1// 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
2
3// Copyright (C) 2001, 2002, 2003, 2009 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 3, 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 COPYING3.  If not see
18// <http://www.gnu.org/licenses/>.
19
20// 27.7.1.3 Overridden virtual functions
21
22// { dg-require-fileio "" }
23
24#include <fstream>
25#include <testsuite_hooks.h>
26
27void test02(std::filebuf& in, bool pass)
28{
29  bool test __attribute__((unused)) = true;
30  using namespace std;
31  typedef streambuf::pos_type pos_type;
32  typedef streambuf::off_type off_type;
33  pos_type bad = pos_type(off_type(-1));
34  pos_type p = 0;
35
36  // seekoff
37  p = in.pubseekoff(0, ios_base::beg, ios_base::in);
38  VERIFY( pass == (p != bad) );
39
40  p = in.pubseekoff(0, ios_base::beg, ios_base::out);
41  VERIFY( pass == (p != bad) );  // See libstdc++/12232
42
43  p = in.pubseekoff(0, ios_base::beg);
44  VERIFY( pass == (p != bad) );
45}
46
47const char name_01[] = "filebuf_virtuals-1.tst"; // file with data in it
48const char name_03[] = "filebuf_members-1.tst"; // empty file
49
50int main()
51{
52  using namespace std;
53
54  filebuf in1;
55  in1.open(name_01, ios_base::in);
56  filebuf in2;
57  filebuf in3;
58  in3.open(name_03, ios_base::in);
59  test02(in1, true);
60  test02(in2, false);
61  test02(in3, true);
62  return 0;
63}
64