#PR91979 demangling nullptr expression
_Z3fooILPv0EEvPN9enable_ifIXeqT_LDnEEvE4typeE
-void foo<(void*)0>(enable_if<((void*)0)==((decltype(nullptr))), void>::type*)
+void foo<(void*)0>(enable_if<((void*)0)==(decltype(nullptr)), void>::type*)
+
+_ZNK5coro15emptyawEv
+coro1::empty::operator co_await() const