WHDRSIZE
if (cc < (int)WHDRSIZE)
memmove(hsp->hs_wd, buf, (size_t)WHDRSIZE);
if (cc < (ssize_t)WHDRSIZE) {
cc -= WHDRSIZE;
if (cc < (int)WHDRSIZE) {
int i, n = (cc - WHDRSIZE) / sizeof(struct whoent);
cc -= WHDRSIZE;