(redisplay_window): Fix access to w->last_point{,_[xy]}.

diff --git a/src/xdisp.c b/src/xdisp.c
index 047fb9a73f3160439c4bb9b52ba2996a2ace04ba..b2e605b34af0cfbaf603473f77335f60f1e6174a 100644 (file)
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -1838,23 +1838,25 @@ redisplay_window (window, just_this_one, preserve_echo_area)
       && current_buffer != XMARKER (Voverlay_arrow_position)->buffer)
     {
       int this_scroll_margin = scroll_margin;
-      int last_point_y = w->last_point_y - XINT (w->top);
-      int last_point_x = (w->last_point_x
+      int last_point_y = XFASTINT (w->last_point_y) - XINT (w->top);
+      int last_point_x = (XFASTINT (w->last_point_x)
                          + (hscroll ? 1 - hscroll : 0)
                          - WINDOW_LEFT_MARGIN (w));
 
       /* Find where PT is located now on the frame.  */
       /* Check just_this_one as a way of verifying that the 
         window edges have not changed.  */
-      if (PT == w->last_point && just_this_one)
+      if (PT == XFASTINT (w->last_point) && just_this_one)
        {
          pos.hpos = last_point_x;
          pos.vpos = last_point_y;
          pos.bufpos = PT;
        }
-      else if (PT > w->last_point && w->last_point > startp && just_this_one)
+      else if (PT > XFASTINT (w->last_point)
+              && XFASTINT (w->last_point) > startp && just_this_one)
        {
-         pos = *compute_motion (w->last_point, last_point_y, last_point_x, 0,
+         pos = *compute_motion (XFASTINT (w->last_point),
+                                last_point_y, last_point_x, 0,
                                 PT, height,
                                 /* BUG FIX: See the comment of
                                    Fpos_visible_in_window_p (window.c).  */