1// Copyright (C) 2003-2015 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_seekoff_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);
45  fb.sputc(pod_uchar::from<char>(0xff));
46  fb.sputc(pod_uchar::from<char>(0));
47  fb.sputc(pod_uchar::from<char>(0));
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.sputc(pod_uchar::from<char>('a'));
52  fb.close();
53
54  fb.open(name, ios_base::in);
55  fb.sbumpc();
56  fb.sbumpc();
57  fb.sbumpc();
58
59  // Check that seekoff calls codecvt::length with the correct state.
60  traits_type::pos_type pos = fb.pubseekoff(0, ios_base::cur);
61  VERIFY( pos != traits_type::pos_type(traits_type::off_type(-1)) );
62
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  fb.sbumpc();
69  c = fb.sbumpc();
70  VERIFY( c != traits_type::eof() );
71  VERIFY( traits_type::eq(traits_type::to_char_type(c),
72			  pod_uchar::from<char>('a')) );
73  c = fb.sbumpc();
74  VERIFY( c == traits_type::eof() );
75
76  fb.close();
77}
78
79int main()
80{
81  test01();
82  return 0;
83}
84