1 /* Test of freadahead() function.
2 Copyright (C) 2007 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program 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.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
18 /* Written by Bruno Haible <bruno@clisp.org>, 2007. */
22 #include "freadahead.h"
28 #define ASSERT(expr) \
33 fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
40 main (int argc, char **argv)
42 int nbytes = atoi (argv[1]);
45 void *buf = malloc (nbytes);
46 ASSERT (fread (buf, 1, nbytes, stdin) == nbytes);
50 ASSERT (freadahead (stdin) == 0);
53 if (lseek (0, 0, SEEK_CUR) == nbytes)
54 /* An unbuffered stdio, such as BeOS or on uClibc compiled without
56 ASSERT (freadahead (stdin) == 0);
58 /* Normal buffered stdio. */
59 ASSERT (freadahead (stdin) != 0);