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
17template <class T>
18void 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
26template <class T>
27void 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
35class Empty
36{
37};
38
39struct NotEmpty
40{
41    virtual ~NotEmpty();
42};
43
44union Union {};
45
46struct bit_zero
47{
48    int :  0;
49};
50
51struct A
52{
53    A& operator=(const A&);
54};
55
56int 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