1// Copyright (C) 2003, 2005 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// 27.8.1.4 Overridden virtual functions
20
21#include <locale>
22#include <fstream>
23#include <testsuite_hooks.h>
24#include <testsuite_character.h>
25
26// libstdc++/12790
27void test01()
28{
29  using namespace std;
30  using __gnu_test::pod_uchar;
31  typedef basic_filebuf<pod_uchar>::traits_type traits_type;
32
33  bool test __attribute__((unused)) = true;
34  const char* name = "tmp_seekoff_12790";
35
36  locale loc(locale::classic(),
37	     new codecvt<traits_type::char_type, char,
38	     traits_type::state_type>);
39
40  basic_filebuf<pod_uchar> fb;
41  fb.pubimbue(loc);
42
43  fb.open(name, ios_base::out);
44  fb.sputc(pod_uchar::from<char>(0xff));
45  fb.sputc(pod_uchar::from<char>(0));
46  fb.sputc(pod_uchar::from<char>(0));
47  fb.sputc(pod_uchar::from<char>('a'));
48  fb.sputc(pod_uchar::from<char>('a'));
49  fb.sputc(pod_uchar::from<char>('a'));
50  fb.sputc(pod_uchar::from<char>('a'));
51  fb.close();
52
53  fb.open(name, ios_base::in);
54  fb.sbumpc();
55  fb.sbumpc();
56  fb.sbumpc();
57
58  // Check that seekoff calls codecvt::length with the correct state.
59  traits_type::pos_type pos = fb.pubseekoff(0, ios_base::cur);
60  VERIFY( pos != traits_type::pos_type(traits_type::off_type(-1)) );
61
62  traits_type::int_type c = fb.sbumpc();
63  VERIFY( c != traits_type::eof() );
64  VERIFY( traits_type::eq(traits_type::to_char_type(c),
65			  pod_uchar::from<char>('a')) );
66  fb.sbumpc();
67  fb.sbumpc();
68  c = fb.sbumpc();
69  VERIFY( c != traits_type::eof() );
70  VERIFY( traits_type::eq(traits_type::to_char_type(c),
71			  pod_uchar::from<char>('a')) );
72  c = fb.sbumpc();
73  VERIFY( c == traits_type::eof() );
74
75  fb.close();
76}
77
78int main()
79{
80  test01();
81  return 0;
82}
83