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// RUN: %clang_cc1 -std=c++2b %s -fsyntax-only -verify
#include "Inputs/std-coroutine.h"
struct S;
template <typename T>
class coro_test {
public:
struct promise_type;
using handle = std::coroutine_handle<promise_type>;
struct promise_type {
promise_type(const promise_type&) = delete; // #copy-ctr
promise_type(T); // #candidate
coro_test get_return_object();
std::suspend_never initial_suspend();
std::suspend_never final_suspend() noexcept;
void return_void();
void unhandled_exception();
template<typename Arg, typename... Args>
void* operator new(decltype(0zu) sz, Arg&&, Args&... args) {
static_assert(!__is_same(__decay(Arg), S), "Ok"); // expected-error 2{{Ok}}
}
};
private:
handle h;
};
template <typename Ret, typename... P>
struct std::coroutine_traits<coro_test<S&>, Ret, P...> {
using promise_type = coro_test<S&>::promise_type;
static_assert(!__is_same(Ret, S&), "Ok"); // expected-error{{static assertion failed due to requirement '!__is_same(S &, S &)': Ok}}
};
struct S {
coro_test<S&> ok(this S&, int) {
co_return; // expected-note {{in instantiation}}
}
coro_test<const S&> ok2(this const S&) { // expected-note {{in instantiation}}
co_return;
}
coro_test<int> ko(this const S&) { // expected-error {{no matching constructor for initialization of 'std::coroutine_traits<coro_test<int>, const S &>::promise_type'}} \
// expected-note {{in instantiation}} \
// FIXME: the message below is unhelpful but this is pre-existing
// expected-note@#candidate {{candidate constructor not viable: requires 1 argument, but 0 were provided}} \
// expected-note@#copy-ctr {{candidate constructor not viable}}
co_return;
}
};
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