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><A
NAME="RELEASE-8-3-9"
>E.112. Release 8.3.9</A
></H1
><DIV
CLASS="FORMALPARA"
><P
><B
>Release date: </B
>2009-12-14</P
></DIV
><P
> This release contains a variety of fixes from 8.3.8.
For information about new features in the 8.3 major release, see
<A
HREF="release-8-3.html"
>Section E.121</A
>.
</P
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN130339"
>E.112.1. Migration to Version 8.3.9</A
></H2
><P
> A dump/restore is not required for those running 8.3.X.
However, if you are upgrading from a version earlier than 8.3.8,
see <A
HREF="release-8-3-8.html"
>Section E.113</A
>.
</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN130343"
>E.112.2. Changes</A
></H2
><P
></P
><UL
><LI
><P
> Protect against indirect security threats caused by index functions
changing session-local state (Gurjeet Singh, Tom)
</P
><P
> This change prevents allegedly-immutable index functions from possibly
subverting a superuser's session (CVE-2009-4136).
</P
></LI
><LI
><P
> Reject SSL certificates containing an embedded null byte in the common
name (CN) field (Magnus)
</P
><P
> This prevents unintended matching of a certificate to a server or client
name during SSL validation (CVE-2009-4034).
</P
></LI
><LI
><P
> Fix possible crash during backend-startup-time cache initialization (Tom)
</P
></LI
><LI
><P
> Avoid crash on empty thesaurus dictionary (Tom)
</P
></LI
><LI
><P
> Prevent signals from interrupting <TT
CLASS="LITERAL"
>VACUUM</TT
> at unsafe times
(Alvaro)
</P
><P
> This fix prevents a PANIC if a <TT
CLASS="LITERAL"
>VACUUM FULL</TT
> is canceled
after it's already committed its tuple movements, as well as transient
errors if a plain <TT
CLASS="LITERAL"
>VACUUM</TT
> is interrupted after having
truncated the table.
</P
></LI
><LI
><P
> Fix possible crash due to integer overflow in hash table size
calculation (Tom)
</P
><P
> This could occur with extremely large planner estimates for the size of
a hashjoin's result.
</P
></LI
><LI
><P
> Fix very rare crash in <TT
CLASS="TYPE"
>inet</TT
>/<TT
CLASS="TYPE"
>cidr</TT
> comparisons (Chris
Mikkelson)
</P
></LI
><LI
><P
> Ensure that shared tuple-level locks held by prepared transactions are
not ignored (Heikki)
</P
></LI
><LI
><P
> Fix premature drop of temporary files used for a cursor that is accessed
within a subtransaction (Heikki)
</P
></LI
><LI
><P
> Fix memory leak in syslogger process when rotating to a new CSV logfile
(Tom)
</P
></LI
><LI
><P
> Fix Windows permission-downgrade logic (Jesse Morris)
</P
><P
> This fixes some cases where the database failed to start on Windows,
often with misleading error messages such as <SPAN
CLASS="QUOTE"
>"could not locate
matching postgres executable"</SPAN
>.
</P
></LI
><LI
><P
> Fix incorrect logic for GiST index page splits, when the split depends
on a non-first column of the index (Paul Ramsey)
</P
></LI
><LI
><P
> Don't error out if recycling or removing an old WAL file fails at the
end of checkpoint (Heikki)
</P
><P
> It's better to treat the problem as non-fatal and allow the checkpoint
to complete. Future checkpoints will retry the removal. Such problems
are not expected in normal operation, but have been seen to be
caused by misdesigned Windows anti-virus and backup software.
</P
></LI
><LI
><P
> Ensure WAL files aren't repeatedly archived on Windows (Heikki)
</P
><P
> This is another symptom that could happen if some other process
interfered with deletion of a no-longer-needed file.
</P
></LI
><LI
><P
> Fix PAM password processing to be more robust (Tom)
</P
><P
> The previous code is known to fail with the combination of the Linux
<TT
CLASS="LITERAL"
>pam_krb5</TT
> PAM module with Microsoft Active Directory as the
domain controller. It might have problems elsewhere too, since it was
making unjustified assumptions about what arguments the PAM stack would
pass to it.
