[Bug c++/92517] [10 Regression] ICE on incorrect syntax involving requires and decltype

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92517

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jason Merrill <jason@gcc.gnu.org>:

https://gcc.gnu.org/g:82aee6dd61e2a5b4e4b124f896c8403169688f41

commit r10-6506-g82aee6dd61e2a5b4e4b124f896c8403169688f41
Author: Jason Merrill <jason@redhat.com>
Date:   Thu Feb 6 16:14:19 2020 -0500

    c++: Fix ICE on nonsense requires-clause.

    Here we were swallowing all the syntax errors by parsing tentatively, and
    returning error_mark_node without ever actually giving an error.  Fixed by
    using save_tokens/rollback_tokens instead.

        PR c++/92517
        * parser.c (cp_parser_constraint_primary_expression): Do the main
        parse non-tentatively.