1// 2004-10-01  Paolo Carlini  <pcarlini@suse.de>
2
3// Copyright (C) 2004, 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  [lib.stringbuf.virtuals]
21
22#include <sstream>
23#include <testsuite_hooks.h>
24
25class my_stringbuf : public std::stringbuf
26{
27public:
28  my_stringbuf(const std::string& str, std::ios_base::openmode mode)
29  : std::stringbuf(str, mode) { }
30
31  int_type
32  pub_pbackfail(int_type c)
33  { return this->pbackfail(c); }
34};
35
36void test01()
37{
38  bool test __attribute__((unused)) = true;
39  using namespace std;
40
41  typedef my_stringbuf::int_type    int_type;
42  typedef my_stringbuf::traits_type traits_type;
43
44  my_stringbuf sbuf("any", ios_base::in | ios_base::out);
45
46  int_type c = sbuf.sgetc();
47  VERIFY( c == 'a' );
48
49  c = sbuf.pub_pbackfail('z');
50  VERIFY( c == traits_type::eof() );
51  c = sbuf.sbumpc();
52  VERIFY( c == 'a' );
53
54  c = sbuf.pub_pbackfail('a');
55  VERIFY( c == 'a' );
56  c = sbuf.sbumpc();
57  VERIFY( c == 'a' );
58
59  c = sbuf.pub_pbackfail('x');
60  VERIFY( c == 'x' );
61  c = sbuf.sbumpc();
62  VERIFY( c == 'x' );
63
64  const int_type eof = traits_type::eof();
65  c = sbuf.pub_pbackfail(eof);
66  VERIFY( c == traits_type::not_eof(eof) );
67  c = sbuf.sgetc();
68  VERIFY( c == 'x' );
69}
70
71int main()
72{
73  test01();
74  return 0;
75}
76