1// Copyright (C) 2003 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 2, or (at your option)
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
15// with this library; see the file COPYING.  If not, write to the Free
16// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
17// USA.
18
19// DR 49 states that cin.rdbuf()->sbumpc() and fgetc(stdin) should be
20// equivalent and interchangable. Currently however, cin.rdbuf()->sungetc()
21// only returns characters that were read with cin.rdbuf()->sbumpc()
22
23// { dg-do run { xfail *-*-* } }
24
25#include <iostream>
26#include <cstdio>
27#include <cwchar>
28#include <testsuite_hooks.h>
29
30void
31test01()
32{
33  std::freopen("cin_unget-1.txt", "r", stdin);
34
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    }
47}
48
49int main(void)
50{
51  test01();
52  return 0;
53}
54