</P
></LI
><LI
><P
> Raise the maximum authentication token (Kerberos ticket) size in GSSAPI
and SSPI authentication methods (Ian Turner)
</P
><P
> While the old 2000-byte limit was more than enough for Unix Kerberos
implementations, tickets issued by Windows Domain Controllers can be
much larger.
</P
></LI
><LI
><P
> Re-enable collection of access statistics for sequences (Akira Kurosawa)
</P
><P
> This used to work but was broken in 8.3.
</P
></LI
><LI
><P
> Fix processing of ownership dependencies during <TT
CLASS="LITERAL"
>CREATE OR
REPLACE FUNCTION</TT
> (Tom)
</P
></LI
><LI
><P
> Fix incorrect handling of <TT
CLASS="LITERAL"
>WHERE</TT
>
<TT
CLASS="REPLACEABLE"
><I
>x</I
></TT
>=<TT
CLASS="REPLACEABLE"
><I
>x</I
></TT
> conditions (Tom)
</P
><P
> In some cases these could get ignored as redundant, but they aren't
— they're equivalent to <TT
CLASS="REPLACEABLE"
><I
>x</I
></TT
> <TT
CLASS="LITERAL"
>IS NOT NULL</TT
>.
</P
></LI
><LI
><P
> Make text search parser accept underscores in XML attributes (Peter)
</P
></LI
><LI
><P
> Fix encoding handling in <TT
CLASS="TYPE"
>xml</TT
> binary input (Heikki)
</P
><P
> If the XML header doesn't specify an encoding, we now assume UTF-8 by
default; the previous handling was inconsistent.
</P
></LI
><LI
><P
> Fix bug with calling <TT
CLASS="LITERAL"
>plperl</TT
> from <TT
CLASS="LITERAL"
>plperlu</TT
> or vice
versa (Tom)
</P
><P
> An error exit from the inner function could result in crashes due to
failure to re-select the correct Perl interpreter for the outer function.
</P
></LI
><LI
><P
> Fix session-lifespan memory leak when a PL/Perl function is redefined
(Tom)
</P
></LI
><LI
><P
> Ensure that Perl arrays are properly converted to
<SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> arrays when returned by a set-returning
PL/Perl function (Andrew Dunstan, Abhijit Menon-Sen)
</P
><P
> This worked correctly already for non-set-returning functions.
</P
></LI
><LI
><P
> Fix rare crash in exception processing in PL/Python (Peter)
</P
></LI
><LI
><P
> In <TT
CLASS="FILENAME"
>contrib/pg_standby</TT
>, disable triggering failover with a
signal on Windows (Fujii Masao)
</P
><P
> This never did anything useful, because Windows doesn't have Unix-style
signals, but recent changes made it actually crash.
</P
></LI
><LI
><P
> Ensure <SPAN
CLASS="APPLICATION"
>psql</SPAN
>'s flex module is compiled with the correct
system header definitions (Tom)
</P
><P
> This fixes build failures on platforms where
<TT
CLASS="LITERAL"
>--enable-largefile</TT
> causes incompatible changes in the
generated code.
</P
></LI
><LI
><P
> Make the postmaster ignore any <TT
CLASS="LITERAL"
>application_name</TT
> parameter in
connection request packets, to improve compatibility with future libpq
versions (Tom)
</P
></LI
><LI
><P
> Update the timezone abbreviation files to match current reality (Joachim
Wieland)
</P
><P
> This includes adding <TT
CLASS="LITERAL"
>IDT</TT
> and <TT
CLASS="LITERAL"
>SGT</TT
> to the default
timezone abbreviation set.
</P
></LI
><LI
><P
> Update time zone data files to <SPAN
CLASS="APPLICATION"
>tzdata</SPAN
> release 2009s
for DST law changes in Antarctica, Argentina, Bangladesh, Fiji,
Novokuznetsk, Pakistan, Palestine, Samoa, Syria; also historical
corrections for Hong Kong.
</P
></LI
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