https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94310
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
The difference stems from the fact that in this test:
template<typename>
struct B { };
template<typename... Types>
struct A : public B<Types>... {
using B<Types>::B...; // #1
using B<Types>::operator=...; // #2
};
int main() {}
when parsing B<Types> in #2 cp_parser_lookup_name finds #1, which is a
dependent USING_DECL. strip_using_decl doesn't do anything with such a
USING_DECL, so we think that we haven't found a template name.
