[Emacs-diffs] /srv/bzr/emacs/emacs-24 r110948: Fix assertion violations when clicking on Info bread-crumbs.

[Eli Zaretskii]

------------------------------------------------------------
revno: 110948
committer: Eli Zaretskii <address@hidden>
branch nick: emacs-24
timestamp: Sat 2012-11-24 09:25:52 +0200
message:
  Fix assertion violations when clicking on Info bread-crumbs.
  
   src/xdisp.c (draw_glyphs): Don't draw in mouse face if mouse
   highlighting on the frame was cleared.  Prevents assertion
   violations when repeatedly clicking on the "Top" link of the
   "bread-crumbs" in Info buffers.
modified:
  src/ChangeLog
  src/xdisp.c

=== modified file 'src/ChangeLog'
--- a/src/ChangeLog     2012-11-24 06:24:13 +0000
+++ b/src/ChangeLog     2012-11-24 07:25:52 +0000
@@ -1,3 +1,10 @@
+2012-11-24  Eli Zaretskii  <address@hidden>
+
+       * xdisp.c (draw_glyphs): Don't draw in mouse face if mouse
+       highlighting on the frame was cleared.  Prevents assertion
+       violations when repeatedly clicking on the "Top" link of the
+       "bread-crumbs" in Info buffers.
+
 2012-11-23  Paul Eggert  <address@hidden>
            Eli Zaretskii  <address@hidden>
 

=== modified file 'src/xdisp.c'
--- a/src/xdisp.c       2012-11-23 08:27:05 +0000
+++ b/src/xdisp.c       2012-11-24 07:25:52 +0000
@@ -23512,7 +23512,9 @@
 
       /* If mouse highlighting is on, we may need to draw adjacent
         glyphs using mouse-face highlighting.  */
-      if (area == TEXT_AREA && row->mouse_face_p)
+      if (area == TEXT_AREA && row->mouse_face_p
+         && hlinfo->mouse_face_beg_row >= 0
+         && hlinfo->mouse_face_end_row >= 0)
        {
          struct glyph_row *mouse_beg_row, *mouse_end_row;