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 // UNSUPPORTED: c++98, c++03
17 
18 #include <tuple>
19 #include <utility>
20 #include <memory>
21 #include <cassert>
22 
23 struct B
24 {
25     int id_;
26 
BB27     explicit B(int i) : id_(i) {}
28 
~BB29     virtual ~B() {}
30 };
31 
32 struct D
33     : B
34 {
DD35     explicit D(int i) : B(i) {}
36 };
37 
main()38 int main()
39 {
40     {
41         typedef std::pair<long, std::unique_ptr<D>> T0;
42         typedef std::tuple<long long, std::unique_ptr<B>> T1;
43         T0 t0(2, std::unique_ptr<D>(new D(3)));
44         T1 t1 = std::move(t0);
45         assert(std::get<0>(t1) == 2);
46         assert(std::get<1>(t1)->id_ == 3);
47     }
48 }
49