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 // UNSUPPORTED: c++98, c++03
18 
19 #include <tuple>
20 #include <utility>
21 #include <memory>
22 #include <cassert>
23 
24 struct B
25 {
26     int id_;
27 
BB28     explicit B(int i = 0) : id_(i) {}
29 
~BB30     virtual ~B() {}
31 };
32 
33 struct D
34     : B
35 {
DD36     explicit D(int i) : B(i) {}
37 };
38 
main()39 int main()
40 {
41     {
42         typedef std::pair<double, std::unique_ptr<D>> T0;
43         typedef std::tuple<int, std::unique_ptr<B>> T1;
44         T0 t0(2.5, std::unique_ptr<D>(new D(3)));
45         T1 t1;
46         t1 = std::move(t0);
47         assert(std::get<0>(t1) == 2);
48         assert(std::get<1>(t1)->id_ == 3);
49     }
50 }
51