LI
><P
> Fix possible crash in <SPAN
CLASS="APPLICATION"
>psql</SPAN
>'s <TT
CLASS="COMMAND"
>\?</TT
> command
when not connected to a database (Meng Qingzhong)
</P
></LI
><LI
><P
> Fix one-byte buffer overrun in <SPAN
CLASS="APPLICATION"
>libpq</SPAN
>'s
<CODE
CLASS="FUNCTION"
>PQprintTuples</CODE
> (Xi Wang)
</P
><P
> This ancient function is not used anywhere by
<SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> itself, but it might still be used by some
client code.
</P
></LI
><LI
><P
> Rearrange configure's tests for supplied functions so it is not
fooled by bogus exports from libedit/libreadline (Christoph Berg)
</P
></LI
><LI
><P
> Ensure Windows build number increases over time (Magnus Hagander)
</P
></LI
><LI
><P
> Make <SPAN
CLASS="APPLICATION"
>pgxs</SPAN
> build executables with the right
<TT
CLASS="LITERAL"
>.exe</TT
> suffix when cross-compiling for Windows
(Zoltan Boszormenyi)
</P
></LI
><LI
><P
> Add new timezone abbreviation <TT
CLASS="LITERAL"
>FET</TT
> (Tom Lane)
</P
><P
> This is now used in some eastern-European time zones.
</P
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