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 // is_polymorphic 13 14 #include <type_traits> 15 16 template <class T> 17 void test_is_polymorphic() 18 { 19 static_assert( std::is_polymorphic<T>::value, ""); 20 static_assert( std::is_polymorphic<const T>::value, ""); 21 static_assert( std::is_polymorphic<volatile T>::value, ""); 22 static_assert( std::is_polymorphic<const volatile T>::value, ""); 23 } 24 25 template <class T> 26 void test_is_not_polymorphic() 27 { 28 static_assert(!std::is_polymorphic<T>::value, ""); 29 static_assert(!std::is_polymorphic<const T>::value, ""); 30 static_assert(!std::is_polymorphic<volatile T>::value, ""); 31 static_assert(!std::is_polymorphic<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 #if __has_feature(cxx_attributes) 56 class Final final { 57 }; 58 #else 59 class Final { 60 }; 61 #endif 62 63 int main() 64 { 65 test_is_not_polymorphic<void>(); 66 test_is_not_polymorphic<int&>(); 67 test_is_not_polymorphic<int>(); 68 test_is_not_polymorphic<double>(); 69 test_is_not_polymorphic<int*>(); 70 test_is_not_polymorphic<const int*>(); 71 test_is_not_polymorphic<char[3]>(); 72 test_is_not_polymorphic<char[3]>(); 73 test_is_not_polymorphic<Union>(); 74 test_is_not_polymorphic<Empty>(); 75 test_is_not_polymorphic<bit_zero>(); 76 test_is_not_polymorphic<Final>(); 77 test_is_not_polymorphic<NotEmpty&>(); 78 test_is_not_polymorphic<Abstract&>(); 79 80 test_is_polymorphic<NotEmpty>(); 81 test_is_polymorphic<Abstract>(); 82 } 83
