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1 | // { dg-do compile { target c++11 } } | |
2 | // | |
3 | // Copyright (C) 2011-2024 Free Software Foundation, Inc. | |
4 | // | |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
8 | // Free Software Foundation; either version 3, or (at your option) | |
9 | // any later version. | |
10 | // | |
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | // | |
16 | // You should have received a copy of the GNU General Public License along | |
17 | // with this library; see the file COPYING3. If not see | |
18 | // <http://www.gnu.org/licenses/>. | |
19 | ||
20 | // NB: Don't include any other headers in this file. | |
21 | // LWG 2212 requires <array> to define tuple_size<cv T> specializations. | |
22 | #include <array> | |
23 | ||
24 | void | |
25 | test01() | |
26 | { | |
27 | using std::array; | |
28 | using std::tuple_size; | |
29 | using std::size_t; | |
30 | // This relies on the fact that <utility> includes <type_traits>: | |
31 | using std::is_same; | |
32 | ||
33 | { | |
34 | const size_t len = 5; | |
35 | typedef array<int, len> array_type; | |
36 | static_assert(tuple_size<array_type>::value == 5, ""); | |
37 | static_assert(tuple_size<const array_type>::value == 5, ""); | |
38 | static_assert(tuple_size<volatile array_type>::value == 5, ""); | |
39 | static_assert(tuple_size<const volatile array_type>::value == 5, ""); | |
40 | } | |
41 | ||
42 | { | |
43 | const size_t len = 0; | |
44 | typedef array<float, len> array_type; | |
45 | static_assert(tuple_size<array_type>::value == 0, ""); | |
46 | static_assert(tuple_size<const array_type>::value == 0, ""); | |
47 | static_assert(tuple_size<volatile array_type>::value == 0, ""); | |
48 | static_assert(tuple_size<const volatile array_type>::value == 0, ""); | |
49 | } | |
50 | } | |
51 | ||
52 | int main() | |
53 | { | |
54 | test01(); | |
55 | return 0; | |
56 | } |