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 T1, class T2> struct pair 13 14 // template<class U, class V> pair& operator=(pair<U, V>&& p); 15 16 #include <utility> 17 #include <memory> 18 #include <cassert> 19 20 struct Base 21 { 22 virtual ~Base() {} 23 }; 24 25 struct Derived 26 : public Base 27 { 28 }; 29 30 int main() 31 { 32 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 33 { 34 typedef std::pair<std::unique_ptr<Derived>, short> P1; 35 typedef std::pair<std::unique_ptr<Base>, long> P2; 36 P1 p1(std::unique_ptr<Derived>(), 4); 37 P2 p2; 38 p2 = std::move(p1); 39 assert(p2.first == nullptr); 40 assert(p2.second == 4); 41 } 42 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 43 } 44
