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_nothrow_move_assign 13 14 #include <type_traits> 15 #include "test_macros.h" 16 17 template <class T> 18 void test_has_nothrow_assign() 19 { 20 static_assert( std::is_nothrow_move_assignable<T>::value, ""); 21 #if TEST_STD_VER > 14 22 static_assert( std::is_nothrow_move_assignable_v<T>, ""); 23 #endif 24 } 25 26 template <class T> 27 void test_has_not_nothrow_assign() 28 { 29 static_assert(!std::is_nothrow_move_assignable<T>::value, ""); 30 #if TEST_STD_VER > 14 31 static_assert(!std::is_nothrow_move_assignable_v<T>, ""); 32 #endif 33 } 34 35 class Empty 36 { 37 }; 38 39 struct NotEmpty 40 { 41 virtual ~NotEmpty(); 42 }; 43 44 union Union {}; 45 46 struct bit_zero 47 { 48 int : 0; 49 }; 50 51 struct A 52 { 53 A& operator=(const A&); 54 }; 55 56 int main() 57 { 58 test_has_nothrow_assign<int&>(); 59 test_has_nothrow_assign<Union>(); 60 test_has_nothrow_assign<Empty>(); 61 test_has_nothrow_assign<int>(); 62 test_has_nothrow_assign<double>(); 63 test_has_nothrow_assign<int*>(); 64 test_has_nothrow_assign<const int*>(); 65 test_has_nothrow_assign<NotEmpty>(); 66 test_has_nothrow_assign<bit_zero>(); 67 68 test_has_not_nothrow_assign<void>(); 69 test_has_not_nothrow_assign<A>(); 70 } 71
