Page History

size_t num_elements;

/* initialize num_elements to the number of elements needed */

long *buffer = (long *)calloc(num_elements, sizeof(long));
if (buffer == NULL) {
  /* handle error condition */
}
/*...*/
free(buffer);
buffer = NULL; 

long *buffer;
size_t num_elements;

/* initialize num_elements to the number of elements needed */

if (num_elements > SIZE_MAX/sizeof(long)) {
  /* handle error condition */
}
buffer = (long *)calloc(num_elements, sizeof(long));
if (buffer == NULL) {
  /* handle error condition */
}