1// Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009
2// Free Software Foundation, Inc.
3//
4// This file is part of the GNU ISO C++ Library.  This library is free
5// software; you can redistribute it and/or modify it under the
6// terms of the GNU General Public License as published by the
7// Free Software Foundation; either version 3, or (at your option)
8// any later version.
9
10// This library is distributed in the hope that it will be useful,
11// but WITHOUT ANY WARRANTY; without even the implied warranty of
12// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13// GNU General Public License for more details.
14
15// You should have received a copy of the GNU General Public License along
16// with this library; see the file COPYING3.  If not see
17// <http://www.gnu.org/licenses/>.
18
19// { dg-require-fileio "" }
20
21#include <iostream>
22#include <cstdio>
23#include <testsuite_hooks.h>
24
25void
26test01()
27{
28  std::freopen("cin_unget-1.txt", "r", stdin);
29
30  char buf[2];
31  VERIFY( std::cin.rdbuf()->sgetn(buf, 2) == 2 );
32  int c1 = std::cin.rdbuf()->sungetc();
33  int c2 = std::cin.rdbuf()->sbumpc();
34  VERIFY( c1 == std::char_traits<char>::to_int_type(buf[1]) );
35  VERIFY( c2 == c1 );
36}
37
38int main(void)
39{
40  test01();
41  return 0;
42}
43