[Bug c/99972] missing -Wunused-result on a call to a locally redeclared warn_unused_result function

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99972

--- Comment #4 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:da879e01ecd35737c18be1da3324f4560aba1961

commit r11-8205-gda879e01ecd35737c18be1da3324f4560aba1961
Author: Martin Sebor <mse...@redhat.com>
Date:   Thu Apr 15 15:49:30 2021 -0600

    Propagate type attribute when merging extern declarations at local scope.

    Resolves:
    PR c/99420 - bogus -Warray-parameter on a function redeclaration in
function scope
    PR c/99972 - missing -Wunused-result on a call to a locally redeclared
warn_unused_result function

    gcc/c/ChangeLog:

            PR c/99420
            PR c/99972
            * c-decl.c (pushdecl): Always propagate type attribute.

    gcc/testsuite/ChangeLog:

            PR c/99420
            PR c/99972
            * gcc.dg/Warray-parameter-9.c: New test.
            * gcc.dg/Wnonnull-6.c: New test.
            * gcc.dg/Wreturn-type3.c: New test.
            * gcc.dg/Wunused-result.c: New test.
            * gcc.dg/attr-noreturn.c: New test.
            * gcc.dg/attr-returns-nonnull.c: New test.