1// 2003-05-01  Petur Runolfsson  <peturr02@ru.is>
2
3// Copyright (C) 2003 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#include <iostream>
22#include <cstdio>
23#include <testsuite_hooks.h>
24
25void test10()
26{
27  using namespace std;
28
29  bool test __attribute__((unused)) = true;
30  const char* name = "filebuf_virtuals-1.txt";
31
32  FILE* ret = freopen(name, "r", stdin);
33  VERIFY( ret != NULL );
34
35  streampos p1 = cin.tellg();
36  VERIFY( p1 != streampos(-1) );
37  VERIFY( streamoff(p1) == 0 );
38
39  cin.seekg(0, ios::end);
40  VERIFY( cin.good() );
41
42  streampos p2 = cin.tellg();
43  VERIFY( p2 != streampos(-1) );
44  VERIFY( p2 != p1 );
45  VERIFY( streamoff(p2) == ftell(stdin) );
46
47  cin.seekg(p1);
48  VERIFY( cin.good() );
49
50  streamoff n = p2 - p1;
51  VERIFY( n > 0 );
52
53  for (int i = 0; i < n; ++i)
54    {
55      streampos p3 = cin.tellg();
56      VERIFY( streamoff(p3) == i );
57      VERIFY( ftell(stdin) == i );
58      cin.get();
59      VERIFY( cin.good() );
60    }
61
62  streampos p4 = cin.tellg();
63  VERIFY( streamoff(p4) == n );
64  VERIFY( ftell(stdin) == n );
65  cin.get();
66  VERIFY( cin.eof() );
67}
68
69int main()
70{
71  test10();
72  return 0;
73}
74