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Peter Eisentraut 63275ce84d Hardcode override of typeof_unqual for clang-for-bitcode 
The fundamental problem is that when we call clang to generate
bitcode, we might be using configure results from a different
compiler, which might not be fully compatible with the clang we are
using.  In practice, clang supports most things other compilers
support, so this has apparently not been a problem in practice.

But commits 4cfce4e62c, 0af05b5dbb, and 59292f7aac have been
struggling to make typeof_unqual work in this situation.  Clang added
support in version 19, GCC in version 14, so if you are using, say,
GCC 14 and Clang 16, the compilation with the latter will fail.  Such
combinations are not very likely in practice, because GCC 14 and Clang
19 were released within a few months of each other, and so Linux
distributions are likely to have suitable combinations.  But some
buildfarm members and some Fedora versions are affected, so this tries
to fix it.

The fully correct solution would be to run a separate set of configure
tests for that clang-for-bitcode, but that would be very difficult to
implement, and probably of limited use in practice.  So the workaround
here is that we hardcodedly override the configure result under clang
based on the version number.  As long as we only have a few of these
cases, this should be manageable.

Also swap the order of the tests of typeof_unqual: Commit 59292f7aac
tested the underscore variant first, but the reasons for that are now
gone.

Reviewed-by: Jelte Fennema-Nio <postgres@jeltef.nl>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://www.postgresql.org/message-id/flat/92f9750f-c7f6-42d8-9a4a-85a3cbe808f3%40eisentraut.org
2026-03-16 19:24:49 +01:00
.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 Reduce header inclusions via execnodes.h 2026-03-16 14:34:57 +01:00
doc SQL Property Graph Queries (SQL/PGQ) 2026-03-16 10:14:18 +01:00
src Hardcode override of typeof_unqual for clang-for-bitcode 2026-03-16 19:24:49 +01:00
.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/.