From: Karl Heuer <kwzh@gnu.org>
Date: Wed, 2 Feb 1994 07:25:37 +0000 (+0000)
Subject: (try_window_id): Don't pass value beyond ZV to compute_motion.
X-Git-Tag: archive/raspbian/1%29.2+1-2+rpi1^2~5^2~93321
X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/www.github.com/%22bookmarks:///%22http:/www.example.com/cgi/%22https:/www.github.com/%22bookmarks:/?a=commitdiff_plain;h=6a1dc7ac28663a6b63aa55d0000228882d4d4b97;p=emacs.git

(try_window_id): Don't pass value beyond ZV to compute_motion.
---

diff --git a/src/xdisp.c b/src/xdisp.c
index 2dbbbabb0d0..2fd2e6ee629 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -1425,13 +1425,13 @@ try_window_id (window)
   if (Z - GPT < end_unchanged)
     end_unchanged = Z - GPT;
 
-  if (beg_unchanged + 1 < start)
+  if (beg_unchanged + BEG < start)
     return 0;			/* Give up if changes go above top of window */
 
   /* Find position before which nothing is changed.  */
   bp = *compute_motion (start, 0, lmargin,
-			beg_unchanged + 1, height + 1, 0, width, hscroll,
-			pos_tab_offset (w, start));
+			min (ZV, beg_unchanged + BEG), height + 1, 0,
+			width, hscroll, pos_tab_offset (w, start));
   if (bp.vpos >= height)
     {
       if (point < bp.bufpos && !bp.contin)