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 // has_virtual_destructor
13 
14 #include <type_traits>
15 
16 template <class T>
test_has_virtual_destructor()17 void test_has_virtual_destructor()
18 {
19     static_assert( std::has_virtual_destructor<T>::value, "");
20     static_assert( std::has_virtual_destructor<const T>::value, "");
21     static_assert( std::has_virtual_destructor<volatile T>::value, "");
22     static_assert( std::has_virtual_destructor<const volatile T>::value, "");
23 }
24 
25 template <class T>
test_has_not_virtual_destructor()26 void test_has_not_virtual_destructor()
27 {
28     static_assert(!std::has_virtual_destructor<T>::value, "");
29     static_assert(!std::has_virtual_destructor<const T>::value, "");
30     static_assert(!std::has_virtual_destructor<volatile T>::value, "");
31     static_assert(!std::has_virtual_destructor<const volatile T>::value, "");
32 }
33 
34 class Empty
35 {
36 };
37 
38 class NotEmpty
39 {
40     virtual ~NotEmpty();
41 };
42 
43 union Union {};
44 
45 struct bit_zero
46 {
47     int :  0;
48 };
49 
50 class Abstract
51 {
52     virtual ~Abstract() = 0;
53 };
54 
55 struct A
56 {
57     ~A();
58 };
59 
main()60 int main()
61 {
62     test_has_not_virtual_destructor<void>();
63     test_has_not_virtual_destructor<A>();
64     test_has_not_virtual_destructor<int&>();
65     test_has_not_virtual_destructor<Union>();
66     test_has_not_virtual_destructor<Empty>();
67     test_has_not_virtual_destructor<int>();
68     test_has_not_virtual_destructor<double>();
69     test_has_not_virtual_destructor<int*>();
70     test_has_not_virtual_destructor<const int*>();
71     test_has_not_virtual_destructor<char[3]>();
72     test_has_not_virtual_destructor<char[]>();
73     test_has_not_virtual_destructor<bit_zero>();
74 
75     test_has_virtual_destructor<Abstract>();
76     test_has_virtual_destructor<NotEmpty>();
77 }
78