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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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>E.97. Release 8.1.17</A
></H1
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Release Date: </B
>2009-03-16</P
></BLOCKQUOTE
></DIV
><P
> This release contains a variety of fixes from 8.1.16.
For information about new features in the 8.1 major release, see
<A
HREF="release-8-1.html"
>Section E.114</A
>.
</P
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN122971"
>E.97.1. Migration to Version 8.1.17</A
></H2
><P
> A dump/restore is not required for those running 8.1.X.
However, if you are upgrading from a version earlier than 8.1.15,
see the release notes for 8.1.15.
</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN122974"
>E.97.2. Changes</A
></H2
><P
></P
><UL
><LI
><P
> Prevent error recursion crashes when encoding conversion fails (Tom)
</P
><P
> This change extends fixes made in the last two minor releases for
related failure scenarios. The previous fixes were narrowly tailored
for the original problem reports, but we have now recognized that
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>any</I
></SPAN
> error thrown by an encoding conversion function could
potentially lead to infinite recursion while trying to report the
error. The solution therefore is to disable translation and encoding
conversion and report the plain-ASCII form of any error message,
if we find we have gotten into a recursive error reporting situation.
(CVE-2009-0922)
</P
></LI
><LI
><P
> Disallow <TT
CLASS="COMMAND"
>CREATE CONVERSION</TT
> with the wrong encodings
for the specified conversion function (Heikki)
</P
><P
> This prevents one possible scenario for encoding conversion failure.
The previous change is a backstop to guard against other kinds of
failures in the same area.
</P
></LI
><LI
><P
> Fix core dump when <CODE
CLASS="FUNCTION"
>to_char()</CODE
> is given format codes that
are inappropriate for the type of the data argument (Tom)
</P
></LI
><LI
><P
> Fix decompilation of <TT
CLASS="LITERAL"
>CASE WHEN</TT
> with an implicit coercion
(Tom)
</P
><P
> This mistake could lead to Assert failures in an Assert-enabled build,
or an <SPAN
CLASS="QUOTE"
>"unexpected CASE WHEN clause"</SPAN
> error message in other
cases, when trying to examine or dump a view.
</P
></LI
><LI
><P
> Fix possible misassignment of the owner of a TOAST table's rowtype (Tom)
</P
><P
> If <TT
CLASS="COMMAND"
>CLUSTER</TT
> or a rewriting variant of <TT
CLASS="COMMAND"
>ALTER TABLE</TT
>
were executed by someone other than the table owner, the
<TT
CLASS="STRUCTNAME"
>pg_type</TT
> entry for the table's TOAST table would end up
marked as owned by that someone. This caused no immediate problems,
since the permissions on the TOAST rowtype aren't examined by any
ordinary database operation. However, it could lead to unexpected
failures if one later tried to drop the role that issued the command
(in 8.1 or 8.2), or <SPAN
CLASS="QUOTE"
>"owner of data type appears to be invalid"</SPAN
>
warnings from <SPAN
CLASS="APPLICATION"
>pg_dump</SPAN
> after having done so (in 8.3).
</P
></LI
><LI
><P
> Clean up PL/pgSQL error status variables fully at block exit
(Ashesh Vashi and Dave Page)
</P
><P
> This is not a problem for PL/pgSQL itself, but the omission could cause
the PL/pgSQL Debugger to crash while examining the state of a function.
</P
></LI
><LI
><P
> Add <TT
CLASS="LITERAL"
>MUST</TT
> (Mauritius Island Summer Time) to the default list
of known timezone abbreviations (Xavier Bugaud)
</P
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