https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94480
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jason Merrill <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:845d451e1f73d8a9a84382c3c6d4fca9c8220403 commit r10-7612-g845d451e1f73d8a9a84382c3c6d4fca9c8220403 Author: Jason Merrill <ja...@redhat.com> Date: Tue Apr 7 00:45:26 2020 -0400 c++: requires-expression and tentative parse [PR94480] The problem here was that cp_parser_requires_expression committing to a tentative parse confused cp_parser_decltype_expr, which needs to still be tentative. The only reason to commit here is to get syntax errors within the requires-expression, which we can still do when the commit is firewalled from the enclosing context. gcc/cp/ChangeLog 2020-04-07 Jason Merrill <ja...@redhat.com> PR c++/94480 * parser.c (cp_parser_requires_expression): Use tentative_firewall.
