//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// <coroutine>
// template <class Promise = void>
// struct coroutine_handle;
// static coroutine_handle from_address(void*) noexcept
#include <coroutine>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
template <class C>
void do_test() {
{
C c = C::from_address(nullptr);
static_assert(noexcept(C::from_address(nullptr)), "");
static_assert(std::is_same<decltype(C::from_address(nullptr)), C>::value, "");
assert(c.address() == nullptr);
}
{
char dummy = 42;
C c = C::from_address((void*)&dummy);
assert(c.address() == &dummy);
}
{
TEST_IGNORE_NODISCARD C::from_address((int*)nullptr);
TEST_IGNORE_NODISCARD C::from_address((void*)nullptr);
TEST_IGNORE_NODISCARD C::from_address((char*)nullptr);
}
{
char dummy = 42;
C c = C::from_address(&dummy);
int* p = (int*)c.address();
std::coroutine_handle<> c2 = std::coroutine_handle<>::from_address(p);
assert(c2 == c);
}
}
int main(int, char**)
{
do_test<std::coroutine_handle<>>();
do_test<std::coroutine_handle<int>>();
return 0;
}