Fix bug #9184 with org-agenda crashing under bidi redisplay.

 src/xdisp.c (compute_display_string_pos): Don't use cached display
 string position if the buffer had its restriction changed.

2 files changed, 8 insertions, 1 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 2625c6f9aad..bfc06b35cc2 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,9 @@
+2011-07-28  Eli Zaretskii  <eliz@fencepost.gnu.org>
+
+        * xdisp.c (compute_display_string_pos): Don't use cached display
+        string position if the buffer had its restriction changed.
+        (Bug#9184)
+
 2011-07-28  Paul Eggert  <eggert@cs.ucla.edu>
 
         * callproc.c (Fcall_process): Use 'volatile' to avoid vfork clobbering.
diff --git a/src/xdisp.c b/src/xdisp.c
index 8f352561719..84c75bd91d9 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -3182,7 +3182,8 @@ compute_display_string_pos (struct text_pos *position,
         b = XBUFFER (object);
       if (b == cached_disp_buffer
           && BUF_MODIFF (b) == cached_disp_modiff
-          && BUF_OVERLAY_MODIFF (b) == cached_disp_overlay_modiff)
+          && BUF_OVERLAY_MODIFF (b) == cached_disp_overlay_modiff
+          && !b->clip_changed)
         {
           if (cached_prev_pos >= 0
               && cached_prev_pos < charpos && charpos <= cached_disp_pos)