From: Gerd Moellmann <gerd@gnu.org>
Date: Wed, 27 Sep 2000 11:43:08 +0000 (+0000)
Subject: (window_box_height): Add an assertion.
X-Git-Tag: emacs-pretest-21.0.90~1348
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=7ecd493745ca9df70249e04f303cfb5451679f10;p=emacs.git

(window_box_height): Add an assertion.
---

diff --git a/src/xdisp.c b/src/xdisp.c
index 1c76ec8e797..dfe7c3dd95d 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -818,6 +818,8 @@ window_box_height (w)
 {
   struct frame *f = XFRAME (w->frame);
   int height = XFASTINT (w->height) * CANON_Y_UNIT (f);
+
+  xassert (height >= 0);
   
   if (WINDOW_WANTS_MODELINE_P (w))
     height -= CURRENT_MODE_LINE_HEIGHT (w);