ed760f40b7
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@115054 91177308-0d34-0410-b5e6-96231b3b80d8
26 lines
672 B
C++
26 lines
672 B
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <atomic>
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// struct atomic_flag
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// bool test_and_set(memory_order = memory_order_seq_cst);
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// bool test_and_set(memory_order = memory_order_seq_cst) volatile;
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#include <atomic>
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#include <cassert>
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int main()
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{
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std::atomic_flag f = ATOMIC_FLAG_INIT;
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assert(f.test_and_set() == 0);
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assert(f.test_and_set() == 1);
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}
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