| // { dg-additional-options "-fsyntax-only -fexceptions -w" } | |
| // Diagose missing coroutine handle class template. | |
| namespace std { | |
| // coroutine traits | |
| template<typename _R, typename...> struct coroutine_traits { | |
| using promise_type = typename _R::promise_type; | |
| }; | |
| } | |
| int | |
| bad_coroutine (void) | |
| { | |
| co_yield 5; // { dg-error {coroutines require a handle class template; cannot find 'std::coroutine_handle'} } | |
| co_return; | |
| } |