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Tom Lane 7664319ccb Be more wary of false matches in initdb's replace_token(). 
Do not replace the target string unless the occurrence is surrounded
by whitespace or line start/end.  This avoids potential false match
to a substring of a field.  While we've not had trouble with that
up to now, the next patch creates hazards of false matches to
POSTGRES within an ACL field.

There is one call site that needs adjustment, as it was presuming
it could write "::1" and have that match "::1/128".  For all the
others, this restriction is okay and strictly safer.

Author: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Álvaro Herrera <alvherre@kurilemu.de>
Discussion: https://postgr.es/m/183292bb-4891-4c96-a3ca-e78b5e0e1358@dunslane.net
2026-03-05 17:22:31 -05:00
.github Add CODE_OF_CONDUCT.md, CONTRIBUTING.md, and SECURITY.md. 2024-07-02 13:03:58 -05:00
config Support using copyObject in standard C++ 2026-03-02 11:48:13 +01:00
contrib Fix local-variable shadowing in pg_trgm's printSourceNFA(). 2026-03-02 14:40:29 -05:00
doc libpq: Add PQgetThreadLock() to mirror PQregisterThreadLock() 2026-03-05 10:04:48 -08:00
src Be more wary of false matches in initdb's replace_token(). 2026-03-05 17:22:31 -05:00
.cirrus.star ci: Simplify ci-os-only handling 2025-08-14 12:09:34 -04:00
.cirrus.tasks.yml Revert "Change default value of default_toast_compression to "lz4"" 2026-03-05 08:25:35 +09:00
.cirrus.yml ci: Per-repo configuration for manually trigger tasks 2025-08-14 11:54:03 -04:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.editorconfig Update .editorconfig and .gitattributes for postgresql.conf.sample. 2025-11-18 10:28:36 -06:00
.git-blame-ignore-revs Add commit 7b24959434 to .git-blame-ignore-revs. 2026-03-02 13:23:28 -06:00
.gitattributes Update .editorconfig and .gitattributes for postgresql.conf.sample. 2025-11-18 10:28:36 -06:00
.gitignore Update top-level .gitignore. 2022-12-04 15:23:00 -05:00
.mailmap Add a Git .mailmap file 2024-11-05 13:56:02 +01:00
aclocal.m4 autoconf: Move export_dynamic determination to configure 2022-12-06 18:55:28 -08:00
configure Revert "Change default value of default_toast_compression to "lz4"" 2026-03-05 08:25:35 +09:00
configure.ac Revert "Change default value of default_toast_compression to "lz4"" 2026-03-05 08:25:35 +09:00
COPYRIGHT Update copyright for 2026 2026-01-01 13:24:10 -05:00
GNUmakefile.in Allow selecting the git revision to be packaged by "make dist". 2024-05-03 11:08:50 -04:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Restore AIX support. 2026-02-23 13:34:22 -05:00
meson.build Support using copyObject in standard C++ 2026-03-02 11:48:13 +01:00
meson_options.txt Update copyright for 2026 2026-01-01 13:24:10 -05:00
README.md Revise the style of a paragraph in README.md. 2024-03-21 10:16:41 -05:00

README.md

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.

Copyright and license information can be found in the file COPYRIGHT.

General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.

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