File: bug12.c

package info (click to toggle)
glibc 2.24-11+deb9u4
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 225,852 kB
  • sloc: ansic: 996,505; asm: 261,827; sh: 10,484; makefile: 9,856; cpp: 4,169; python: 3,971; perl: 2,254; awk: 1,753; pascal: 1,521; yacc: 291; sed: 80
file content (46 lines) | stat: -rw-r--r-- 995 bytes parent folder | download | duplicates (27)
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
#include <stdio.h>
#include <string.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);

  fread (m, 4096 * 4 - 10, 1, f);
  fread (b, 20, 1, f);
  printf ("got %s (should be %s)\n", b, "zzzzzzzzzzxxxxxxxxxx");
  if (strcmp (b, "zzzzzzzzzzxxxxxxxxxx"))
    failed = 1;

  fseek (f, -40, SEEK_CUR);
  fread (b, 20, 1, f);
  printf ("got %s (should be %s)\n", b, "zzzzzzzzzzzzzzzzzzzz");
  if (strcmp (b, "zzzzzzzzzzzzzzzzzzzz"))
    failed = 1;

  fread (b, 20, 1, f);
  printf ("got %s (should be %s)\n", b, "zzzzzzzzzzxxxxxxxxxx");
  if (strcmp (b, "zzzzzzzzzzxxxxxxxxxx"))
    failed = 1;

  fread (b, 20, 1, f);
  printf ("got %s (should be %s)\n", b, "xxxxxxxxxxxxxxxxxxxx");
  if (strcmp (b, "xxxxxxxxxxxxxxxxxxxx"))
    failed = 1;

  return failed;
}