[Bug c++/99500] [11 Regression] ICE: tree check: expected tree that contains 'decl minimal' structure, have 'error_mark' in cp_parser_requirement_parameter_list, at cp/parser.c:28828

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99500

--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Marek Polacek <mpola...@gcc.gnu.org>:

https://gcc.gnu.org/g:bd9b262fa9243e08fefa4973f08d1f09f6694ba0

commit r11-7727-gbd9b262fa9243e08fefa4973f08d1f09f6694ba0
Author: Marek Polacek <pola...@redhat.com>
Date:   Tue Mar 9 20:55:14 2021 -0500

    c++: Fix error-recovery with requires expression [PR99500]

    This fixes an ICE on invalid code where one of the parameters was
    error_mark_node and thus resetting its DECL_CONTEXT crashed.

    gcc/cp/ChangeLog:

            PR c++/99500
            * parser.c (cp_parser_requirement_parameter_list): Handle
            error_mark_node.

    gcc/testsuite/ChangeLog:

            PR c++/99500
            * g++.dg/cpp2a/concepts-err3.C: New test.