//===----------------------------------------------------------------------===//
//
// 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: no-threads
// UNSUPPORTED: c++03, c++11
// <shared_mutex>
// template <class Mutex> class shared_lock;
// bool owns_lock() const noexcept;
#include <shared_mutex>
#include <cassert>
#include "test_macros.h"
std::shared_timed_mutex m;
int main(int, char**)
{
std::shared_lock<std::shared_timed_mutex> lk0;
assert(lk0.owns_lock() == false);
std::shared_lock<std::shared_timed_mutex> lk1(m);
assert(lk1.owns_lock() == true);
lk1.unlock();
assert(lk1.owns_lock() == false);
static_assert(noexcept(lk0.owns_lock()), "owns_lock must be noexcept");
return 0;
}