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83ffe9cd | 1 | // Copyright (C) 2015-2023 Free Software Foundation, Inc. |
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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 | ||
6458742a | 18 | // { dg-do run { target c++17 } } |
49ba2588 | 19 | // { dg-require-cstdint "" } |
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20 | |
21 | #include <any> | |
22 | #include <cstdint> | |
23 | #include <testsuite_hooks.h> | |
24 | ||
25 | // Alignment requiremnts of this type prevent it being stored in 'any' | |
26 | struct alignas(2 * alignof(void*)) X { }; | |
27 | ||
28 | bool | |
29 | stored_internally(void* obj, const std::any& a) | |
30 | { | |
31 | std::uintptr_t a_addr = reinterpret_cast<std::uintptr_t>(&a); | |
32 | std::uintptr_t a_end = a_addr + sizeof(a); | |
33 | std::uintptr_t obj_addr = reinterpret_cast<std::uintptr_t>(obj); | |
34 | return (a_addr <= obj_addr) && (obj_addr < a_end); | |
35 | } | |
36 | ||
37 | void | |
38 | test01() | |
39 | { | |
40 | std::any a = X{}; | |
41 | X& x = std::any_cast<X&>(a); | |
42 | VERIFY( !stored_internally(&x, a) ); | |
43 | ||
44 | a = 'X'; | |
45 | char& c = std::any_cast<char&>(a); | |
46 | VERIFY( stored_internally(&c, a) ); | |
47 | } | |
48 | ||
49 | int | |
50 | main() | |
51 | { | |
52 | test01(); | |
53 | } |