postgresql-8.3 (8.3.7-0ubuntu8.10) intrepid-proposed; urgency=low
* New upstream bug fix release: (LP: #344688)
- Prevent error recursion crashes when encoding conversion fails.
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 *any* 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. (Closes: #517405)
- Disallow "CREATE CONVERSION" with the wrong encodings for the
specified conversion function. 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.
- Fix xpath() to not modify the path expression unless necessary, and
to make a saner attempt at it when necessary.
The SQL standard suggests that xpath should work on data that is a
document fragment, but libxml doesn't support that, and indeed it's
not clear that this is sensible according to the XPath standard.
xpath attempted to work around this mismatch by modifying both the
data and the path expression, but the modification was buggy and
could cause valid searches to fail. Now, xpath checks whether the
data is in fact a well-formed document, and if so invokes libxml
with no change to the data or path expression. Otherwise, a
different modification method that is somewhat less likely to fail
is used.
Note: The new modification method is still not 100% satisfactory,
and it seems likely that no real solution is possible. This patch
should therefore be viewed as a band-aid to keep from breaking
existing applications unnecessarily. It is likely that PostgreSQL
8.4 will simply reject use of xpath on data that is not a
well-formed document.
- Fix core dump when to_char() is given format codes that are
inappropriate for the type of the data argument.
- Fix extreme inefficiency in text search parser's handling of an
email-like string containing multiple @ characters.
- Fix planner problem with sub-"SELECT" in the output list of a
larger subquery.
- Fix decompilation of CASE WHEN with an implicit coercion.
- Fix possible misassignment of the owner of a TOAST table's rowtype.
If "CLUSTER" or a rewriting variant of "ALTER TABLE" were executed
by someone other than the table owner, the pg_type 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 "owner of
data type appears to be invalid" warnings from pg_dump after having
done so (in 8.3).
- Change "UNLISTEN" to exit quickly if the current session has never
executed any "LISTEN" command.
Most of the time this is not a particularly useful optimization,
but since "DISCARD ALL" invokes "UNLISTEN", the previous coding
caused a substantial performance problem for applications that made
heavy use of "DISCARD ALL".
- Fix PL/pgSQL to not treat INTO after "INSERT" as an INTO-variables
clause anywhere in the string, not only at the start; in
particular, don't fail for "INSERT INTO" within "CREATE RULE".
- Clean up PL/pgSQL error status variables fully at block exit.
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.
- Add MUST (Mauritius Island Summer Time) to the default list of
known timezone abbreviations.
Date: Wed, 25 Mar 2009 09:02:46 +0100
Changed-By: Martin Pitt <martin.p...@ubuntu.com>
Maintainer: Martin Pitt <mp...@debian.org>
https://launchpad.net/ubuntu/intrepid/+source/postgresql-8.3/8.3.7-0ubuntu8.10
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Format: 1.8
Date: Wed, 25 Mar 2009 09:02:46 +0100
Source: postgresql-8.3
Binary: libpq-dev libpq5 libecpg6 libecpg-dev libecpg-compat3 libpgtypes3
postgresql-8.3 postgresql-client-8.3 postgresql-server-dev-8.3
postgresql-doc-8.3 postgresql-contrib-8.3 postgresql-plperl-8.3
postgresql-plpython-8.3 postgresql-pltcl-8.3 postgresql postgresql-client
postgresql-doc postgresql-contrib
Architecture: source
Version: 8.3.7-0ubuntu8.10
Distribution: intrepid-proposed
Urgency: low
Maintainer: Martin Pitt <mp...@debian.org>
Changed-By: Martin Pitt <martin.p...@ubuntu.com>
Description:
libecpg-compat3 - older version of run-time library for ECPG programs
libecpg-dev - development files for ECPG (Embedded PostgreSQL for C)
libecpg6 - run-time library for ECPG programs
libpgtypes3 - shared library libpgtypes for PostgreSQL 8.3
libpq-dev - header files for libpq5 (PostgreSQL library)
libpq5 - PostgreSQL C client library
postgresql - object-relational SQL database (supported version)
postgresql-8.3 - object-relational SQL database, version 8.3 server
postgresql-client - front-end programs for PostgreSQL (supported version)
postgresql-client-8.3 - front-end programs for PostgreSQL 8.3
postgresql-contrib - additional facilities for PostgreSQL (supported version)
postgresql-contrib-8.3 - additional facilities for PostgreSQL
postgresql-doc - documentation for the PostgreSQL database management system
postgresql-doc-8.3 - documentation for the PostgreSQL database management
system
postgresql-plperl-8.3 - PL/Perl procedural language for PostgreSQL 8.3
postgresql-plpython-8.3 - PL/Python procedural language for PostgreSQL 8.3
postgresql-pltcl-8.3 - PL/Tcl procedural language for PostgreSQL 8.3
postgresql-server-dev-8.3 - development files for PostgreSQL 8.3 server-side
programming
Closes: 517405
Launchpad-Bugs-Fixed: 344688
Changes:
postgresql-8.3 (8.3.7-0ubuntu8.10) intrepid-proposed; urgency=low
.
* New upstream bug fix release: (LP: #344688)
- Prevent error recursion crashes when encoding conversion fails.
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 *any* 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. (Closes: #517405)
- Disallow "CREATE CONVERSION" with the wrong encodings for the
specified conversion function. 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.
- Fix xpath() to not modify the path expression unless necessary, and
to make a saner attempt at it when necessary.
The SQL standard suggests that xpath should work on data that is a
document fragment, but libxml doesn't support that, and indeed it's
not clear that this is sensible according to the XPath standard.
xpath attempted to work around this mismatch by modifying both the
data and the path expression, but the modification was buggy and
could cause valid searches to fail. Now, xpath checks whether the
data is in fact a well-formed document, and if so invokes libxml
with no change to the data or path expression. Otherwise, a
different modification method that is somewhat less likely to fail
is used.
Note: The new modification method is still not 100% satisfactory,
and it seems likely that no real solution is possible. This patch
should therefore be viewed as a band-aid to keep from breaking
existing applications unnecessarily. It is likely that PostgreSQL
8.4 will simply reject use of xpath on data that is not a
well-formed document.
- Fix core dump when to_char() is given format codes that are
inappropriate for the type of the data argument.
- Fix extreme inefficiency in text search parser's handling of an
email-like string containing multiple @ characters.
- Fix planner problem with sub-"SELECT" in the output list of a
larger subquery.
- Fix decompilation of CASE WHEN with an implicit coercion.
- Fix possible misassignment of the owner of a TOAST table's rowtype.
If "CLUSTER" or a rewriting variant of "ALTER TABLE" were executed
by someone other than the table owner, the pg_type 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 "owner of
data type appears to be invalid" warnings from pg_dump after having
done so (in 8.3).
- Change "UNLISTEN" to exit quickly if the current session has never
executed any "LISTEN" command.
Most of the time this is not a particularly useful optimization,
but since "DISCARD ALL" invokes "UNLISTEN", the previous coding
caused a substantial performance problem for applications that made
heavy use of "DISCARD ALL".
- Fix PL/pgSQL to not treat INTO after "INSERT" as an INTO-variables
clause anywhere in the string, not only at the start; in
particular, don't fail for "INSERT INTO" within "CREATE RULE".
- Clean up PL/pgSQL error status variables fully at block exit.
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.
- Add MUST (Mauritius Island Summer Time) to the default list of
known timezone abbreviations.
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