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762baaf0 | 1 | // { dg-do compile { target c++20 } } |
4ef5bbd8 | 2 | |
a945c346 | 3 | // Copyright (C) 2019-2024 Free Software Foundation, Inc. |
4ef5bbd8 JW |
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 | // N4830 23.7, Range access [iterator.range] | |
21 | ||
22 | #include <iterator> | |
23 | ||
24 | void | |
25 | test01() | |
26 | { | |
27 | static int i[1]; | |
28 | constexpr auto s = std::ssize(i); | |
29 | const std::ptrdiff_t* check_type = &s; | |
30 | static_assert(s == 1); | |
31 | } | |
32 | ||
33 | void | |
34 | test02() | |
35 | { | |
36 | static int i[] = { 1, 2 }; | |
37 | constexpr auto s = std::ssize(i); | |
38 | const std::ptrdiff_t* check_type = &s; | |
39 | static_assert(s == 2); | |
40 | } | |
41 | ||
42 | void | |
43 | test03() | |
44 | { | |
45 | struct Cont | |
46 | { | |
47 | constexpr unsigned short size() const { return 3; } | |
48 | }; | |
49 | constexpr Cont c; | |
50 | constexpr auto s = std::ssize(c); | |
51 | const std::ptrdiff_t* check_type = &s; | |
52 | static_assert(s == 3); | |
53 | } | |
54 | ||
55 | void | |
56 | test04() | |
57 | { | |
58 | struct Cont | |
59 | { | |
60 | constexpr unsigned long long size() const { return 4; } | |
61 | }; | |
62 | constexpr Cont c; | |
63 | constexpr auto s = std::ssize(c); | |
64 | const long long* check_type = &s; | |
65 | static_assert(s == 4); | |
66 | } |