[Bug c++/33925] [10/11/12 Regression] gcc -Waddress lost some useful warnings

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33925

--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Martin Sebor <msebor@gcc.gnu.org>:

https://gcc.gnu.org/g:16137fbb9256ef365dd498d39024eb33de1a4cd8

commit r12-5410-g16137fbb9256ef365dd498d39024eb33de1a4cd8
Author: Martin Sebor <msebor@redhat.com>
Date:   Fri Nov 19 09:44:31 2021 -0700

    Restore ancient -Waddress for weak symbols [PR33925].

    Resolves:
    PR c/33925 - gcc -Waddress lost some useful warnings
    PR c/102867 - -Waddress from macro expansion in readelf.c

    gcc/c-family/ChangeLog:

            PR c++/33925
            PR c/102867
            * c-common.c (decl_with_nonnull_addr_p): Call maybe_nonzero_address
            and improve handling tof defined symbols.

    gcc/c/ChangeLog:

            PR c++/33925
            PR c/102867
            * c-typeck.c (maybe_warn_for_null_address): Suppress warnings for
            code resulting from macro expansion.

    gcc/cp/ChangeLog:

            PR c++/33925
            PR c/102867
            * typeck.c (warn_for_null_address): Suppress warnings for code
            resulting from macro expansion.

    gcc/ChangeLog:

            PR c++/33925
            PR c/102867
            * doc/invoke.texi (-Waddress): Update.

    gcc/testsuite/ChangeLog:

            PR c++/33925
            PR c/102867
            * g++.dg/warn/Walways-true-2.C: Adjust to avoid a valid warning.
            * c-c++-common/Waddress-5.c: New test.
            * c-c++-common/Waddress-6.c: New test.
            * g++.dg/warn/Waddress-7.C: New test.
            * gcc.dg/Walways-true-2.c: Adjust to avoid a valid warning.
            * gcc.dg/weak/weak-3.c: Expect a warning.