/* sort in inverse order */
static int prefork_sort_oldest(const void *ap, const void *bp)
{
- struct prefork_oldest *a = (struct prefork_oldest *)ap;
- struct prefork_oldest *b = (struct prefork_oldest *)bp;
+ const struct prefork_oldest *a = (const struct prefork_oldest *)ap;
+ const struct prefork_oldest *b = (const struct prefork_oldest *)bp;
if (a->started == b->started) {
return 0;