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: c++98, c++03 11 12 // <utility> 13 14 // template <class T1, class T2> struct pair 15 16 // template<class U, class V> pair& operator=(pair<U, V>&& p); 17 18 #include <utility> 19 #include <memory> 20 #include <cassert> 21 22 struct Base 23 { 24 virtual ~Base() {} 25 }; 26 27 struct Derived 28 : public Base 29 { 30 }; 31 32 int main() 33 { 34 { 35 typedef std::pair<std::unique_ptr<Derived>, short> P1; 36 typedef std::pair<std::unique_ptr<Base>, long> P2; 37 P1 p1(std::unique_ptr<Derived>(), static_cast<short>(4)); 38 P2 p2; 39 p2 = std::move(p1); 40 assert(p2.first == nullptr); 41 assert(p2.second == 4); 42 } 43 } 44
