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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 <cassert>
int main()
{
std::atomic_flag f;
}