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1 | // { dg-options "-std=gnu++2a" } |
2 | // { dg-do run { target c++2a } } | |
3 | ||
7adcbafe | 4 | // Copyright (C) 2020-2022 Free Software Foundation, Inc. |
120e8734 JW |
5 | // |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
9 | // Free Software Foundation; either version 3, or (at your option) | |
10 | // any later version. | |
11 | ||
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | ||
17 | // You should have received a copy of the GNU General Public License along | |
18 | // with this library; see the file COPYING3. If not see | |
19 | // <http://www.gnu.org/licenses/>. | |
20 | ||
21 | #include <iterator> | |
22 | #include <sstream> | |
23 | #include <testsuite_hooks.h> | |
24 | ||
25 | void | |
26 | test01() | |
27 | { | |
28 | static_assert( std::sentinel_for<std::default_sentinel_t, | |
29 | std::istream_iterator<std::string>> ); | |
30 | static_assert( std::sentinel_for<std::default_sentinel_t, | |
31 | std::istream_iterator<int>> ); | |
32 | ||
33 | std::istream_iterator<int> i = std::default_sentinel; | |
34 | VERIFY( i == std::default_sentinel ); | |
35 | VERIFY( std::default_sentinel == i ); | |
36 | } | |
37 | ||
38 | void | |
39 | test02() | |
40 | { | |
41 | std::istringstream in("1 2 3"); | |
42 | std::istream_iterator<int> iter(in); | |
43 | VERIFY( iter != std::default_sentinel ); | |
44 | VERIFY( std::default_sentinel != iter ); | |
45 | ||
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46 | (void) *iter++; |
47 | (void) *iter++; | |
48 | (void) *iter++; | |
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49 | VERIFY( iter == std::default_sentinel ); |
50 | VERIFY( std::default_sentinel == iter ); | |
51 | } | |
52 | ||
53 | int main() | |
54 | { | |
55 | test01(); | |
56 | test02(); | |
57 | } |