[Bug testsuite/101751] asan_test.C fails with excess error with glibc-2.34

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101751

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Martin Sebor
<mse...@gcc.gnu.org>:

https://gcc.gnu.org/g:5635c975576604afda35543f672c2cad79cb0046

commit r11-9397-g5635c975576604afda35543f672c2cad79cb0046
Author: Martin Sebor <mse...@redhat.com>
Date:   Thu Dec 9 11:24:14 2021 -0700

    Avoid expecting nonzero size for access none void* arguments [PR101751].

    Resolves:
    PR middle-end/101751 - attribute access none with void pointer expects
nonzero size

    gcc/ChangeLog:

            PR middle-end/101751
            * doc/extend.texi (attribute access): Adjust.
            * calls.c (maybe_warn_rdwr_sizes): Treat access mode none on a
void*
            argument as expecting as few as zero bytes.

    gcc/testsuite/ChangeLog:

            PR middle-end/101751
            * gcc.dg/Wstringop-overflow-86.c: New test.