1// Copyright (C) 2005, 2009 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.
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 COPYING3.  If not see
16// <http://www.gnu.org/licenses/>.
17
18
19// 27.6.2.3 class basic_ostream::sentry
20
21#include <ostream>
22#include <sstream>
23#include <testsuite_hooks.h>
24
25// libstdc++/9563
26struct buf : std::wstreambuf
27{
28  std::wios *io_;
29
30  buf(std::wios *io)
31  : io_(io) { }
32
33  virtual int
34  sync()
35  {
36    io_->setstate (std::wios::failbit);
37    return 0;
38  }
39};
40
41void
42test02()
43{
44  bool test __attribute__((unused)) = true;
45
46  buf b(0);
47  std::wostream strm(&b);
48
49  buf tb(&strm);
50  std::wostream tied(&tb);
51
52  strm.tie(&tied);
53  std::wostream::sentry s(strm);
54
55  VERIFY( !s );
56}
57
58int main()
59{
60  test02();
61  return 0;
62}
63