postgres

Etsuro Fujita fd5b36ab18 postgres_fdw: Fix handling of abort-cleanup-failed connections. As connections that failed abort cleanup can't safely be further used, if a remote query tries to get such a connection, we reject it. Previously, this rejection involved dropping the connection if it was open, without accounting for the possibility of open cursors using it, causing a server crash when such an open cursor tried to use an already-dropped connection, as a cursor-handling function (create_cursor, fetch_more_data, or close_cursor) was called on a freed PGconn. To fix, delay dropping failed connections until abort cleanup of the main transaction, to ensure open cursors using such a connection can safely refer to the PGconn for it. Oversight in commit `8bf58c0d9`. Reported-by: Zhibai Song <songzhibai1234@gmail.com> Diagnosed-by: Zhibai Song <songzhibai1234@gmail.com> Author: Etsuro Fujita <etsuro.fujita@gmail.com> Reviewed-by: Michael Paquier <michael@paquier.xyz> Reviewed-by: Chao Li <li.evan.chao@gmail.com> Reviewed-by: Matheus Alcantara <matheusssilv97@gmail.com> Discussion: https://postgr.es/m/CAPmGK176y6JP017-Cn%2BhS9CEJx_6iVhRoYbAqzuLU4d8-XPPNg%40mail.gmail.com Backpatch-through: 14		2 days ago
config	Allow PG_PRINTF_ATTRIBUTE to be different in C and C++ code.	2 months ago
contrib	postgres_fdw: Fix handling of abort-cleanup-failed connections.	2 days ago
doc	doc: Mention validation attempt during ALTER INDEX .. ATTACH PARTITION	7 days ago
src	Consider collation when proving subquery uniqueness	3 days ago
.abi-compliance-history	Update .abi-compliance-history for PrepareToInvalidateCacheTuple().	5 months ago
.dir-locals.el	…
.editorconfig	…
.git-blame-ignore-revs	Add previous commit to .git-blame-ignore-revs.	7 months ago
.gitattributes	Exclude LLVM files from whitespace checks	1 year ago
.gitignore	Add portlock directory to .gitignore	3 years ago
COPYRIGHT	Update copyright for 2026	4 months ago
GNUmakefile.in	Remove temporary portlock directory during make [dist]clean.	3 years ago
HISTORY	Canonicalize some URLs	6 years ago
Makefile	…
README	Canonicalize some URLs	6 years ago
README.git	Canonicalize some URLs	6 years ago
aclocal.m4	Probe $PROVE not $PERL while checking for modules needed by TAP tests.	5 years ago
configure	Allow PG_PRINTF_ATTRIBUTE to be different in C and C++ code.	2 months ago
configure.ac	Allow PG_PRINTF_ATTRIBUTE to be different in C and C++ code.	2 months ago

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/.