| // { dg-additional-options "-fsyntax-only -fexceptions -w" } | |
| // Diagose bad traits traits : fake something faulty. | |
| namespace std { | |
| // name is present, but not a template. | |
| struct coroutine_traits { | |
| }; | |
| } | |
| int | |
| bad_coroutine (void) | |
| { | |
| co_yield 5; // { dg-error {coroutines require a traits template; cannot find 'std::coroutine_traits'} } | |
| co_return; | |
| } |