File: default.pass.cpp

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//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <atomic>

// struct atomic_flag

// atomic_flag() = default;

#include <atomic>
#include <new>
#include <cassert>

int main()
{
    std::atomic_flag f;

    {
        typedef std::atomic_flag A;
        _ALIGNAS_TYPE(A) char storage[sizeof(A)] = {1};
        A& zero = *new (storage) A();
        assert(!zero.test_and_set());
        zero.~A();
    }
}