[Bug c++/96637] [9/10/11/12/13 Regression] ICE in tree check: expected tree_list, have error_mark in cp_check_const_attributes, at cp/decl2.c:1423

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96637

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Marek Polacek <mpola...@gcc.gnu.org>:

https://gcc.gnu.org/g:da2c56ee601ac696a76e469e33c88313428c5c5a

commit r13-770-gda2c56ee601ac696a76e469e33c88313428c5c5a
Author: Marek Polacek <pola...@redhat.com>
Date:   Thu Apr 28 13:21:41 2022 -0400

    c++: fix ICE on invalid attributes [PR96637]

    When chaining attributes, attr_chainon should be used rather than plain
    chainon, so that we don't end up with a TREE_LIST where one of the elements
    is error_mark_node, which causes problems.  parser.cc has already been
    fixed to use attr_chainon, but decl.cc has not.  Until now.

            PR c++/96637

    gcc/cp/ChangeLog:

            * cp-tree.h (attr_chainon): Declare.
            * decl.cc (start_decl): Use attr_chainon.
            (grokdeclarator): Likewise.
            * parser.cc (cp_parser_statement): No longer static.

    gcc/testsuite/ChangeLog:

            * g++.dg/parse/error64.C: New test.