Release date: 2016-05-12
This release contains a variety of fixes from 9.5.2. For information about new features in the 9.5 major release, see Section E.35.
A dump/restore is not required for those running 9.5.X.
However, if you are upgrading from a version earlier than 9.5.2, see Section E.33.
Clear the OpenSSL error queue before OpenSSL calls, rather than assuming it's clear already; and make sure we leave it clear afterwards (Peter Geoghegan, Dave Vitek, Peter Eisentraut)
This change prevents problems when there are multiple connections using OpenSSL within a single process and not all the code involved follows the same rules for when to clear the error queue. Failures have been reported specifically when a client application uses SSL connections in libpq concurrently with SSL connections using the PHP, Python, or Ruby wrappers for OpenSSL. It's possible for similar problems to arise within the server as well, if an extension module establishes an outgoing SSL connection.
Fix “failed to build any
joins” planner error with a full join enclosed in the
right-hand side of a left join (Tom Lane)
Fix incorrect handling of equivalence-class tests in multilevel nestloop plans (Tom Lane)
Given a three-or-more-way equivalence class of variables, such
X.X = Y.Y = Z.Z, it was possible
for the planner to omit some of the tests needed to enforce that
all the variables are actually equal, leading to join rows being
output that didn't satisfy the
clauses. For various reasons, erroneous plans were seldom selected
in practice, so that this bug has gone undetected for a long
Fix corner-case parser failures occurring when operator_precedence_warning is turned on (Tom Lane)
An example is that
(ARRAY)::text gave an error, though it worked without
Fix query-lifespan memory leak in GIN index scans (Julien Rouhaud)
Fix query-lifespan memory leak and potential index corruption hazard in GIN index insertion (Tom Lane)
The memory leak would typically not amount to much in simple
queries, but it could be very substantial during a large GIN index
build with high
Fix possible misbehavior of
Y,YYY format codes in
to_timestamp() (Tom Lane)
These could advance off the end of the input string, causing subsequent format codes to read garbage.
Fix dumping of rules and views in which the
array argument of a
construct is a
sub-SELECT (Tom Lane)
operator ANY (
Disallow newlines in
parameter values (Tom Lane)
The configuration-file parser doesn't support embedded newlines
in string literals, so we mustn't allow them in values to be
ALTER TABLE ... REPLICA IDENTITY USING
INDEX to work properly if an index on OID is selected (David
Avoid possible misbehavior after failing to remove a tablespace symlink (Tom Lane)
Fix crash in logical decoding on alignment-picky platforms (Tom Lane, Andres Freund)
The failure occurred only with a transaction large enough to spill to disk and a primary-key change within that transaction.
Avoid repeated requests for feedback from receiver while shutting down walsender (Nick Cleaton)
Make pg_regress use a startup
timeout from the
environment variable, if that's set (Tom Lane)
This is for consistency with a behavior recently added to pg_ctl; it eases automated testing on slow machines.
Fix pg_upgrade to correctly restore extension membership for operator families containing only one operator class (Tom Lane)
In such a case, the operator family was restored into the new database, but it was no longer marked as part of the extension. This had no immediate ill effects, but would cause later pg_dump runs to emit output that would cause (harmless) errors on restore.
Fix pg_upgrade to not fail when new-cluster TOAST rules differ from old (Tom Lane)
pg_upgrade had special-case code to handle the situation where the new PostgreSQL version thinks that a table should have a TOAST table while the old version did not. That code was broken, so remove it, and instead do nothing in such cases; there seems no reason to believe that we can't get along fine without a TOAST table if that was okay according to the old version's rules.
Fix atomic operations for PPC when using IBM's XLC compiler (Noah Misch)
Reduce the number of SysV semaphores used by a build configured
--disable-spinlocks (Tom Lane)
Rename internal function
strtoint() to avoid conflict with
a NetBSD library function (Thomas Munro)
Fix reporting of errors from
system calls on Windows (Tom Lane)
Reduce verbosity of compiler output when building with Microsoft Visual Studio (Christian Ullrich)
Support building with Visual Studio 2015 (Michael Paquier, Petr Jelínek)
Note that builds made with VS2015 will not run on Windows versions before Windows Vista.
putenv() to work properly with
Visual Studio 2013 (Michael Paquier)
Avoid possibly-unsafe use of Windows'
FormatMessage() function (Christian Ullrich)
FORMAT_MESSAGE_IGNORE_INSERTS flag where
appropriate. No live bug is known to exist here, but it seems like
a good idea to be careful.
Update time zone data files to tzdata release 2016d for DST law changes in
Russia and Venezuela. There are new zone names
Asia/Tomsk to reflect the fact that these regions
now have different time zone histories from adjacent regions.
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