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// { dg-additional-options "-fsyntax-only" }
#include <coroutine>
#include <vector>
template <typename> struct promise {
struct final_awaitable {
bool await_ready() noexcept;
template <typename Promise>
std::coroutine_handle<>
await_suspend(std::coroutine_handle<Promise>) noexcept;
void await_resume() noexcept;
};
auto get_return_object() {
return std::coroutine_handle<promise>::from_promise(*this);
}
auto initial_suspend() { return std::suspend_always(); }
auto final_suspend() noexcept { return true; }
void unhandled_exception();
};
template <typename T> struct task {
using promise_type = promise<T>;
task(std::coroutine_handle<promise<T>>);
bool await_ready();
std::coroutine_handle<> await_suspend(std::coroutine_handle<>);
T await_resume();
};
task<std::vector<int>> foo() { // { dg-error {awaitable type 'bool' is not a structure} }
while ((co_await foo()).empty())
;
}
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