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99dee823 | 1 | // Copyright (C) 2020-2021 Free Software Foundation, Inc. |
8992cd18 JW |
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-do compile { target c++17 } } | |
19 | ||
20 | #include <optional> | |
21 | ||
22 | template<bool B> | |
23 | struct X | |
24 | { | |
25 | X() noexcept(B); | |
26 | X(const X&) noexcept(B); | |
27 | ||
28 | X(int) noexcept(B); | |
29 | X(std::initializer_list<int>, int) noexcept(B); | |
30 | ||
31 | X(const X<!B>&) noexcept(B); | |
32 | ||
33 | X& operator=(const X&) noexcept(false); | |
34 | }; | |
35 | ||
36 | using std::is_nothrow_constructible_v; | |
37 | using std::in_place_t; | |
38 | ||
39 | using Xyes = X<true>; | |
40 | using Xno = X<false>; | |
41 | using Oyes = std::optional<Xyes>; | |
42 | using Ono = std::optional<Xno>; | |
43 | ||
44 | static_assert( is_nothrow_constructible_v<Oyes> ); | |
45 | static_assert( is_nothrow_constructible_v<Oyes, std::nullopt_t> ); | |
46 | static_assert( is_nothrow_constructible_v<Oyes, const Xyes&> ); | |
47 | static_assert( is_nothrow_constructible_v<Oyes, Xyes> ); | |
48 | static_assert( is_nothrow_constructible_v<Oyes, in_place_t, short> ); | |
49 | static_assert( is_nothrow_constructible_v<Oyes, in_place_t, | |
50 | std::initializer_list<int>, | |
51 | long> ); | |
52 | static_assert( is_nothrow_constructible_v<Oyes, const Ono&> ); | |
53 | static_assert( is_nothrow_constructible_v<Oyes, Ono> ); | |
54 | ||
55 | static_assert( is_nothrow_constructible_v<Ono> ); | |
56 | static_assert( is_nothrow_constructible_v<Ono, std::nullopt_t> ); | |
57 | static_assert( ! is_nothrow_constructible_v<Ono, const Xno&> ); | |
58 | static_assert( ! is_nothrow_constructible_v<Ono, Xno> ); | |
59 | static_assert( ! is_nothrow_constructible_v<Ono, in_place_t, short> ); | |
60 | static_assert( ! is_nothrow_constructible_v<Ono, in_place_t, | |
61 | std::initializer_list<int>, | |
62 | long> ); | |
63 | static_assert( ! is_nothrow_constructible_v<Ono, const Xyes&> ); | |
64 | static_assert( ! is_nothrow_constructible_v<Ono, Xyes> ); |