[Bug c/117025] [C2y] Implement N3369, New _Lengthof()

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117025

--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Joseph Myers <js...@gcc.gnu.org>:

https://gcc.gnu.org/g:9d9ac1670af224bb9fa2411fe392f98d20fbf751

commit r16-918-g9d9ac1670af224bb9fa2411fe392f98d20fbf751
Author: Alejandro Colomar <a...@kernel.org>
Date:   Thu May 22 01:15:43 2025 +0200

    c: Add -Wpedantic diagnostic for _Countof [PR117025]

    It has been standardized in C2y.

            PR c/117025

    gcc/c/ChangeLog:

            * c-parser.cc (c_parser_sizeof_or_countof_expression):
            Add -Wpedantic diagnostic for _Countof in <= C23 mode.

    gcc/testsuite/ChangeLog:

            * gcc.dg/countof-compat.c: New test.
            * gcc.dg/countof-no-compat.c: New test.
            * gcc.dg/countof-pedantic.c: New test.
            * gcc.dg/countof-pedantic-errors.c: New test.

    Signed-off-by: Alejandro Colomar <a...@kernel.org>