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 Explicit {
24 int value;
ExplicitExplicit25 explicit Explicit(int x) : value(x) {}
26 };
27
28 struct Implicit {
29 int value;
ImplicitImplicit30 Implicit(int x) : value(x) {}
31 };
32
33 struct B
34 {
35 int id_;
36
BB37 explicit B(int i) : id_(i) {}
38
~BB39 virtual ~B() {}
40 };
41
42 struct D
43 : B
44 {
DD45 explicit D(int i) : B(i) {}
46 };
47
main()48 int main()
49 {
50 {
51 typedef std::tuple<long> T0;
52 typedef std::tuple<long long> T1;
53 T0 t0(2);
54 T1 t1 = std::move(t0);
55 assert(std::get<0>(t1) == 2);
56 }
57 {
58 typedef std::tuple<long, char> T0;
59 typedef std::tuple<long long, int> T1;
60 T0 t0(2, 'a');
61 T1 t1 = std::move(t0);
62 assert(std::get<0>(t1) == 2);
63 assert(std::get<1>(t1) == int('a'));
64 }
65 {
66 typedef std::tuple<long, char, D> T0;
67 typedef std::tuple<long long, int, B> T1;
68 T0 t0(2, 'a', D(3));
69 T1 t1 = std::move(t0);
70 assert(std::get<0>(t1) == 2);
71 assert(std::get<1>(t1) == int('a'));
72 assert(std::get<2>(t1).id_ == 3);
73 }
74 {
75 D d(3);
76 typedef std::tuple<long, char, D&> T0;
77 typedef std::tuple<long long, int, B&> T1;
78 T0 t0(2, 'a', d);
79 T1 t1 = std::move(t0);
80 d.id_ = 2;
81 assert(std::get<0>(t1) == 2);
82 assert(std::get<1>(t1) == int('a'));
83 assert(std::get<2>(t1).id_ == 2);
84 }
85 {
86 typedef std::tuple<long, char, std::unique_ptr<D>> T0;
87 typedef std::tuple<long long, int, std::unique_ptr<B>> T1;
88 T0 t0(2, 'a', std::unique_ptr<D>(new D(3)));
89 T1 t1 = std::move(t0);
90 assert(std::get<0>(t1) == 2);
91 assert(std::get<1>(t1) == int('a'));
92 assert(std::get<2>(t1)->id_ == 3);
93 }
94 {
95 std::tuple<int> t1(42);
96 std::tuple<Explicit> t2(std::move(t1));
97 assert(std::get<0>(t2).value == 42);
98 }
99 {
100 std::tuple<int> t1(42);
101 std::tuple<Implicit> t2 = std::move(t1);
102 assert(std::get<0>(t2).value == 42);
103 }
104 }
105