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Michael Paquier d0518e965e Fix failures with cross-version pg_upgrade tests 
Buildfarm members skimmer and crake have reported that pg_upgrade
running from v18 fails due to the changes of d52c24b0f8, with the
expectations that the objects removed in the test module
injection_points should still be present post upgrades, but the test
module does not have them anymore.

The origin of the issue is that the following test modules depend on
injection_points, but they do not drop the extension once the tests
finish, leaving its traces in the dumps used for the upgrades:
- gin, down to v17
- typcache, down to v18
- nbtree, HEAD-only
Test modules have no upgrade requirements, as they are used only for..
Tests, so there is no point in keeping them around.

An alternative solution would be to drop the databases created by these
modules in AdjustUpgrade.pm, but the solution of this commit to drop the
extension is simpler.  Note that there would be a catch if using a
solution based on AdjustUpgrade.pm as the database name used for the
test runs differs between configure and meson:
- configure relies on USE_MODULE_DB for the database name unicity, that
would build a database name based on the *first* entry of REGRESS, that
lists all the SQL tests.
- meson relies on a "name" field.

For example, for the test module "gin", the regression database is named
"regression_gin" under meson, while it is more complex for configure, as
of "contrib_regression_gin_incomplete_splits".  So a AdjustUpgrade.pm
would need a set of DROP DATABASE IF EXISTS to solve this issue, to cope
with each build system.

The failure has been caused by d52c24b0f8, and the problem can happen
with upgrade dumps from v17 and v18 to HEAD.  This problem is not
currently reachable in the back-branches, but it could be possible that
a future change in injection_points in stable branches invalidates this
theory, so this commit is applied down to v17 in the test modules that
matter.

Per discussion with Tom Lane and Heikki Linnakangas.

Discussion: https://postgr.es/m/2899652.1765167313@sss.pgh.pa.us
Backpatch-through: 17
2025-12-10 12:47:23 +09:00
config Don't put library-supplied -L/-I switches before user-supplied ones. 2025-07-29 15:17:41 -04:00
contrib amcheck: Fix snapshot usage in bt_index_parent_check 2025-12-04 18:12:08 +01:00
doc doc: Fix statement about ON CONFLICT and deferrable constraints. 2025-12-09 10:49:17 +00:00
src Fix failures with cross-version pg_upgrade tests 2025-12-10 12:47:23 +09:00
.abi-compliance-history Update .abi-compliance-history for change to CreateStatistics(). 2025-11-17 14:14:41 -06:00
.cirrus.star ci: Simplify ci-os-only handling 2025-08-14 12:02:42 -04:00
.cirrus.tasks.yml ci: Add missing "set -e" to scripts run by su. 2025-11-06 14:18:16 +13:00
.cirrus.yml ci: Per-repo configuration for manually trigger tasks 2025-08-14 11:33:47 -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
.git-blame-ignore-revs Add previous commit to .git-blame-ignore-revs. 2025-10-21 10:02:19 -05:00
.gitattributes Fix git whitespace warning 2025-08-15 10:32:07 +02:00
.gitignore Update top-level .gitignore. 2022-12-04 15:23:00 -05:00
aclocal.m4 autoconf: Move export_dynamic determination to configure 2022-12-06 18:55:28 -08:00
configure Stamp 17.7. 2025-11-10 16:53:58 -05:00
configure.ac Stamp 17.7. 2025-11-10 16:53:58 -05:00
COPYRIGHT Align organization wording in copyright statement 2025-05-16 11:20:07 -04:00
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 Adapt REL_17_STABLE to its new status as a stable branch 2024-07-01 08:05:35 +09:00
meson.build Add check for large files in meson.build 2025-11-12 09:02:32 +09:00
meson_options.txt Allow selecting the git revision to be packaged by "make dist". 2024-05-03 11:08:50 -04:00
README.md Adapt REL_17_STABLE to its new status as a stable branch 2024-07-01 08:05:35 +09:00

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/17/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/17/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/.