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a945c346 | 1 | // Copyright (C) 2003-2024 Free Software Foundation, Inc. |
73780bfe LR |
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 | |
748086b7 | 6 | // Free Software Foundation; either version 3, or (at your option) |
73780bfe LR |
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 | |
748086b7 JJ |
15 | // with this library; see the file COPYING3. If not see |
16 | // <http://www.gnu.org/licenses/>. | |
73780bfe | 17 | |
4c620c39 PR |
18 | // DR 49 states that cin.rdbuf()->sbumpc() and fgetc(stdin) should be |
19 | // equivalent and interchangable. Currently however, cin.rdbuf()->sungetc() | |
20 | // only returns characters that were read with cin.rdbuf()->sbumpc() | |
21 | ||
22 | // { dg-do run { xfail *-*-* } } | |
6cec3c81 | 23 | // { dg-require-fileio "" } |
4c620c39 | 24 | |
73780bfe | 25 | #include <iostream> |
4c620c39 PR |
26 | #include <cstdio> |
27 | #include <cwchar> | |
73780bfe LR |
28 | #include <testsuite_hooks.h> |
29 | ||
30 | void | |
31 | test01() | |
32 | { | |
820d2ff7 | 33 | VERIFY( std::freopen("cin_unget-1.txt", "r", stdin) ); |
73780bfe | 34 | |
4c620c39 PR |
35 | wchar_t c1; |
36 | std::wint_t c2; | |
37 | wchar_t c3; | |
38 | std::wcin.get(c1); | |
39 | c2 = std::fgetwc(stdin); | |
40 | std::wcin.unget(); | |
41 | if (std::wcin.good()) | |
42 | { | |
43 | std::wcin.get(c3); | |
44 | VERIFY( std::wcin.good() ); | |
45 | VERIFY( c3 == std::char_traits<wchar_t>::to_char_type(c2) ); | |
46 | } | |
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47 | } |
48 | ||
49 | int main(void) | |
50 | { | |
51 | test01(); | |
52 | return 0; | |
53 | } |