1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // type_traits
10
11 // is_trivially_destructible
12
13 // Prevent warning when testing the Abstract test type.
14 #if defined(__clang__)
15 #pragma clang diagnostic ignored "-Wdelete-non-virtual-dtor"
16 #endif
17
18 #include <type_traits>
19 #include "test_macros.h"
20
21 template <class T>
test_is_trivially_destructible()22 void test_is_trivially_destructible()
23 {
24 static_assert( std::is_trivially_destructible<T>::value, "");
25 static_assert( std::is_trivially_destructible<const T>::value, "");
26 static_assert( std::is_trivially_destructible<volatile T>::value, "");
27 static_assert( std::is_trivially_destructible<const volatile T>::value, "");
28 #if TEST_STD_VER > 14
29 static_assert( std::is_trivially_destructible_v<T>, "");
30 static_assert( std::is_trivially_destructible_v<const T>, "");
31 static_assert( std::is_trivially_destructible_v<volatile T>, "");
32 static_assert( std::is_trivially_destructible_v<const volatile T>, "");
33 #endif
34 }
35
36 template <class T>
test_is_not_trivially_destructible()37 void test_is_not_trivially_destructible()
38 {
39 static_assert(!std::is_trivially_destructible<T>::value, "");
40 static_assert(!std::is_trivially_destructible<const T>::value, "");
41 static_assert(!std::is_trivially_destructible<volatile T>::value, "");
42 static_assert(!std::is_trivially_destructible<const volatile T>::value, "");
43 #if TEST_STD_VER > 14
44 static_assert(!std::is_trivially_destructible_v<T>, "");
45 static_assert(!std::is_trivially_destructible_v<const T>, "");
46 static_assert(!std::is_trivially_destructible_v<volatile T>, "");
47 static_assert(!std::is_trivially_destructible_v<const volatile T>, "");
48 #endif
49 }
50
~PublicDestructorPublicDestructor51 struct PublicDestructor { public: ~PublicDestructor() {}};
~ProtectedDestructorProtectedDestructor52 struct ProtectedDestructor { protected: ~ProtectedDestructor() {}};
~PrivateDestructorPrivateDestructor53 struct PrivateDestructor { private: ~PrivateDestructor() {}};
54
~VirtualPublicDestructorVirtualPublicDestructor55 struct VirtualPublicDestructor { public: virtual ~VirtualPublicDestructor() {}};
~VirtualProtectedDestructorVirtualProtectedDestructor56 struct VirtualProtectedDestructor { protected: virtual ~VirtualProtectedDestructor() {}};
~VirtualPrivateDestructorVirtualPrivateDestructor57 struct VirtualPrivateDestructor { private: virtual ~VirtualPrivateDestructor() {}};
58
59 struct PurePublicDestructor { public: virtual ~PurePublicDestructor() = 0; };
60 struct PureProtectedDestructor { protected: virtual ~PureProtectedDestructor() = 0; };
61 struct PurePrivateDestructor { private: virtual ~PurePrivateDestructor() = 0; };
62
63
64 class Empty
65 {
66 };
67
68 union Union {};
69
70 struct bit_zero
71 {
72 int : 0;
73 };
74
75 class Abstract
76 {
77 virtual void foo() = 0;
78 };
79
80 class AbstractDestructor
81 {
82 virtual ~AbstractDestructor() = 0;
83 };
84
85 struct A
86 {
87 ~A();
88 };
89
main(int,char **)90 int main(int, char**)
91 {
92 test_is_not_trivially_destructible<void>();
93 test_is_not_trivially_destructible<A>();
94 test_is_not_trivially_destructible<char[]>();
95 test_is_not_trivially_destructible<VirtualPublicDestructor>();
96 test_is_not_trivially_destructible<PurePublicDestructor>();
97
98 test_is_trivially_destructible<Abstract>();
99 test_is_trivially_destructible<Union>();
100 test_is_trivially_destructible<Empty>();
101 test_is_trivially_destructible<int&>();
102 test_is_trivially_destructible<int>();
103 test_is_trivially_destructible<double>();
104 test_is_trivially_destructible<int*>();
105 test_is_trivially_destructible<const int*>();
106 test_is_trivially_destructible<char[3]>();
107 test_is_trivially_destructible<bit_zero>();
108
109 #if TEST_STD_VER >= 11
110 // requires access control sfinae
111 test_is_not_trivially_destructible<ProtectedDestructor>();
112 test_is_not_trivially_destructible<PrivateDestructor>();
113 test_is_not_trivially_destructible<VirtualProtectedDestructor>();
114 test_is_not_trivially_destructible<VirtualPrivateDestructor>();
115 test_is_not_trivially_destructible<PureProtectedDestructor>();
116 test_is_not_trivially_destructible<PurePrivateDestructor>();
117 #endif
118
119 #if TEST_HAS_BUILTIN_IDENTIFIER(_Atomic)
120 test_is_trivially_destructible<_Atomic int>();
121 test_is_trivially_destructible<_Atomic float>();
122 test_is_trivially_destructible<_Atomic int*>();
123 #endif
124
125 return 0;
126 }
127