1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// UNSUPPORTED: libcpp-has-no-threads 11// 12// This test uses new symbols that were not defined in the libc++ shipped on 13// darwin11 and darwin12: 14// XFAIL: with_system_cxx_lib=x86_64-apple-darwin11 15// XFAIL: with_system_cxx_lib=x86_64-apple-darwin12 16 17// <memory> 18 19// shared_ptr 20 21// template <class T> 22// bool 23// atomic_compare_exchange_strong_explicit(shared_ptr<T>* p, shared_ptr<T>* v, 24// shared_ptr<T> w, memory_order success, 25// memory_order failure); 26 27#include <memory> 28#include <cassert> 29 30int main() 31{ 32#if __has_feature(cxx_atomic) 33 { 34 std::shared_ptr<int> p(new int(4)); 35 std::shared_ptr<int> v(new int(3)); 36 std::shared_ptr<int> w(new int(2)); 37 bool b = std::atomic_compare_exchange_strong_explicit(&p, &v, w, 38 std::memory_order_seq_cst, 39 std::memory_order_seq_cst); 40 assert(b == false); 41 assert(*p == 4); 42 assert(*v == 4); 43 assert(*w == 2); 44 } 45 { 46 std::shared_ptr<int> p(new int(4)); 47 std::shared_ptr<int> v = p; 48 std::shared_ptr<int> w(new int(2)); 49 bool b = std::atomic_compare_exchange_strong_explicit(&p, &v, w, 50 std::memory_order_seq_cst, 51 std::memory_order_seq_cst); 52 assert(b == true); 53 assert(*p == 2); 54 assert(*v == 4); 55 assert(*w == 2); 56 } 57#endif 58} 59