1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// type_traits
// is_trivially_assignable
#include <type_traits>
#include "test_macros.h"
template <class T, class U>
void test_is_trivially_assignable()
{
static_assert(( std::is_trivially_assignable<T, U>::value), "");
#if TEST_STD_VER > 14
static_assert(( std::is_trivially_assignable_v<T, U>), "");
#endif
}
template <class T, class U>
void test_is_not_trivially_assignable()
{
static_assert((!std::is_trivially_assignable<T, U>::value), "");
#if TEST_STD_VER > 14
static_assert((!std::is_trivially_assignable_v<T, U>), "");
#endif
}
struct A
{
};
struct B
{
void operator=(A);
};
struct C
{
void operator=(C&); // not const
};
int main(int, char**)
{
test_is_trivially_assignable<int&, int&> ();
test_is_trivially_assignable<int&, int> ();
test_is_trivially_assignable<int&, double> ();
test_is_not_trivially_assignable<int, int&> ();
test_is_not_trivially_assignable<int, int> ();
test_is_not_trivially_assignable<B, A> ();
test_is_not_trivially_assignable<A, B> ();
test_is_not_trivially_assignable<C&, C&> ();
return 0;
}