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_nothrow_copy_assignable 13 14 #include <type_traits> 15 16 template <class T> 17 void test_has_nothrow_assign() 18 { 19 static_assert( std::is_nothrow_copy_assignable<T>::value, ""); 20 } 21 22 template <class T> 23 void test_has_not_nothrow_assign() 24 { 25 static_assert(!std::is_nothrow_copy_assignable<T>::value, ""); 26 } 27 28 class Empty 29 { 30 }; 31 32 struct NotEmpty 33 { 34 virtual ~NotEmpty(); 35 }; 36 37 union Union {}; 38 39 struct bit_zero 40 { 41 int : 0; 42 }; 43 44 struct A 45 { 46 A& operator=(const A&); 47 }; 48 49 int main() 50 { 51 test_has_nothrow_assign<int&>(); 52 test_has_nothrow_assign<Union>(); 53 test_has_nothrow_assign<Empty>(); 54 test_has_nothrow_assign<int>(); 55 test_has_nothrow_assign<double>(); 56 test_has_nothrow_assign<int*>(); 57 test_has_nothrow_assign<const int*>(); 58 test_has_nothrow_assign<NotEmpty>(); 59 test_has_nothrow_assign<bit_zero>(); 60 61 test_has_not_nothrow_assign<const int>(); 62 test_has_not_nothrow_assign<void>(); 63 test_has_not_nothrow_assign<A>(); 64 65 } 66
