https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105436
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I think the fix is just
--- a/gcc/cp/parser.cc
+++ b/gcc/cp/parser.cc
@@ -33224,7 +33224,6 @@ cp_parser_next_token_ends_template_argument_p
(cp_parser *parser)
|| ((cxx_dialect != cxx98) && token->type == CPP_RSHIFT)
/* For better diagnostics, treat >>= like that too, that
shouldn't appear non-nested in template arguments. */
- || token->type == CPP_GREATER_EQ
|| token->type == CPP_RSHIFT_EQ);
}
it doesn't regress anything and fixes this test. Probably just an oversight,
the code doesn't match the comment.