BEFORE: buffer2: 0xb831b0
BEFORE: buffer3: 0xb831b0
BEFORE: buffer1: 0xb83010
AFTER: buffer2: 0xb831b0
AFTER: buffer3: 0xb831b0
AFTER: buffer1: 0xb83010



  int * buffer1, * buffer2, * buffer3;
  buffer1 = (int*) malloc (100*sizeof(int));
  buffer2 = (int*) calloc (100,sizeof(int));
  buffer3 = (int*) realloc (buffer2,500*sizeof(int));
  printf("BEFORE: buffer2: %p\n", buffer2);
  printf("BEFORE: buffer3: %p\n", buffer3);
  printf("BEFORE: buffer1: %p\n", buffer1);
  free (buffer1);
  free (buffer3);
  printf("AFTER: buffer2: %p\n", buffer2);
  printf("AFTER: buffer3: %p\n", buffer3);
  printf("AFTER: buffer1: %p\n", buffer1);
  return 0;