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Tom Lane 9343bfefa4 Fix memory leak when guc.c decides a setting can't be applied now. 
The prohibitValueChange code paths in set_config_option(), which
are executed whenever we re-read a PGC_POSTMASTER variable from
postgresql.conf, neglected to free anything before exiting.  Thus
we'd leak the proposed new value of a PGC_STRING variable, as noted
by BoChen in bug #16666.  For all variable types, if the check hook
creates an "extra" chunk, we'd also leak that.

These are malloc not palloc chunks, so there is no mechanism for
recovering the leaks before process exit.  Fortunately, the values
are typically not very large, meaning you'd have to go through an
awful lot of SIGHUP configuration-reload cycles to make the leakage
amount to anything.  Still, for a long-lived postmaster process it
could potentially be a problem.

Oversight in commit 2594cf0e8.  Back-patch to all supported branches.

Discussion: https://postgr.es/m/16666-2c41a4eec61b03e1@postgresql.org
2020-10-12 13:31:24 -04:00
config Update config.guess and config.sub 2020-04-30 09:06:49 +02:00
contrib Fix amcheck child check pg_upgrade bug. 2020-09-16 10:42:28 -07:00
doc Further improvements on documentation for pg_dump -t 2020-10-06 15:50:32 +02:00
src Fix memory leak when guc.c decides a setting can't be applied now. 2020-10-12 13:31:24 -04:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.editorconfig Add .editorconfig 2019-12-18 09:13:13 +01:00
.gitattributes gitattributes: Add new file 2019-11-12 08:13:55 +01:00
.gitignore Support for optimizing and emitting code in LLVM JIT provider. 2018-03-22 11:05:22 -07:00
aclocal.m4 Fix configure's AC_CHECK_DECLS tests to work correctly with clang. 2018-11-19 12:01:47 -05:00
configure Stamp 13.0. 2020-09-21 16:47:36 -04:00
configure.in Stamp 13.0. 2020-09-21 16:47:36 -04:00
COPYRIGHT Update copyrights for 2020 2020-01-01 12:21:45 -05:00
GNUmakefile.in Make install-tests target work with vpath builds 2020-05-31 18:33:00 -04:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Don't unset MAKEFLAGS in non-GNU Makefile. 2019-06-25 09:36:21 +12:00
README Canonicalize some URLs 2020-02-10 20:47:50 +01:00
README.git Canonicalize some URLs 2020-02-10 20:47:50 +01:00

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:

	https://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
https://www.postgresql.org/download/.  For more information look at our
web site located at https://www.postgresql.org/.