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>E.100. Release 8.3.21</A
></H1
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><P
><B
>Release date: </B
>2012-09-24</P
></DIV
><P
>   This release contains a variety of fixes from 8.3.20.
   For information about new features in the 8.3 major release, see
   <A
HREF="release-8-3.html"
>Section E.121</A
>.
  </P
><P
>   The <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> community will stop releasing updates
   for the 8.3.X release series in February 2013.
   Users are encouraged to update to a newer release branch soon.
  </P
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>E.100.1. Migration to Version 8.3.21</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
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>E.100.2. Changes</A
></H2
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></P
><UL
><LI
><P
>      Improve page-splitting decisions in GiST indexes (Alexander Korotkov,
      Robert Haas, Tom Lane)
     </P
><P
>      Multi-column GiST indexes might suffer unexpected bloat due to this
      error.
     </P
></LI
><LI
><P
>      Fix cascading privilege revoke to stop if privileges are still held
      (Tom Lane)
     </P
><P
>      If we revoke a grant option from some role <TT
CLASS="REPLACEABLE"
><I
>X</I
></TT
>, but
      <TT
CLASS="REPLACEABLE"
><I
>X</I
></TT
> still holds that option via a grant from someone
      else, we should not recursively revoke the corresponding privilege
      from role(s) <TT
CLASS="REPLACEABLE"
><I
>Y</I
></TT
> that <TT
CLASS="REPLACEABLE"
><I
>X</I
></TT
> had granted it
      to.
     </P
></LI
><LI
><P
>      Fix handling of <TT
CLASS="LITERAL"
>SIGFPE</TT
> when PL/Perl is in use (Andres Freund)
     </P
><P
>      Perl resets the process's <TT
CLASS="LITERAL"
>SIGFPE</TT
> handler to
      <TT
CLASS="LITERAL"
>SIG_IGN</TT
>, which could result in crashes later on.  Restore
      the normal Postgres signal handler after initializing PL/Perl.
     </P
></LI
><LI
><P
>      Prevent PL/Perl from crashing if a recursive PL/Perl function is
      redefined while being executed (Tom Lane)
     </P
></LI
><LI
><P
>      Work around possible misoptimization in PL/Perl (Tom Lane)
     </P
><P
>      Some Linux distributions contain an incorrect version of
      <TT
CLASS="FILENAME"
>pthread.h</TT
> that results in incorrect compiled code in
      PL/Perl, leading to crashes if a PL/Perl function calls another one
      that throws an error.
     </P
></LI
><LI
><P
>      Update time zone data files to <SPAN
CLASS="APPLICATION"
>tzdata</SPAN
> release 2012f
      for DST law changes in Fiji
     </P
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