2018-08-31 Sandra Loosemore <sandra@codesourcery.com>
[official-gcc.git] / libstdc++-v3 / testsuite / 27_io / objects / wchar_t / 12048-5.cc
blob760b87f99e3cbfb916e9816adc6dfa3d32ebe8d9
1 // Copyright (C) 2003-2018 Free Software Foundation, Inc.
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.
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.
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/>.
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()
22 // { dg-do run { xfail *-*-* } }
23 // { dg-require-fileio "" }
25 #include <iostream>
26 #include <cstdio>
27 #include <cwchar>
28 #include <testsuite_hooks.h>
30 void
31 test01()
33 VERIFY( std::freopen("cin_unget-1.txt", "r", stdin) );
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())
43 std::wcin.get(c3);
44 VERIFY( std::wcin.good() );
45 VERIFY( c3 == std::char_traits<wchar_t>::to_char_type(c2) );
49 int main(void)
51 test01();
52 return 0;