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Tom Lane ea61b1cf64 Fix failure to verify PGC_[SU_]BACKEND GUCs in pg_file_settings view. 
set_config_option() bails out early if it detects that the option to
be set is PGC_BACKEND or PGC_SU_BACKEND class and we're reading the
config file in a postmaster child; we don't want to apply any new
value in such a case.  That's fine as far as it goes, but it fails
to consider the requirements of the pg_file_settings view: for that,
we need to check validity of the value even though we have no
intention to apply it.  Because we didn't, even very silly values
for affected GUCs would be reported as valid by the view.  There
are only half a dozen such GUCs, which perhaps explains why this
got overlooked for so long.

Fix by continuing when changeVal is false; this parallels the logic
in some other early-exit paths.

Also, the check added by commit 924bcf4f1 to prevent GUC changes in
parallel workers seems a few bricks shy of a load: it's evidently
assuming that ereport(elevel, ...) won't return.  Make sure we
bail out if it does.  The lack of trouble reports suggests that
this is only a latent bug, i.e. parallel workers don't actually
reach here with elevel < ERROR.  (Per the code coverage report,
we never reach here at all in the regression suite.)  But we clearly
don't want to risk proceeding if that does happen.

Per report from Rıdvan Korkmaz.  These are ancient bugs, so back-patch
to all supported branches.

Discussion: https://postgr.es/m/2089235.1703617353@sss.pgh.pa.us
 		2023-12-26 17:57:48 -05:00
config Log LLVM library version in configure output. 2023-10-22 14:33:08 +13:00
contrib pageinspect: Fix failure with hash_bitmap_info() for partitioned indexes 2023-12-19 18:19:21 +09:00
doc Doc: Add missing pgoutput options. 2023-12-26 10:43:40 +05:30
src Fix failure to verify PGC_[SU_]BACKEND GUCs in pg_file_settings view. 2023-12-26 17:57:48 -05:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.git-blame-ignore-revs Backpatch addition of .git-blame-ignore-revs 2022-08-05 19:36:24 +02:00
.gitattributes Add XSL stylesheet to fix up SVG files 2019-06-19 21:26:42 +02:00
.gitignore Add portlock directory to .gitignore 2022-11-26 07:47:22 -05:00
COPYRIGHT Update copyright for 2023 2023-01-02 15:00:36 -05:00
GNUmakefile.in Remove temporary portlock directory during make [dist]clean. 2022-11-26 10:31:03 -05:00
HISTORY Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
Makefile Don't unset MAKEFLAGS in non-GNU Makefile. 2019-06-25 09:36:21 +12:00
README Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
README.git Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
aclocal.m4 Probe $PROVE not $PERL while checking for modules needed by TAP tests. 2021-11-22 12:54:52 -05:00
configure Use BIO_{get,set}_app_data instead of BIO_{get,set}_data. 2023-11-28 12:34:03 -05:00
configure.in Use BIO_{get,set}_app_data instead of BIO_{get,set}_data. 2023-11-28 12:34:03 -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:

	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/.