is_trivially_copy_assignable.pass.cpp revision 1468b668aa964beb1220e9b36162b092fb54952b
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_trivially_copy_assignable 13 14#include <type_traits> 15 16template <class T, bool Result> 17void test_has_trivial_assign() 18{ 19 static_assert(std::is_trivially_copy_assignable<T>::value == Result, ""); 20} 21 22class Empty 23{ 24}; 25 26class NotEmpty 27{ 28 virtual ~NotEmpty(); 29}; 30 31union Union {}; 32 33struct bit_zero 34{ 35 int : 0; 36}; 37 38class Abstract 39{ 40 virtual ~Abstract() = 0; 41}; 42 43struct A 44{ 45 A& operator=(const A&); 46}; 47 48int main() 49{ 50 test_has_trivial_assign<void, false>(); 51 test_has_trivial_assign<A, false>(); 52 test_has_trivial_assign<int&, true>(); 53 test_has_trivial_assign<NotEmpty, false>(); 54 test_has_trivial_assign<Abstract, false>(); 55 test_has_trivial_assign<const Empty, false>(); 56 57 test_has_trivial_assign<Union, true>(); 58 test_has_trivial_assign<Empty, true>(); 59 test_has_trivial_assign<int, true>(); 60 test_has_trivial_assign<double, true>(); 61 test_has_trivial_assign<int*, true>(); 62 test_has_trivial_assign<const int*, true>(); 63 test_has_trivial_assign<bit_zero, true>(); 64} 65