1// Copyright (C) 2004 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 2, 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 COPYING.  If not, write to the Free
16// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
17// USA.
18
19// As a special exception, you may use this file as part of a free software
20// library without restriction.  Specifically, if other files instantiate
21// templates or use macros or inline functions from this file, or you compile
22// this file and link it with other files to produce an executable, this
23// file does not by itself cause the resulting executable to be covered by
24// the GNU General Public License.  This exception does not however
25// invalidate any other reasons why the executable file might be covered by
26// the GNU General Public License.
27
28// 27.5.2 template class basic_streambuf
29
30#include <cstring>
31#include <cwchar>
32#include <streambuf>
33#include <sstream>
34#include <ostream>
35#include <testsuite_hooks.h>
36
37// libstdc++/9424
38class Outbuf_2 : public std::wstreambuf
39{
40  wchar_t buf[1];
41
42public:
43  Outbuf_2()
44  {
45    setp(buf, buf + 1);
46  }
47
48  int_type overflow(int_type c)
49  {
50    int_type eof = traits_type::eof();
51
52    if (pptr() < epptr())
53      {
54	if (traits_type::eq_int_type(c, eof))
55	  return traits_type::not_eof(c);
56
57	*pptr() = traits_type::to_char_type(c);
58	pbump(1);
59	return c;
60      }
61
62    return eof;
63  }
64};
65
66class Inbuf_2 : public std::wstreambuf
67{
68  static const wchar_t buf[];
69  const wchar_t* current;
70  int size;
71
72public:
73  Inbuf_2()
74  {
75    current = buf;
76    size = std::wcslen(buf);
77  }
78
79  int_type underflow()
80  {
81    if (current < buf + size)
82      return traits_type::to_int_type(*current);
83    return traits_type::eof();
84  }
85
86  int_type uflow()
87  {
88    if (current < buf + size)
89      return traits_type::to_int_type(*current++);
90    return traits_type::eof();
91  }
92};
93
94const wchar_t Inbuf_2::buf[] = L"Atteivlis";
95
96void test11()
97{
98  bool test __attribute__((unused)) = true;
99
100  Inbuf_2 inbuf1;
101  std::wistream is(&inbuf1);
102  Outbuf_2 outbuf1;
103  is >> &outbuf1;
104  VERIFY( inbuf1.sgetc() == L't' );
105  VERIFY( is.good() );
106}
107
108int main()
109{
110  test11();
111  return 0;
112}
113