Release date: 2012-06-04
This release contains a variety of fixes from 8.3.18. For information about new features in the 8.3 major release, see Section E.203.
A dump/restore is not required for those running 8.3.X.
However, if you are upgrading from a version earlier than 8.3.17, see Section E.186.
Fix incorrect password transformation in
crypt() function (Solar Designer)
If a password string contained the byte value
0x80, the remainder of the password was ignored,
causing the password to be much weaker than it appeared. With this
fix, the rest of the string is properly included in the DES hash.
Any stored password values that are affected by this bug will thus
no longer match, so the stored values may need to be updated.
SECURITY DEFINER and
SET attributes for a procedural
language's call handler (Tom Lane)
Applying such attributes to a call handler could crash the server. (CVE-2012-2655)
Allow numeric timezone offsets in
timestamp input to be up to 16 hours away from UTC
Some historical time zones have offsets larger than 15 hours, the previous limit. This could result in dumped data values being rejected during reload.
Fix timestamp conversion to cope when the given time is exactly the last DST transition time for the current timezone (Tom Lane)
This oversight has been there a long time, but was not noticed previously because most DST-using zones are presumed to have an indefinite sequence of future DST transitions.
name casts to perform string truncation
correctly in multibyte encodings (Karl Schnaitter)
Fix memory copying bug in
to_tsquery() (Heikki Linnakangas)
Fix slow session startup when
pg_attribute is very large (Tom Lane)
rebuilding code that is sometimes needed during session start would
trigger the synchronized-scan logic, causing it to take many times
longer than normal. The problem was particularly acute if many new
sessions were starting at once.
Ensure sequential scans check for query cancel reasonably often (Merlin Moncure)
A scan encountering many consecutive pages that contain no live tuples would not respond to interrupts meanwhile.
Ensure the Windows implementation of
ImmediateInterruptOK before returning (Tom
This oversight meant that a query-cancel interrupt received later in the same query could be accepted at an unsafe time, with unpredictable but not good consequences.
Show whole-row variables safely when printing views or rules (Abbas Butt, Tom Lane)
Corner cases involving ambiguous names (that is, the name could be either a table or column name of the query) were printed in an ambiguous way, risking that the view or rule would be interpreted differently after dump and reload. Avoid the ambiguous case by attaching a no-op cast.
Ensure autovacuum worker processes perform stack depth checking properly (Heikki Linnakangas)
Previously, infinite recursion in a function invoked by
ANALYZE could crash worker
Fix logging collector to not lose log coherency under high load (Andrew Dunstan)
The collector previously could fail to reassemble large messages if it got too busy.
Fix logging collector to ensure it will restart file rotation after receiving SIGHUP (Tom Lane)
command when the target is the function's first variable (Tom
Fix several performance problems in pg_dump when the database contains many objects (Jeff Janes, Tom Lane)
pg_dump could get very slow if the database contained many schemas, or if many objects are in dependency loops, or if there are many owned sequences.
dblink_exec() to not leak temporary database
connections upon error (Tom Lane)
Update time zone data files to tzdata release 2012c for DST law changes in Antarctica, Armenia, Chile, Cuba, Falkland Islands, Gaza, Haiti, Hebron, Morocco, Syria, and Tokelau Islands; also historical corrections for Canada.
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