/* file: pointer0.c
   purpose: 

   Show how overwriting <I>malloc</I>'s region header
   can cause a delayed segmentation fault.

*/

#include <stdio.h>
#include <stdlib.h>

int
main (int argc, const char *argv[]) {
  int * p = (int *) malloc (100);
  p[-1] = 0;
  return 0;
}