1// Copyright (C) 2003, 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// 27.8.1.4 Overridden virtual functions
19
20// { dg-require-fileio "" }
21
22#include <locale>
23#include <fstream>
24#include <testsuite_hooks.h>
25#include <testsuite_character.h>
26
27// libstdc++/12790
28void test01()
29{
30  using namespace std;
31  using __gnu_test::pod_uchar;
32  typedef basic_filebuf<pod_uchar>::traits_type traits_type;
33
34  bool test __attribute__((unused)) = true;
35  const char* name = "tmp_seekpos_12790";
36
37  locale loc(locale::classic(),
38	     new codecvt<traits_type::char_type, char,
39	     traits_type::state_type>);
40
41  basic_filebuf<pod_uchar> fb;
42  fb.pubimbue(loc);
43
44  fb.open(name, ios_base::out | ios_base::trunc);
45  fb.sputc(pod_uchar::from<char>('b'));
46  fb.sputc(pod_uchar::from<char>(0xff));
47  fb.sputc(pod_uchar::from<char>('a'));
48  fb.sputc(pod_uchar::from<char>(0xfc));
49  fb.sputc(pod_uchar::from<char>(0));
50  fb.sputc(pod_uchar::from<char>(0));
51
52  fb.close();
53  fb.open(name, ios_base::in);
54
55  fb.sbumpc();
56  fb.sbumpc();
57  traits_type::pos_type pos1 = fb.pubseekoff(0, ios_base::cur);
58  fb.sbumpc();
59  fb.sbumpc();
60
61  // Check that seekpos returns the correct state
62  traits_type::pos_type pos2 = fb.pubseekpos(pos1);
63  traits_type::int_type c = fb.sbumpc();
64  VERIFY( c != traits_type::eof() );
65  VERIFY( traits_type::eq(traits_type::to_char_type(c),
66			  pod_uchar::from<char>('a')) );
67  fb.sbumpc();
68
69  fb.pubseekpos(pos2);
70  c = fb.sbumpc();
71  VERIFY( c != traits_type::eof() );
72  VERIFY( traits_type::eq(traits_type::to_char_type(c),
73			  pod_uchar::from<char>('a')) );
74
75  fb.close();
76}
77
78int main()
79{
80  test01();
81  return 0;
82}
83