blob: 3acbc2ab541c0a47dd5e42bbfddbdfd1ec7cc42c (
plain)
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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
// { dg-options "-std=gnu++17" }
// { dg-do compile { target c++17 } }
// Copyright (C) 2018-2019 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#include <optional>
struct X
{
~X();
};
struct Y
{
Y& operator=(const Y&) = default;
Y& operator=(Y&&);
Y(const Y&) = default;
Y(Y&&) = default;
};
struct Z
{
Z& operator=(const Z&);
Z& operator=(Z&&) = default;
Z(const Z&) = default;
};
struct Y2
{
Y2& operator=(const Y2&) = default;
Y2& operator=(Y2&&);
};
struct Z2
{
Z2& operator=(const Z2&);
Z2& operator=(Z2&&) = default;
};
static_assert(std::is_trivially_copy_assignable_v<std::optional<int>>);
static_assert(std::is_trivially_move_assignable_v<std::optional<int>>);
static_assert(!std::is_trivially_copy_assignable_v<std::optional<X>>);
static_assert(!std::is_trivially_move_assignable_v<std::optional<X>>);
static_assert(std::is_trivially_copy_assignable_v<std::optional<Y>>);
static_assert(!std::is_trivially_move_assignable_v<std::optional<Y>>);
static_assert(!std::is_trivially_copy_assignable_v<std::optional<Z>>);
static_assert(std::is_trivially_move_assignable_v<std::optional<Z>>);
static_assert(std::is_trivially_copy_assignable_v<Y2>);
static_assert(!std::is_trivially_move_assignable_v<Y2>);
static_assert(!std::is_trivially_copy_assignable_v<std::optional<Y2>>);
static_assert(!std::is_trivially_move_assignable_v<std::optional<Y2>>);
static_assert(!std::is_trivially_copy_assignable_v<Z2>);
static_assert(std::is_trivially_move_assignable_v<Z2>);
static_assert(!std::is_trivially_copy_assignable_v<std::optional<Z2>>);
static_assert(!std::is_trivially_move_assignable_v<std::optional<Z2>>);
struct S {
S(const S&&) = delete;
S& operator=(const S&) = default;
};
static_assert(std::is_trivially_copy_assignable_v<S>);
union U {
char dummy;
S s;
};
static_assert(std::is_trivially_copy_assignable_v<U>);
static_assert(!std::is_trivially_copy_assignable_v<std::optional<S>>);
static_assert(!std::is_copy_assignable_v<std::optional<S>>);
struct S2 {
S2(S2&&) = delete;
S2& operator=(const S2&) = default;
};
static_assert(std::is_trivially_move_assignable_v<S2>);
struct S3 {
S3(const S3&);
S3& operator=(const S3&) = default;
};
static_assert(std::is_trivially_copy_assignable_v<S3>);
static_assert(std::is_copy_assignable_v<S3>);
static_assert(!std::is_trivially_copy_assignable_v<std::optional<S3>>);
static_assert(std::is_copy_assignable_v<std::optional<S3>>);
struct S4 {
S4(S4&&);
S4& operator=(S4&&) = default;
};
static_assert(std::is_trivially_move_assignable_v<S4>);
static_assert(std::is_move_assignable_v<S4>);
static_assert(!std::is_trivially_move_assignable_v<std::optional<S4>>);
static_assert(std::is_move_assignable_v<std::optional<S4>>);
union U2 {
char dummy;
S2 s;
};
static_assert(std::is_trivially_move_assignable_v<U2>);
static_assert(!std::is_trivially_move_assignable_v<std::optional<S2>>);
static_assert(!std::is_move_assignable_v<std::optional<S2>>);
|
