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fbd26352 | 1 | // Copyright (C) 2018-2019 Free Software Foundation, Inc. |
5fef6f2f | 2 | // |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
18 | // { dg-options "-std=gnu++17" } | |
19 | // { dg-do compile { target c++17 } } | |
20 | ||
21 | #include <optional> | |
22 | ||
23 | struct NonTrivialDtor { | |
24 | ~NonTrivialDtor() { } | |
25 | }; | |
26 | ||
27 | struct NonTrivialCopyAssign { | |
28 | NonTrivialCopyAssign& operator=(const NonTrivialCopyAssign&) { return *this; } | |
29 | NonTrivialCopyAssign& operator=(NonTrivialCopyAssign&&) = default; | |
30 | }; | |
31 | ||
32 | struct NonTrivialMoveAssign { | |
33 | NonTrivialMoveAssign& operator=(const NonTrivialMoveAssign&) = default; | |
34 | NonTrivialMoveAssign& operator=(NonTrivialMoveAssign&&) { return *this; } | |
35 | }; | |
36 | ||
37 | struct NonTrivialAssign { | |
38 | NonTrivialAssign& operator=(const NonTrivialAssign&) { return *this; } | |
39 | NonTrivialAssign& operator=(NonTrivialAssign&&) { return *this; } | |
40 | }; | |
41 | ||
42 | struct NonTrivialAll { | |
43 | ~NonTrivialAll() { } | |
44 | NonTrivialAll& operator=(const NonTrivialAll&) { return *this; } | |
45 | NonTrivialAll& operator=(NonTrivialAll&&) { return *this; } | |
46 | }; | |
47 | ||
48 | struct ConstExpr { int i = 0; }; | |
49 | ||
50 | struct Trivial { int i; }; | |
51 | ||
52 | template<typename T> | |
53 | constexpr bool check | |
54 | = std::is_nothrow_default_constructible_v<std::optional<T>>; | |
55 | ||
56 | // PR libstdc++/85642 | |
57 | static_assert(check<NonTrivialDtor>); | |
58 | static_assert(check<NonTrivialCopyAssign>); | |
59 | static_assert(check<NonTrivialMoveAssign>); | |
60 | static_assert(check<NonTrivialAssign>); | |
61 | static_assert(check<NonTrivialAll>); | |
62 | static_assert(check<ConstExpr>); | |
63 | static_assert(check<Trivial>); |