import Module; #include <coroutine> #include <iostream> struct fire_and_forget {}; template <typename... Args> struct std::coroutine_traits<fire_and_forget, Args...> { struct promise_type { fire_and_forget get_return_object() const noexcept { return{}; } void return_void() const noexcept { } suspend_never initial_suspend() const noexcept { return{}; } suspend_never final_suspend() const noexcept { return{}; } void unhandled_exception() const noexcept { std::terminate(); } }; }; fire_and_forget test() { winrt::Windows::Foundation::IAsyncAction a; co_await a; } int main() { }