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... UTypes> tuple(tuple<UTypes...>&& u);
15
16 // UNSUPPORTED: c++98, c++03
17
18 #include <tuple>
19 #include <string>
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::tuple<double> T0;
42 typedef std::tuple<int> T1;
43 T0 t0(2.5);
44 T1 t1 = std::move(t0);
45 assert(std::get<0>(t1) == 2);
46 }
47 {
48 typedef std::tuple<double, char> T0;
49 typedef std::tuple<int, int> T1;
50 T0 t0(2.5, 'a');
51 T1 t1 = std::move(t0);
52 assert(std::get<0>(t1) == 2);
53 assert(std::get<1>(t1) == int('a'));
54 }
55 {
56 typedef std::tuple<double, char, D> T0;
57 typedef std::tuple<int, int, B> T1;
58 T0 t0(2.5, 'a', D(3));
59 T1 t1 = std::move(t0);
60 assert(std::get<0>(t1) == 2);
61 assert(std::get<1>(t1) == int('a'));
62 assert(std::get<2>(t1).id_ == 3);
63 }
64 {
65 D d(3);
66 typedef std::tuple<double, char, D&> T0;
67 typedef std::tuple<int, int, B&> T1;
68 T0 t0(2.5, 'a', d);
69 T1 t1 = std::move(t0);
70 d.id_ = 2;
71 assert(std::get<0>(t1) == 2);
72 assert(std::get<1>(t1) == int('a'));
73 assert(std::get<2>(t1).id_ == 2);
74 }
75 {
76 typedef std::tuple<double, char, std::unique_ptr<D>> T0;
77 typedef std::tuple<int, int, std::unique_ptr<B>> T1;
78 T0 t0(2.5, 'a', std::unique_ptr<D>(new D(3)));
79 T1 t1 = std::move(t0);
80 assert(std::get<0>(t1) == 2);
81 assert(std::get<1>(t1) == int('a'));
82 assert(std::get<2>(t1)->id_ == 3);
83 }
84 }
85