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_copy_constructible 13 14 #include <type_traits> 15 #include "test_macros.h" 16 17 template <class T> 18 void test_is_copy_constructible() 19 { 20 static_assert( std::is_copy_constructible<T>::value, ""); 21 #if TEST_STD_VER > 14 22 static_assert( std::is_copy_constructible_v<T>, ""); 23 #endif 24 } 25 26 template <class T> 27 void test_is_not_copy_constructible() 28 { 29 static_assert(!std::is_copy_constructible<T>::value, ""); 30 #if TEST_STD_VER > 14 31 static_assert(!std::is_copy_constructible_v<T>, ""); 32 #endif 33 } 34 35 class Empty 36 { 37 }; 38 39 class NotEmpty 40 { 41 public: 42 virtual ~NotEmpty(); 43 }; 44 45 union Union {}; 46 47 struct bit_zero 48 { 49 int : 0; 50 }; 51 52 class Abstract 53 { 54 public: 55 virtual ~Abstract() = 0; 56 }; 57 58 struct A 59 { 60 A(const A&); 61 }; 62 63 class B 64 { 65 B(const B&); 66 }; 67 68 struct C 69 { 70 C(C&); // not const 71 void operator=(C&); // not const 72 }; 73 74 int main() 75 { 76 test_is_copy_constructible<A>(); 77 test_is_copy_constructible<int&>(); 78 test_is_copy_constructible<Union>(); 79 test_is_copy_constructible<Empty>(); 80 test_is_copy_constructible<int>(); 81 test_is_copy_constructible<double>(); 82 test_is_copy_constructible<int*>(); 83 test_is_copy_constructible<const int*>(); 84 test_is_copy_constructible<NotEmpty>(); 85 test_is_copy_constructible<bit_zero>(); 86 87 test_is_not_copy_constructible<char[3]>(); 88 test_is_not_copy_constructible<char[]>(); 89 test_is_not_copy_constructible<void>(); 90 test_is_not_copy_constructible<Abstract>(); 91 test_is_not_copy_constructible<C>(); 92 #if TEST_STD_VER >= 11 93 test_is_not_copy_constructible<B>(); 94 #endif 95 } 96
