File: partial_load.c

package info (click to toggle)
valgrind 1%3A3.3.1-3
  • links: PTS
  • area: main
  • in suites: lenny
  • size: 34,452 kB
  • ctags: 27,778
  • sloc: ansic: 234,398; sh: 14,186; xml: 11,662; perl: 4,410; asm: 3,135; makefile: 3,011; exp: 625; cpp: 255; haskell: 195
file content (45 lines) | stat: -rw-r--r-- 835 bytes parent folder | download | duplicates (8)
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

#include <stdlib.h>
#include <assert.h>

int main ( void )
{
  long  w;
  int   i;
  char* p;

  assert(sizeof(long) == sizeof(void*));

  /* partial load, which --partial-loads-ok=yes should suppress */
  p = calloc( sizeof(long)-1, 1 );
  assert(p);
  w = *(long*)p;
  free(p);

  /* partial but misaligned, cannot be suppressed */
  p = calloc( sizeof(long), 1 );
  assert(p);
  p++;
  w += *(long*)p;
  p--;
  free(p);

  /* partial but not word sized, cannot be suppressed */
  p = calloc( sizeof(short)-1, 1 );
  assert(p);
  w += (long)( *(short*)p );
  free(p);

  /* aligned, word sized, but completely invalid - cannot be suppressed */
  p = calloc( sizeof(long), 1 );
  assert(p);
  free(p);
  w += *(long*)p;

  /* dump result in a way gcc can't understand */
  for (i = 0; i < 64; i++)
     w <<= 1;

  return (int)w;
}