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 #include "test_macros.h" 17 18 template <class T> 19 void test_has_virtual_destructor() 20 { 21 static_assert( std::has_virtual_destructor<T>::value, ""); 22 static_assert( std::has_virtual_destructor<const T>::value, ""); 23 static_assert( std::has_virtual_destructor<volatile T>::value, ""); 24 static_assert( std::has_virtual_destructor<const volatile T>::value, ""); 25 #if TEST_STD_VER > 14 26 static_assert( std::has_virtual_destructor_v<T>, ""); 27 static_assert( std::has_virtual_destructor_v<const T>, ""); 28 static_assert( std::has_virtual_destructor_v<volatile T>, ""); 29 static_assert( std::has_virtual_destructor_v<const volatile T>, ""); 30 #endif 31 } 32 33 template <class T> 34 void test_has_not_virtual_destructor() 35 { 36 static_assert(!std::has_virtual_destructor<T>::value, ""); 37 static_assert(!std::has_virtual_destructor<const T>::value, ""); 38 static_assert(!std::has_virtual_destructor<volatile T>::value, ""); 39 static_assert(!std::has_virtual_destructor<const volatile T>::value, ""); 40 #if TEST_STD_VER > 14 41 static_assert(!std::has_virtual_destructor_v<T>, ""); 42 static_assert(!std::has_virtual_destructor_v<const T>, ""); 43 static_assert(!std::has_virtual_destructor_v<volatile T>, ""); 44 static_assert(!std::has_virtual_destructor_v<const volatile T>, ""); 45 #endif 46 } 47 48 class Empty 49 { 50 }; 51 52 class NotEmpty 53 { 54 virtual ~NotEmpty(); 55 }; 56 57 union Union {}; 58 59 struct bit_zero 60 { 61 int : 0; 62 }; 63 64 class Abstract 65 { 66 virtual ~Abstract() = 0; 67 }; 68 69 struct A 70 { 71 ~A(); 72 }; 73 74 int main() 75 { 76 test_has_not_virtual_destructor<void>(); 77 test_has_not_virtual_destructor<A>(); 78 test_has_not_virtual_destructor<int&>(); 79 test_has_not_virtual_destructor<Union>(); 80 test_has_not_virtual_destructor<Empty>(); 81 test_has_not_virtual_destructor<int>(); 82 test_has_not_virtual_destructor<double>(); 83 test_has_not_virtual_destructor<int*>(); 84 test_has_not_virtual_destructor<const int*>(); 85 test_has_not_virtual_destructor<char[3]>(); 86 test_has_not_virtual_destructor<char[]>(); 87 test_has_not_virtual_destructor<bit_zero>(); 88 89 test_has_virtual_destructor<Abstract>(); 90 test_has_virtual_destructor<NotEmpty>(); 91 } 92
