mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-27 05:00:15 +00:00
a84dcb4bdf
With fortification enabled, fread calls return result needs to be checked, has it gets the __wur macro enabled. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
49 lines
1.0 KiB
C
49 lines
1.0 KiB
C
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include <support/xstdio.h>
|
|
|
|
char x[4096], z[4096], b[21], m[4096 * 4];
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
FILE *f = tmpfile ();
|
|
int i, failed = 0;
|
|
|
|
memset (x, 'x', 4096);
|
|
memset (z, 'z', 4096);
|
|
b[20] = 0;
|
|
|
|
for (i = 0; i <= 5; i++)
|
|
{
|
|
fwrite (x, 4096, 1, f);
|
|
fwrite (z, 4096, 1, f);
|
|
}
|
|
rewind (f);
|
|
|
|
xfread (m, 4096 * 4 - 10, 1, f);
|
|
xfread (b, 20, 1, f);
|
|
printf ("got %s (should be %s)\n", b, "zzzzzzzzzzxxxxxxxxxx");
|
|
if (strcmp (b, "zzzzzzzzzzxxxxxxxxxx"))
|
|
failed = 1;
|
|
|
|
fseek (f, -40, SEEK_CUR);
|
|
xfread (b, 20, 1, f);
|
|
printf ("got %s (should be %s)\n", b, "zzzzzzzzzzzzzzzzzzzz");
|
|
if (strcmp (b, "zzzzzzzzzzzzzzzzzzzz"))
|
|
failed = 1;
|
|
|
|
xfread (b, 20, 1, f);
|
|
printf ("got %s (should be %s)\n", b, "zzzzzzzzzzxxxxxxxxxx");
|
|
if (strcmp (b, "zzzzzzzzzzxxxxxxxxxx"))
|
|
failed = 1;
|
|
|
|
xfread (b, 20, 1, f);
|
|
printf ("got %s (should be %s)\n", b, "xxxxxxxxxxxxxxxxxxxx");
|
|
if (strcmp (b, "xxxxxxxxxxxxxxxxxxxx"))
|
|
failed = 1;
|
|
|
|
return failed;
|
|
}
|