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 // <utility> 11 12 // template<class T> 13 // requires MoveAssignable<T> && MoveConstructible<T> 14 // void 15 // swap(T& a, T& b); 16 17 #include <utility> 18 #include <cassert> 19 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 20 #include <memory> 21 #endif 22 23 void 24 test() 25 { 26 int i = 1; 27 int j = 2; 28 std::swap(i, j); 29 assert(i == 2); 30 assert(j == 1); 31 } 32 33 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 34 35 void 36 test1() 37 { 38 std::unique_ptr<int> i(new int(1)); 39 std::unique_ptr<int> j(new int(2)); 40 std::swap(i, j); 41 assert(*i == 2); 42 assert(*j == 1); 43 } 44 45 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 46 47 int main() 48 { 49 test(); 50 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 51 test1(); 52 #endif 53 } 54
