1// Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009
2// Free Software Foundation
3//
4// This file is part of the GNU ISO C++ Library.  This library is free
5// software; you can redistribute it and/or modify it under the
6// terms of the GNU General Public License as published by the
7// Free Software Foundation; either version 3, or (at your option)
8// any later version.
9
10// This library is distributed in the hope that it will be useful,
11// but WITHOUT ANY WARRANTY; without even the implied warranty of
12// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13// GNU General Public License for more details.
14
15// You should have received a copy of the GNU General Public License along
16// with this library; see the file COPYING3.  If not see
17// <http://www.gnu.org/licenses/>.
18
19// { dg-require-fileio "" }
20
21#include <cstdio>
22#include <fstream>
23#include <cstring>
24#include <ext/stdio_filebuf.h>
25#include <testsuite_hooks.h>
26
27void test1()
28{
29  using namespace std;
30  bool test __attribute__((unused)) = true;
31
32  FILE* file = fopen("tmp_10063-1", "w");
33  putc('0', file);
34  putc('1', file);
35  {
36    __gnu_cxx::stdio_filebuf<char> sbuf(file, ios_base::out);
37    sbuf.sputc('2');
38    sbuf.sputc('3');
39  }
40  putc('4', file);
41  fclose(file);
42
43  filebuf fbuf;
44  fbuf.open("tmp_10063-1", ios_base::in);
45  char buf[10];
46  streamsize n = fbuf.sgetn(buf, sizeof(buf));
47  fbuf.close();
48
49  VERIFY(n == 5);
50  VERIFY(!memcmp(buf, "01234", 5));
51}
52
53int main()
54{
55  test1();
56  return 0;
57}
58