[Bug middle-end/95673] missing -Wstring-compare for an impossible strncmp test

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95673

--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Martin Sebor <mse...@gcc.gnu.org>:

https://gcc.gnu.org/g:b1ecb86569f63f897f6a95049c4ccf400bddeaad

commit r11-5072-gb1ecb86569f63f897f6a95049c4ccf400bddeaad
Author: Martin Sebor <mse...@redhat.com>
Date:   Mon Nov 16 19:47:39 2020 -0700

    PR middle-end/95673 - missing -Wstring-compare for an impossible strncmp
test

    gcc/ChangeLog:

            PR middle-end/95673
            * tree-ssa-strlen.c (used_only_for_zero_equality): Rename...
            (use_in_zero_equality): ...to this.  Add a default argument.
            (handle_builtin_memcmp): Adjust to the name change above.
            (handle_builtin_string_cmp): Same.
            (maybe_warn_pointless_strcmp): Same.  Pass in an explicit argument.

    gcc/testsuite/ChangeLog:

            PR middle-end/95673
            * gcc.dg/Wstring-compare-3.c: New test.