[Bug tree-optimization/123374] [16 regression] elfutils: bogus warning when building debuginfod.cxx since r16-5258

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123374

--- Comment #17 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Siddhesh Poyarekar
<siddhesh@gcc.gnu.org>:

https://gcc.gnu.org/g:6345c1c11c2024d707ab1f8eb556a1eddd65dba0

commit r16-6531-g6345c1c11c2024d707ab1f8eb556a1eddd65dba0
Author: Siddhesh Poyarekar <siddhesh@gotplt.org>
Date:   Tue Jan 6 10:21:50 2026 -0500

    warn_access: Limit waccess2 to dangling pointer checks [PR 123374]

    The second pass of warn_access (waccess2) was added to implement
    dangling pointer checks but it implicitly ran the early checks too,
    which issues false warnings on code that has not been fully optimized.

    Limit this second run to only dangling pointer checks for call
    statements.  This does not break any of the existing warning tests, so
    it didn't seem to add any actual value for the additional run anyway.

    gcc/ChangeLog:

            PR tree-optimization/123374
            * gimple-ssa-warn-access.cc (pass_waccess::set_pass_param): Add
            a second parameter.
            (pass_waccess::check_call): Skip access checks for waccess2.
            (pass_waccess::execute): Drop initialization of
            M_CHECK_DANGLING_P.
            * passes.def: Adjust.

    gcc/testsuite/ChangeLog:

            PR tree-optimization/123374
            * g++.dg/warn/pr123374.C: New test.

    Signed-off-by: Siddhesh Poyarekar <siddhesh@gotplt.org>