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 // <tuple>
11 
12 // template <class... Types> class tuple;
13 
14 // template <class U1, class U2>
15 //   tuple& operator=(pair<U1, U2>&& u);
16 
17 #include <tuple>
18 #include <utility>
19 #include <memory>
20 #include <cassert>
21 
22 struct B
23 {
24     int id_;
25 
26     explicit B(int i = 0) : id_(i) {}
27 
28     virtual ~B() {}
29 };
30 
31 struct D
32     : B
33 {
34     explicit D(int i) : B(i) {}
35 };
36 
37 int main()
38 {
39     {
40         typedef std::pair<double, std::unique_ptr<D>> T0;
41         typedef std::tuple<int, std::unique_ptr<B>> T1;
42         T0 t0(2.5, std::unique_ptr<D>(new D(3)));
43         T1 t1;
44         t1 = std::move(t0);
45         assert(std::get<0>(t1) == 2);
46         assert(std::get<1>(t1)->id_ == 3);
47     }
48 }
49