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>Appendix E. Release Notes</TD
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>E.137. Release 8.2.8</A
></H1
><DIV
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><P
><B
>Release date: </B
>never released</P
></DIV
><P
>   This release contains a variety of fixes from 8.2.7.
   For information about new features in the 8.2 major release, see
   <A
HREF="release-8-2.html"
>Section E.145</A
>.
  </P
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>E.137.1. Migration to Version 8.2.8</A
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>    A dump/restore is not required for those running 8.2.X.
    However, if you are upgrading from a version earlier than 8.2.7,
    see <A
HREF="release-8-2-7.html"
>Section E.138</A
>.
   </P
></DIV
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><H2
CLASS="SECT2"
><A
NAME="AEN133657"
>E.137.2. Changes</A
></H2
><P
></P
><UL
><LI
><P
>      Fix <TT
CLASS="LITERAL"
>ERRORDATA_STACK_SIZE exceeded</TT
> crash that
      occurred on Windows when using UTF-8 database encoding and a different
      client encoding (Tom)
     </P
></LI
><LI
><P
>      Fix <TT
CLASS="COMMAND"
>ALTER TABLE ADD COLUMN ... PRIMARY KEY</TT
> so that the new
      column is correctly checked to see if it's been initialized to all
      non-nulls (Brendan Jurd)
     </P
><P
>      Previous versions neglected to check this requirement at all.
     </P
></LI
><LI
><P
>      Fix possible <TT
CLASS="COMMAND"
>CREATE TABLE</TT
> failure when inheriting the
      <SPAN
CLASS="QUOTE"
>"same"</SPAN
> constraint from multiple parent relations that
      inherited that constraint from a common ancestor (Tom)
     </P
></LI
><LI
><P
>      Fix <CODE
CLASS="FUNCTION"
>pg_get_ruledef()</CODE
> to show the alias, if any, attached
      to the target table of an <TT
CLASS="COMMAND"
>UPDATE</TT
> or <TT
CLASS="COMMAND"
>DELETE</TT
>
      (Tom)
     </P
></LI
><LI
><P
>      Fix GIN bug that could result in a <TT
CLASS="LITERAL"
>too many LWLocks
      taken</TT
> failure (Teodor)
     </P
></LI
><LI
><P
>      Avoid possible crash when decompressing corrupted data
      (Zdenek Kotala)
     </P
></LI
><LI
><P
>      Repair two places where SIGTERM exit of a backend could leave corrupted
      state in shared memory (Tom)
     </P
><P
>      Neither case is very important if SIGTERM is used to shut down the
      whole database cluster together, but there was a problem if someone
      tried to SIGTERM individual backends.
     </P
></LI
><LI
><P
>      Fix conversions between ISO-8859-5 and other encodings to handle
      Cyrillic <SPAN
CLASS="QUOTE"
>"Yo"</SPAN
> characters (<TT
CLASS="LITERAL"
>e</TT
> and <TT
CLASS="LITERAL"
>E</TT
> with
      two dots) (Sergey Burladyan)
     </P
></LI
><LI
><P
>      Fix several datatype input functions, notably <CODE
CLASS="FUNCTION"
>array_in()</CODE
>,
      that were allowing unused bytes in their results to contain
      uninitialized, unpredictable values (Tom)
     </P
><P
>      This could lead to failures in which two apparently identical literal
      values were not seen as equal, resulting in the parser complaining
      about unmatched <TT
CLASS="LITERAL"
>ORDER BY</TT
> and <TT
CLASS="LITERAL"
>DISTINCT</TT
>
      expressions.
     </P
></LI
><LI
><P
>      Fix a corner case in regular-expression substring matching
      (<TT
CLASS="LITERAL"
>substring(<TT
CLASS="REPLACEABLE"
><I
>string</I
></TT
> from
      <TT
CLASS="REPLACEABLE"
><I
>pattern</I
></TT
>)</TT
>) (Tom)
     </P
><P
>      The problem occurs when there is a match to the pattern overall but
      the user has specified a parenthesized subexpression and that
      subexpression hasn't got a match.  An example is
      <TT
CLASS="LITERAL"
>substring('foo' from 'foo(bar)?')</TT
>.
      This should return NULL, since <TT
CLASS="LITERAL"
>(bar)</TT
> isn't matched, but
      it was mistakenly returning the whole-pattern match instead (ie,
      <TT
CLASS="LITERAL"
>foo</TT
>).
     </P
></LI
><LI
><P
>      Update time zone data files to <SPAN
CLASS="APPLICATION"
>tzdata</SPAN
> release 2008c (for
      DST law changes in Morocco, Iraq, Choibalsan, Pakistan, Syria, Cuba, and
      Argentina/San_Luis)
     </P
></LI
><LI
><P
>      Fix incorrect result from <SPAN
CLASS="APPLICATION"
>ecpg</SPAN
>'s
      <CODE
CLASS="FUNCTION"
>PGTYPEStimestamp_sub()</CODE
> function (Michael)
     </P
></LI
><LI
><P
>      Fix broken GiST comparison function for <TT
CLASS="FILENAME"
>contrib/tsearch2</TT
>'s
      <TT
CLASS="TYPE"
>tsquery</TT
> type (Teodor)
     </P
></LI
><LI
><P
>      Fix possible crashes in <TT
CLASS="FILENAME"
>contrib/cube</TT
> functions (Tom)
     </P
></LI
><LI
><P
>      Fix core dump in <TT
CLASS="FILENAME"
>contrib/xml2</TT
>'s
      <CODE
CLASS="FUNCTION"
>xpath_table()</CODE
> function when the input query returns a
      NULL value (Tom)
     </P
></LI
><LI
><P
>      Fix <TT
CLASS="FILENAME"
>contrib/xml2</TT
>'s makefile to not override
      <TT
CLASS="LITERAL"
>CFLAGS</TT
> (Tom)
     </P
></LI
><LI
><P
>      Fix <TT
CLASS="LITERAL"
>DatumGetBool</TT
> macro to not fail with <SPAN
CLASS="APPLICATION"
>gcc</SPAN
>
      4.3 (Tom)
     </P
><P
>      This problem affects <SPAN
CLASS="QUOTE"
>"old style"</SPAN
> (V0) C functions that
      return boolean.  The fix is already in 8.3, but the need to
      back-patch it was not realized at the time.
     </P
></LI
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