1// 2004-02-14  Petur Runolfsson  <peturr02@ru.is>
2
3// Copyright (C) 2004 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 2, 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 COPYING.  If not, write to the Free
18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19// USA.
20
21// 27.8.1.4 Overridden virtual functions
22
23#include <fstream>
24#include <locale>
25
26class Cvt : public std::codecvt<wchar_t, char, std::mbstate_t>
27{
28protected:
29  virtual std::codecvt_base::result
30  do_out(std::mbstate_t&, const wchar_t* from, const wchar_t*,
31	 const wchar_t*& from_next, char* to, char*,
32	 char*& to_next) const
33  {
34    from_next = from;
35    to_next = to;
36    return std::codecvt_base::error;
37  }
38
39  virtual bool
40  do_always_noconv() const throw()
41  { return false; }
42};
43
44// libstdc++/13858
45void test01()
46{
47  using namespace std;
48
49  wfilebuf fb;
50  fb.pubimbue(locale(locale::classic(), new Cvt));
51  fb.open("tmp_13858_wchar_t", ios_base::out);
52
53  try
54    {
55      fb.sputc(L'a');
56      fb.sputc(L'b');
57      fb.pubimbue(locale::classic());
58      fb.sputc(L'c');
59      fb.pubsync();
60      fb.close();
61    }
62  catch (std::exception&)
63    {
64    }
65}
66
67int main()
68{
69  test01();
70  return 0;
71}
72