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: availability=macosx10.7 15 // XFAIL: availability=macosx10.8 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 // UNSUPPORTED: c++98, c++03 26 27 #include <memory> 28 #include <cassert> 29 30 #include "test_macros.h" 31 32 int main() 33 { 34 { 35 std::shared_ptr<int> p(new int(4)); 36 std::shared_ptr<int> r(new int(3)); 37 r = std::atomic_exchange_explicit(&p, r, std::memory_order_seq_cst); 38 assert(*p == 3); 39 assert(*r == 4); 40 } 41 } 42
