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Andres Freund f5eb854ab6 Fix use of wrong variable in _hash_kill_items() 
In 82467f627b I somehow ended up using 'so->currPos.buf' instead of the 'buf'
variable, which is incorrect when the buffer is not already pinned. At the
very least this can lead to assertion failures

Unfortunately this shows that this code path was not covered. Expand
src/test/modules/index/specs/killtuples.spec to test it.  Until now the
'result' step always reported either a 0 or 1 buffer accesses, but when
exercising hash overflows, more buffers are accessed.  To avoid depending on
the precise number of accesses, change the result step to return whether there
were any heap accesses. That makes the change a lot more verbose, but still
seems worth it.

Reported-by: Alexander Kuzmenkov <akuzmenkov@tigerdata.com>
Reported-by: Alexander Lakhin <exclusion@gmail.com>
Reported-by: Heikki Linnakangas <hlinnaka@iki.fi>
Discussion: https://postgr.es/m/vjtmvwvbxt7w5uyacxpzibpj65ewcb7uqaqbhd4arvnjbp5jqz%405ksdh6fsyqve
Discussion: https://postgr.es/m/b9de8d05-3b02-4a27-9b0b-03972fa4bfd3@iki.fi
2026-03-17 14:54:41 -04:00
.github Add CODE_OF_CONDUCT.md, CONTRIBUTING.md, and SECURITY.md. 2024-07-02 13:03:58 -05:00
config Hardcode override of typeof_unqual for clang-for-bitcode 2026-03-16 19:24:49 +01:00
contrib pg_plan_advice: Avoid a crash under GEQO. 2026-03-17 14:25:43 -04:00
doc Add more columns to pg_stats, pg_stats_ext, and pg_stats_ext_exprs. 2026-03-17 09:26:27 -05:00
src Fix use of wrong variable in _hash_kill_items() 2026-03-17 14:54:41 -04:00
.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 b6eb8dde6b to .git-blame-ignore-revs. 2026-03-13 11:45:34 -05:00
.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 Hardcode override of typeof_unqual for clang-for-bitcode 2026-03-16 19:24:49 +01:00
configure.ac Move -ffast-math defense to float.c and remove the configure check. 2026-03-15 19:34:52 -04:00
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 Hardcode override of typeof_unqual for clang-for-bitcode 2026-03-16 19:24:49 +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/.