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83ffe9cd | 1 | // Copyright (C) 2020-2023 Free Software Foundation, Inc. |
9158a4d2 PP |
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++2a" } | |
19 | // { dg-do compile { target c++2a } } | |
7cc9022f AA |
20 | // FIXME [!HOSTED]: avoidable std::allocator usage |
21 | // { dg-require-effective-target hosted } | |
9158a4d2 PP |
22 | |
23 | #include <memory> | |
24 | ||
25 | constexpr bool | |
26 | test01() | |
27 | { | |
28 | const int sz{1}; | |
29 | int* data{std::allocator<int>{}.allocate(sz)}; | |
30 | static_assert(noexcept(std::ranges::construct_at(data, 42))); | |
31 | std::ranges::construct_at(data, 42); | |
32 | if (*data != 42) | |
33 | return false; | |
34 | std::ranges::destroy_at(data); | |
35 | std::allocator<int>{}.deallocate(data, sz); | |
36 | return true; | |
37 | } | |
38 | ||
39 | static_assert(test01()); | |
40 | ||
41 | struct S { S(); }; | |
42 | S* p; | |
43 | static_assert(!noexcept(std::ranges::construct_at(p))); |