1// 2003-02-06  Paolo Carlini  <pcarlini@unitus.it>
2
3// Copyright (C) 2003, 2005, 2009 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library.  This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 3, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14// GNU General Public License for more details.
15
16// You should have received a copy of the GNU General Public License along
17// with this library; see the file COPYING3.  If not see
18// <http://www.gnu.org/licenses/>.
19
20
21// 27.6.2.3 class basic_ostream::sentry
22
23#include <ostream>
24#include <sstream>
25#include <testsuite_hooks.h>
26
27// libstdc++/9563
28struct buf : std::streambuf
29{
30  std::ios *io_;
31
32  buf(std::ios *io)
33  : io_(io) { }
34
35  virtual int
36  sync()
37  {
38    io_->setstate (std::ios::failbit);
39    return 0;
40  }
41};
42
43void
44test02()
45{
46  bool test __attribute__((unused)) = true;
47
48  buf b(0);
49  std::ostream strm(&b);
50
51  buf tb(&strm);
52  std::ostream tied(&tb);
53
54  strm.tie(&tied);
55  std::ostream::sentry s(strm);
56
57  VERIFY( !s );
58}
59
60int main()
61{
62  test02();
63  return 0;
64}
65