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#include <type_traits>
14#include "test_macros.h"
15
16template <class T>
17void test_is_trivially_destructible()
18{
19 static_assert( std::is_trivially_destructible<T>::value, "");
20 static_assert( std::is_trivially_destructible<const T>::value, "");
21 static_assert( std::is_trivially_destructible<volatile T>::value, "");
22 static_assert( std::is_trivially_destructible<const volatile T>::value, "");
23#if TEST_STD_VER > 14
24 static_assert( std::is_trivially_destructible_v<T>, "");
25 static_assert( std::is_trivially_destructible_v<const T>, "");
26 static_assert( std::is_trivially_destructible_v<volatile T>, "");
27 static_assert( std::is_trivially_destructible_v<const volatile T>, "");
28#endif
29}
30
31template <class T>
32void test_is_not_trivially_destructible()
33{
34 static_assert(!std::is_trivially_destructible<T>::value, "");
35 static_assert(!std::is_trivially_destructible<const T>::value, "");
36 static_assert(!std::is_trivially_destructible<volatile T>::value, "");
37 static_assert(!std::is_trivially_destructible<const volatile T>::value, "");
38#if TEST_STD_VER > 14
39 static_assert(!std::is_trivially_destructible_v<T>, "");
40 static_assert(!std::is_trivially_destructible_v<const T>, "");
41 static_assert(!std::is_trivially_destructible_v<volatile T>, "");
42 static_assert(!std::is_trivially_destructible_v<const volatile T>, "");
43#endif
44}
45
46struct PublicDestructor { public: ~PublicDestructor() {}};
47struct ProtectedDestructor { protected: ~ProtectedDestructor() {}};
48struct PrivateDestructor { private: ~PrivateDestructor() {}};
49
50struct VirtualPublicDestructor { public: virtual ~VirtualPublicDestructor() {}};
51struct VirtualProtectedDestructor { protected: virtual ~VirtualProtectedDestructor() {}};
52struct VirtualPrivateDestructor { private: virtual ~VirtualPrivateDestructor() {}};
53
54struct PurePublicDestructor { public: virtual ~PurePublicDestructor() = 0; };
55struct PureProtectedDestructor { protected: virtual ~PureProtectedDestructor() = 0; };
56struct PurePrivateDestructor { private: virtual ~PurePrivateDestructor() = 0; };
57
58
59class Empty
60{
61};
62
63union Union {};
64
65struct bit_zero
66{
67 int : 0;
68};
69
70class Abstract
71{
72 virtual void foo() = 0;
73};
74
75class AbstractDestructor
76{
77 virtual ~AbstractDestructor() = 0;
78};
79
80struct A
81{
82 ~A();
83};
84
85int main(int, char**)
86{
87 test_is_not_trivially_destructible<void>();
88 test_is_not_trivially_destructible<A>();
89 test_is_not_trivially_destructible<char[]>();
90 test_is_not_trivially_destructible<VirtualPublicDestructor>();
91 test_is_not_trivially_destructible<PurePublicDestructor>();
92
93 test_is_trivially_destructible<Abstract>();
94 test_is_trivially_destructible<Union>();
95 test_is_trivially_destructible<Empty>();
96 test_is_trivially_destructible<int&>();
97 test_is_trivially_destructible<int>();
98 test_is_trivially_destructible<double>();
99 test_is_trivially_destructible<int*>();
100 test_is_trivially_destructible<const int*>();
101 test_is_trivially_destructible<char[3]>();
102 test_is_trivially_destructible<bit_zero>();
103
104#if TEST_STD_VER >= 11
105 // requires access control sfinae
106 test_is_not_trivially_destructible<ProtectedDestructor>();
107 test_is_not_trivially_destructible<PrivateDestructor>();
108 test_is_not_trivially_destructible<VirtualProtectedDestructor>();
109 test_is_not_trivially_destructible<VirtualPrivateDestructor>();
110 test_is_not_trivially_destructible<PureProtectedDestructor>();
111 test_is_not_trivially_destructible<PurePrivateDestructor>();
112#endif
113
114#if TEST_HAS_BUILTIN_IDENTIFIER(_Atomic)
115 test_is_trivially_destructible<_Atomic int>();
116 test_is_trivially_destructible<_Atomic float>();
117 test_is_trivially_destructible<_Atomic int*>();
118#endif
119
120 return 0;
121}
122

source code of libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_destructible.pass.cpp