[Bug middle-end/121261] [16 regression] Problems with bootstrap-ubsan since r16-2287-ge079474981a894

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121261

--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Alfie Richards
<alfiericha...@gcc.gnu.org>:

https://gcc.gnu.org/g:c1102be3b25bde9989561b2610f8ee721a33a8e7

commit r16-2600-gc1102be3b25bde9989561b2610f8ee721a33a8e7
Author: Alfie Richards <alfie.richa...@arm.com>
Date:   Mon Jul 28 13:32:45 2025 +0000

    Fix UB in string_slice::operator== (PR 121261)

    This adds a nullptr check to fix a regression where it is possible to call
    `memcmp (NULL, NULL, 0)` which is UB prior to C26.

    This fixes the bootstrap-ubsan build.

    gcc/ChangeLog:
            PR middle-end/121261
            * vec.h: Add null ptr check.