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 // type_traits
11 
12 // is_trivially_move_constructible
13 
14 #include <type_traits>
15 
16 template <class T>
17 void test_is_trivially_move_constructible()
18 {
19     static_assert( std::is_trivially_move_constructible<T>::value, "");
20 }
21 
22 template <class T>
23 void test_has_not_trivial_move_constructor()
24 {
25     static_assert(!std::is_trivially_move_constructible<T>::value, "");
26 }
27 
28 class Empty
29 {
30 };
31 
32 class NotEmpty
33 {
34 public:
35     virtual ~NotEmpty();
36 };
37 
38 union Union {};
39 
40 struct bit_zero
41 {
42     int :  0;
43 };
44 
45 class Abstract
46 {
47 public:
48     virtual ~Abstract() = 0;
49 };
50 
51 struct A
52 {
53     A(const A&);
54 };
55 
56 #if __has_feature(cxx_defaulted_functions)
57 
58 struct MoveOnly1
59 {
60     MoveOnly1(MoveOnly1&&);
61 };
62 
63 struct MoveOnly2
64 {
65     MoveOnly2(MoveOnly2&&) = default;
66 };
67 
68 #endif
69 
70 int main()
71 {
72     test_has_not_trivial_move_constructor<void>();
73     test_has_not_trivial_move_constructor<A>();
74     test_has_not_trivial_move_constructor<Abstract>();
75     test_has_not_trivial_move_constructor<NotEmpty>();
76 
77     test_is_trivially_move_constructible<Union>();
78     test_is_trivially_move_constructible<Empty>();
79     test_is_trivially_move_constructible<int>();
80     test_is_trivially_move_constructible<double>();
81     test_is_trivially_move_constructible<int*>();
82     test_is_trivially_move_constructible<const int*>();
83     test_is_trivially_move_constructible<bit_zero>();
84 
85 #if __has_feature(cxx_defaulted_functions)
86     static_assert(!std::is_trivially_move_constructible<MoveOnly1>::value, "");
87     static_assert( std::is_trivially_move_constructible<MoveOnly2>::value, "");
88 #endif
89 }
90