1// Copyright (C) 2014-2015 Free Software Foundation, Inc. 2// 3// This file is part of the GNU ISO C++ Library. This library is free 4// software; you can redistribute it and/or modify it under the 5// terms of the GNU General Public License as published by the 6// Free Software Foundation; either version 3, or (at your option) 7// any later version. 8 9// This library is distributed in the hope that it will be useful, 10// but WITHOUT ANY WARRANTY; without even the implied warranty of 11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12// GNU General Public License for more details. 13 14// You should have received a copy of the GNU General Public License along 15// with this library; see the file COPYING3. If not see 16// <http://www.gnu.org/licenses/>. 17 18// { dg-options "-std=gnu++11" } 19// { dg-require-gthreads "" } 20 21#include <memory> 22 23int main() 24{ 25 using test_type = std::__shared_ptr<int, std::_S_single>; 26 bool test __attribute__ ((unused)) = false; 27 constexpr auto mo = std::memory_order_seq_cst; 28 const test_type p; 29 test = std::atomic_is_lock_free(&p); 30 test_type p2 = std::atomic_load(&p); 31 test_type p3 = std::atomic_load_explicit(&p, mo); 32 std::atomic_store(&p2, p); 33 std::atomic_store_explicit(&p2, p, mo); 34 test_type p4 = std::atomic_exchange(&p2, p); 35 p4 = std::atomic_exchange_explicit(&p2, p, mo); 36 test = std::atomic_compare_exchange_weak(&p2, &p3, p); 37 test = std::atomic_compare_exchange_strong(&p2, &p3, p); 38 test = std::atomic_compare_exchange_weak_explicit(&p2, &p3, p, mo, mo); 39 test = std::atomic_compare_exchange_strong_explicit(&p2, &p3, p, mo, mo); 40} 41