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038c0afa JW |
1 | // { dg-do compile { target c++20 } } |
2 | // Disable PCH because <bits/stdc++.h> includes <stdatomic.h> which declares | |
3 | // memory_order in the global namespace. | |
4 | // { dg-add-options no_pch } | |
94014ee9 | 5 | |
83ffe9cd | 6 | // Copyright (C) 2019-2023 Free Software Foundation, Inc. |
94014ee9 ESR |
7 | // |
8 | // This file is part of the GNU ISO C++ Library. This library is free | |
9 | // software; you can redistribute it and/or modify it under the | |
10 | // terms of the GNU General Public License as published by the | |
11 | // Free Software Foundation; either version 3, or (at your option) | |
12 | // any later version. | |
13 | // | |
14 | // This library is distributed in the hope that it will be useful, | |
15 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | // GNU General Public License for more details. | |
18 | // | |
19 | // You should have received a copy of the GNU General Public License along | |
20 | // with this library; see the file COPYING3. If not see | |
21 | // <http://www.gnu.org/licenses/>. | |
22 | ||
23 | #include <atomic> | |
24 | ||
25 | void test01() | |
26 | { | |
27 | // Not global scoped, only namespace std. | |
038c0afa | 28 | using ::memory_order; // { dg-error "has not been declared" } |
94014ee9 ESR |
29 | constexpr auto relaxed = memory_order::relaxed; // { dg-error "has not been declared" } |
30 | constexpr auto consume = memory_order::consume; // { dg-error "has not been declared" } | |
31 | constexpr auto acquire = memory_order::acquire; // { dg-error "has not been declared" } | |
32 | constexpr auto release = memory_order::release; // { dg-error "has not been declared" } | |
33 | constexpr auto acq_rel = memory_order::acq_rel; // { dg-error "has not been declared" } | |
34 | constexpr auto seq_cst = memory_order::seq_cst; // { dg-error "has not been declared" } | |
35 | } |