40 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <atomic>10 11// struct atomic_flag12 13// void atomic_flag_clear(volatile atomic_flag*);14// void atomic_flag_clear(atomic_flag*);15 16#include <atomic>17#include <cassert>18 19#include "test_macros.h"20 21int main(int, char**)22{23 {24 std::atomic_flag f;25 f.clear();26 f.test_and_set();27 std::atomic_flag_clear(&f);28 assert(f.test_and_set() == 0);29 }30 {31 volatile std::atomic_flag f;32 f.clear();33 f.test_and_set();34 std::atomic_flag_clear(&f);35 assert(f.test_and_set() == 0);36 }37 38 return 0;39}40