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// 27.5.2.2.3 Get area
19
20// { dg-require-fileio "" }
21
22#include <fstream>
23#include <testsuite_hooks.h>
24
25class Derived_fbuf : public std::filebuf
26{
27public:
28  const char_type* pub_egptr() const
29  { return egptr(); }
30
31  const char_type* pub_gptr() const
32  { return gptr(); }
33};
34
35// libstdc++/9701 (in_avail)
36void test01()
37{
38  using namespace std;
39  bool test __attribute__((unused)) = true;
40  const char* name = "tmp_file1";
41
42  Derived_fbuf df2;
43  df2.open(name, ios_base::in | ios_base::out | ios_base::trunc);
44
45  df2.sputn("Comomoc", 7);
46
47  df2.pubseekoff(0, ios_base::beg);
48  df2.sbumpc();
49  df2.sputbackc('t');
50
51  VERIFY( df2.pub_gptr() < df2.pub_egptr() );
52  VERIFY( df2.in_avail() == df2.pub_egptr() - df2.pub_gptr() );
53}
54
55int
56main()
57{
58  test01();
59  return 0;
60}
61