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_nothrow_destructible
13
14 // Prevent warning when testing the Abstract test type.
15 #if defined(__clang__)
16 #pragma clang diagnostic ignored "-Wdelete-non-virtual-dtor"
17 #endif
18
19 #include <type_traits>
20 #include "test_macros.h"
21
22 template <class T>
test_is_nothrow_destructible()23 void test_is_nothrow_destructible()
24 {
25 static_assert( std::is_nothrow_destructible<T>::value, "");
26 static_assert( std::is_nothrow_destructible<const T>::value, "");
27 static_assert( std::is_nothrow_destructible<volatile T>::value, "");
28 static_assert( std::is_nothrow_destructible<const volatile T>::value, "");
29 #if TEST_STD_VER > 14
30 static_assert( std::is_nothrow_destructible_v<T>, "");
31 static_assert( std::is_nothrow_destructible_v<const T>, "");
32 static_assert( std::is_nothrow_destructible_v<volatile T>, "");
33 static_assert( std::is_nothrow_destructible_v<const volatile T>, "");
34 #endif
35 }
36
37 template <class T>
test_is_not_nothrow_destructible()38 void test_is_not_nothrow_destructible()
39 {
40 static_assert(!std::is_nothrow_destructible<T>::value, "");
41 static_assert(!std::is_nothrow_destructible<const T>::value, "");
42 static_assert(!std::is_nothrow_destructible<volatile T>::value, "");
43 static_assert(!std::is_nothrow_destructible<const volatile T>::value, "");
44 #if TEST_STD_VER > 14
45 static_assert(!std::is_nothrow_destructible_v<T>, "");
46 static_assert(!std::is_nothrow_destructible_v<const T>, "");
47 static_assert(!std::is_nothrow_destructible_v<volatile T>, "");
48 static_assert(!std::is_nothrow_destructible_v<const volatile T>, "");
49 #endif
50 }
51
52
~PublicDestructorPublicDestructor53 struct PublicDestructor { public: ~PublicDestructor() {}};
~ProtectedDestructorProtectedDestructor54 struct ProtectedDestructor { protected: ~ProtectedDestructor() {}};
~PrivateDestructorPrivateDestructor55 struct PrivateDestructor { private: ~PrivateDestructor() {}};
56
~VirtualPublicDestructorVirtualPublicDestructor57 struct VirtualPublicDestructor { public: virtual ~VirtualPublicDestructor() {}};
~VirtualProtectedDestructorVirtualProtectedDestructor58 struct VirtualProtectedDestructor { protected: virtual ~VirtualProtectedDestructor() {}};
~VirtualPrivateDestructorVirtualPrivateDestructor59 struct VirtualPrivateDestructor { private: virtual ~VirtualPrivateDestructor() {}};
60
61 struct PurePublicDestructor { public: virtual ~PurePublicDestructor() = 0; };
62 struct PureProtectedDestructor { protected: virtual ~PureProtectedDestructor() = 0; };
63 struct PurePrivateDestructor { private: virtual ~PurePrivateDestructor() = 0; };
64
65 class Empty
66 {
67 };
68
69
70 union Union {};
71
72 struct bit_zero
73 {
74 int : 0;
75 };
76
77 class Abstract
78 {
79 virtual void foo() = 0;
80 };
81
82
main()83 int main()
84 {
85 test_is_not_nothrow_destructible<void>();
86 test_is_not_nothrow_destructible<char[]>();
87 test_is_not_nothrow_destructible<char[][3]>();
88
89 test_is_nothrow_destructible<int&>();
90 test_is_nothrow_destructible<int>();
91 test_is_nothrow_destructible<double>();
92 test_is_nothrow_destructible<int*>();
93 test_is_nothrow_destructible<const int*>();
94 test_is_nothrow_destructible<char[3]>();
95
96 #if TEST_STD_VER >= 11
97 // requires noexcept. These are all destructible.
98 test_is_nothrow_destructible<PublicDestructor>();
99 test_is_nothrow_destructible<VirtualPublicDestructor>();
100 test_is_nothrow_destructible<PurePublicDestructor>();
101 test_is_nothrow_destructible<bit_zero>();
102 test_is_nothrow_destructible<Abstract>();
103 test_is_nothrow_destructible<Empty>();
104 test_is_nothrow_destructible<Union>();
105
106 // requires access control
107 test_is_not_nothrow_destructible<ProtectedDestructor>();
108 test_is_not_nothrow_destructible<PrivateDestructor>();
109 test_is_not_nothrow_destructible<VirtualProtectedDestructor>();
110 test_is_not_nothrow_destructible<VirtualPrivateDestructor>();
111 test_is_not_nothrow_destructible<PureProtectedDestructor>();
112 test_is_not_nothrow_destructible<PurePrivateDestructor>();
113 #endif
114 }
115