DEFLLEN
static size_t buf_size = DEFLLEN;
cfile->rec = allocrec(NULL, DEFLLEN);
cfile->end = (u_char *)cfile->rec + DEFLLEN;
new_rec = allocrec(NULL, DEFLLEN);
new_end = (u_char *)new_rec + DEFLLEN;
crec = malloc(offsetof(RECHEADER, data[DEFLLEN]));
crec_end = crec->data + DEFLLEN;
prec = malloc(offsetof(RECHEADER, data[DEFLLEN]));
prec_end = prec->data + DEFLLEN;