744     uInt wsize = s->w_size;  in fill_window()  local
751             more = wsize;  in fill_window()
762         } else if (s->strstart >= wsize+MAX_DIST(s)) {  in fill_window()
764             memcpy((char *)s->window, (char *)s->window+wsize,  in fill_window()
765                    (unsigned)wsize);  in fill_window()
766             s->match_start -= wsize;  in fill_window()
767             s->strstart    -= wsize; /* we now have strstart >= MAX_DIST */  in fill_window()
768             s->block_start -= (long) wsize;  in fill_window()
780                 *p = (Pos)(m >= wsize ? m-wsize : NIL);  in fill_window()
783             n = wsize;  in fill_window()
787                 *p = (Pos)(m >= wsize ? m-wsize : NIL);  in fill_window()
792             more += wsize;  in fill_window()