1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
/* Test of freadptr() function.
Copyright (C) 2007-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
#include <config.h>
#include "freadptr.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "macros.h"
static int
freadptrbufsize (FILE *fp)
{
size_t size = 0;
freadptr (fp, &size);
return size;
}
int
main (int argc, char **argv)
{
int nbytes = atoi (argv[1]);
if (nbytes > 0)
{
void *buf = malloc (nbytes);
ASSERT (fread (buf, 1, nbytes, stdin) == nbytes);
free (buf);
}
if (nbytes == 0)
ASSERT (freadptrbufsize (stdin) == 0);
else
{
if (lseek (0, 0, SEEK_CUR) == nbytes)
/* An unbuffered stdio, such as BeOS or on uClibc compiled without
__STDIO_BUFFERS. */
ASSERT (freadptrbufsize (stdin) == 0);
else
/* Normal buffered stdio. */
ASSERT (freadptrbufsize (stdin) != 0);
}
return 0;
}
|
