[Bug c/98487] ICE: tree check: expected identifier_node, have tree_list in is_attribute_p, at attribs.h:155 [C2X or C++11 attribute syntax, gnu::format and -Wsuggest-attribute=format] or a suggest warning (release checking)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98487

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Marek Polacek
<mpola...@gcc.gnu.org>:

https://gcc.gnu.org/g:0e345504ec9349d9a3bf826c3e16b7e973739485

commit r12-8993-g0e345504ec9349d9a3bf826c3e16b7e973739485
Author: Marek Polacek <pola...@redhat.com>
Date:   Fri Dec 16 12:28:43 2022 -0500

    c-family: Fix ICE with -Wsuggest-attribute [PR98487]

    Here we crash because check_function_format was using TREE_PURPOSE
    directly rather than using get_attribute_name.

            PR c/98487

    gcc/c-family/ChangeLog:

            * c-format.cc (check_function_format): Use get_attribute_name.

    gcc/testsuite/ChangeLog:

            * c-c++-common/Wsuggest-attribute-1.c: New test.

    (cherry picked from commit 68e51bd0a85794cd437d3e740357dfef84dc560d)