| // { dg-do compile { target c++11 } } | |
| #include <future> | |
| // C++20 [futures.task.members] | |
| // Mandates: is_invocable_r_v<R, F&, ArgTypes...> is true. | |
| int f(); | |
| std::packaged_task<const int&()> task(f); | |
| // { dg-error "dangling reference" "" { target { c++14_down } } 0 } | |
| // { dg-error "no matching function" "" { target c++17 } 0 } | |
| // { dg-error "enable_if" "" { target c++17 } 0 } |