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