1// 1999-10-11 bkoz
2
3// Copyright (C) 1999-2015 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
21// 27.5.2 template class basic_streambuf
22
23#include <cstring> // for memset, memcmp
24#include <streambuf>
25#include <sstream>
26#include <ostream>
27#include <testsuite_hooks.h>
28
29// libstdc++/9424
30class Outbuf_2 : public std::streambuf
31{
32  char buf[1];
33
34public:
35  Outbuf_2()
36  {
37    setp(buf, buf + 1);
38  }
39
40  int_type overflow(int_type c)
41  {
42    int_type eof = traits_type::eof();
43
44    if (pptr() < epptr())
45      {
46	if (traits_type::eq_int_type(c, eof))
47	  return traits_type::not_eof(c);
48
49	*pptr() = traits_type::to_char_type(c);
50	pbump(1);
51	return c;
52      }
53
54    return eof;
55  }
56};
57
58class Inbuf_2 : public std::streambuf
59{
60  static const char buf[];
61  const char* current;
62  int size;
63
64public:
65  Inbuf_2()
66  {
67    current = buf;
68    size = std::strlen(buf);
69  }
70
71  int_type underflow()
72  {
73    if (current < buf + size)
74      return traits_type::to_int_type(*current);
75    return traits_type::eof();
76  }
77
78  int_type uflow()
79  {
80    if (current < buf + size)
81      return traits_type::to_int_type(*current++);
82    return traits_type::eof();
83  }
84};
85
86const char Inbuf_2::buf[] = "Atteivlis";
87
88void test12()
89{
90  bool test __attribute__((unused)) = true;
91
92  Outbuf_2 outbuf2;
93  std::ostream os (&outbuf2);
94  Inbuf_2 inbuf2;
95  os << &inbuf2;
96  VERIFY( inbuf2.sgetc() == 't' );
97  VERIFY( os.good() );
98}
99
100int main()
101{
102  test12();
103  return 0;
104}
105