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// shared_ptr<T> 23// atomic_exchange_explicit(shared_ptr<T>* p, shared_ptr<T> r) 24 25#include <memory> 26#include <cassert> 27 28int main() 29{ 30#if __has_feature(cxx_atomic) 31 { 32 std::shared_ptr<int> p(new int(4)); 33 std::shared_ptr<int> r(new int(3)); 34 r = std::atomic_exchange_explicit(&p, r, std::memory_order_seq_cst); 35 assert(*p == 3); 36 assert(*r == 4); 37 } 38#endif 39} 40