https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88754
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Patrick Palka <ppa...@gcc.gnu.org>: https://gcc.gnu.org/g:3f5af3f71195b7f1ebe32bd0d695b59904fff778 commit r10-7779-g3f5af3f71195b7f1ebe32bd0d695b59904fff778 Author: Patrick Palka <ppa...@redhat.com> Date: Thu Apr 16 16:45:15 2020 -0400 c++: Hard error with tentative parse of declaration [PR88754] In the testcase for this PR, we try to parse the statement A(value<0>()); first tentatively as a declaration (with a parenthesized declarator), and during this tentative parse we end up issuing a hard error from cp_parser_check_template_parameters about its invalidness as a declaration. Rather than issuing a hard error, it seems we should instead simulate an error since we're parsing tentatively. This would then allow cp_parser_statement to recover and successfully parse the statement as an expression-statement instead. gcc/cp/ChangeLog: PR c++/88754 * parser.c (cp_parser_check_template_parameters): Before issuing a hard error, first try simulating an error instead. gcc/testsuite/ChangeLog: PR c++/88754 * g++.dg/parse/ambig10.C: New test.
