38 lines
1016 B
C++
38 lines
1016 B
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// UNSUPPORTED: libcpp-has-no-threads
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// UNSUPPORTED: c++98, c++03, c++11
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// XFAIL: dylib-has-no-shared_mutex
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// <shared_mutex>
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// template <class Mutex> class shared_lock;
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// mutex_type *mutex() const noexcept;
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#include <shared_mutex>
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#include <cassert>
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#include "test_macros.h"
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std::shared_timed_mutex m;
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int main(int, char**)
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{
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std::shared_lock<std::shared_timed_mutex> lk0;
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assert(lk0.mutex() == nullptr);
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std::shared_lock<std::shared_timed_mutex> lk1(m);
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assert(lk1.mutex() == &m);
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lk1.unlock();
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assert(lk1.mutex() == &m);
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static_assert(noexcept(lk0.mutex()), "mutex() must be noexcept");
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return 0;
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}
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