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 // template <class T, class... Args>
13 // struct is_nothrow_constructible;
14
15 #include <type_traits>
16
17 template <class T>
test_is_nothrow_constructible()18 void test_is_nothrow_constructible()
19 {
20 static_assert(( std::is_nothrow_constructible<T>::value), "");
21 }
22
23 template <class T, class A0>
test_is_nothrow_constructible()24 void test_is_nothrow_constructible()
25 {
26 static_assert(( std::is_nothrow_constructible<T, A0>::value), "");
27 }
28
29 template <class T>
test_is_not_nothrow_constructible()30 void test_is_not_nothrow_constructible()
31 {
32 static_assert((!std::is_nothrow_constructible<T>::value), "");
33 }
34
35 template <class T, class A0>
test_is_not_nothrow_constructible()36 void test_is_not_nothrow_constructible()
37 {
38 static_assert((!std::is_nothrow_constructible<T, A0>::value), "");
39 }
40
41 template <class T, class A0, class A1>
test_is_not_nothrow_constructible()42 void test_is_not_nothrow_constructible()
43 {
44 static_assert((!std::is_nothrow_constructible<T, A0, A1>::value), "");
45 }
46
47 class Empty
48 {
49 };
50
51 class NotEmpty
52 {
53 virtual ~NotEmpty();
54 };
55
56 union Union {};
57
58 struct bit_zero
59 {
60 int : 0;
61 };
62
63 class Abstract
64 {
65 virtual ~Abstract() = 0;
66 };
67
68 struct A
69 {
70 A(const A&);
71 };
72
73 struct C
74 {
75 C(C&); // not const
76 void operator=(C&); // not const
77 };
78
79 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
80 struct Tuple {
TupleTuple81 Tuple(Empty&&) noexcept {}
82 };
83 #endif
84
main()85 int main()
86 {
87 test_is_nothrow_constructible<int> ();
88 test_is_nothrow_constructible<int, const int&> ();
89 test_is_nothrow_constructible<Empty> ();
90 test_is_nothrow_constructible<Empty, const Empty&> ();
91 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
92 test_is_nothrow_constructible<Tuple &&, Empty> (); // See bug #19616.
93 #endif
94
95 test_is_not_nothrow_constructible<A, int> ();
96 test_is_not_nothrow_constructible<A, int, double> ();
97 test_is_not_nothrow_constructible<A> ();
98 test_is_not_nothrow_constructible<C> ();
99 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
100 static_assert(!std::is_constructible<Tuple&, Empty>::value, "");
101 test_is_not_nothrow_constructible<Tuple &, Empty> (); // See bug #19616.
102 #endif
103 }
104