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> 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> 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 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[3]>(); 73 test_has_not_virtual_destructor<bit_zero>(); 74 75 test_has_virtual_destructor<Abstract>(); 76 test_has_virtual_destructor<NotEmpty>(); 77 } 78
