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Noah Misch f0a264a362 Fix failure to copy setlocale() return value. 
POSIX permits setlocale() calls to invalidate any previous setlocale()
return values, but commit 5f538ad004
neglected to account for setlocale(LC_CTYPE, NULL) doing so.  The effect
was to set the LC_CTYPE environment variable to an unintended value.
pg_perm_setlocale() sets this variable to assist PL/Perl; without it,
Perl would undo PostgreSQL's locale settings.  The known-affected
configurations are 32-bit, release builds using Visual Studio 2012 or
Visual Studio 2013.  Visual Studio 2010 is unaffected, as were all
buildfarm-attested configurations.  In principle, this bug could leave
the wrong LC_CTYPE in effect after PL/Perl use, which could in turn
facilitate problems like corrupt tsvector datums.  No known platform
experiences that consequence, because PL/Perl on Windows does not use
this environment variable.

The bug has been user-visible, as early postmaster failure, on systems
with Windows ANSI code page set to CP936 for "Chinese (Simplified, PRC)"
and probably on systems using other multibyte code pages.
(SetEnvironmentVariable() rejects values containing character data not
valid under the Windows ANSI code page.)  Back-patch to 9.4, where the
faulty commit first appeared.

Reported by Didi Hu and 林鹏程.  Reviewed by Tom Lane, though this fix
strategy was not his first choice.
2015-06-20 12:09:29 -04:00
config Remove configure check prohibiting threaded libpython on OpenBSD. 2015-05-26 22:14:59 -04:00
contrib Make Python tests more portable 2015-05-31 07:10:45 -04:00
doc Fix BRIN supported operators table 2015-06-20 12:26:36 -03:00
src Fix failure to copy setlocale() return value. 2015-06-20 12:09:29 -04:00
.dir-locals.el emacs: Set indent-tabs-mode in perl-mode 2015-04-12 23:53:23 -04:00
.gitattributes Add functions for dealing with PGP armor header lines to pgcrypto. 2014-10-01 16:03:39 +03:00
.gitignore Improve speed of make check-world 2015-04-23 08:59:52 -04:00
aclocal.m4 Remove cvs keywords from all files. 2010-09-20 22:08:53 +02:00
configure Remove configure check prohibiting threaded libpython on OpenBSD. 2015-05-26 22:14:59 -04:00
configure.in Windows also needs an override of the shared libpython detection 2015-05-02 13:23:16 -04:00
COPYRIGHT Update copyright for 2015 2015-01-06 11:43:47 -05:00
GNUmakefile.in Fix distclean/maintainer-clean targets to remove top-level tmp_install dir. 2015-05-13 18:48:05 -04:00
HISTORY Improve text of stub HISTORY file. 2014-02-12 18:16:17 -05:00
Makefile Allow make check in PL directories 2011-02-15 06:52:12 +02:00
README Don't generate plain-text HISTORY and src/test/regress/README anymore. 2014-02-10 20:48:04 -05:00
README.git Don't generate plain-text HISTORY and src/test/regress/README anymore. 2014-02-10 20:48:04 -05:00

README 

PostgreSQL Database Management System
=====================================

This directory contains the source code distribution of the PostgreSQL
database management system.

PostgreSQL is an advanced object-relational database management system
that supports an extended subset of the SQL standard, including
transactions, foreign keys, subqueries, triggers, user-defined types
and functions.  This distribution also contains C language bindings.

PostgreSQL has many language interfaces, many of which are listed here:

	http://www.postgresql.org/download

See the file INSTALL for instructions on how to build and install
PostgreSQL.  That file also lists supported operating systems and
hardware platforms and contains information regarding any other
software packages that are required to build or run the PostgreSQL
system.  Copyright and license information can be found in the
file COPYRIGHT.  A comprehensive documentation set is included in this
distribution; it can be read as described in the installation
instructions.

The latest version of this software may be obtained at
http://www.postgresql.org/download/.  For more information look at our
web site located at http://www.postgresql.org/.