| // { dg-do compile { target c++20 } } |
| |
| template <class T> |
| concept Destructible = false; |
| |
| template <class T, class...Args> |
| concept ConstructibleObject = |
| // Concept evaluation should short-circuit even the template |
| // substitution, so we shouldn't even substitute into the requires |
| // constraint and the unimplemented multi-dimensional new T{...} |
| // initialization. ATM we do, but as long as we don't output the |
| // sorry() message we used to for such constructs when asked not |
| // to issue errors, this shouldn't be a problem for this and |
| // similar cases. |
| Destructible<T> && requires (Args&&...args) { |
| new T{ (Args&&)args... }; |
| }; |
| |
| int main() { |
| using T = int[2][2]; |
| // GCC has not implemented initialization of multi-dimensional |
| // arrays with new{} expressions. |
| static_assert(!ConstructibleObject<T, T>); |
| } |
