* src/syntax.c (back_comment): Fix off-by-one error.

Fixes: debbugs:18022

2 files changed, 5 insertions, 1 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 0b2f511d61f..a812fd4a771 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,7 @@
+2014-11-06  Alan Mackenzie  <acm@muc.de>
+
+        * syntax.c (back_comment): Fix off-by-one error (bug#18022).
+
 2014-11-06  Dima Kogan  <dima@secretsauce.net>
 
         * xgselect.c (xg_select): Use g_main_context_acquire (bug#18861).
diff --git a/src/syntax.c b/src/syntax.c
index 5e697d350ff..760f03c6b69 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -825,7 +825,7 @@ back_comment (ptrdiff_t from, ptrdiff_t from_byte, ptrdiff_t stop,
     {
       from = comment_end;
       from_byte = comment_end_byte;
-      UPDATE_SYNTAX_TABLE_FORWARD (comment_end - 1);
+      UPDATE_SYNTAX_TABLE_FORWARD (comment_end);
     }
   /* If comstart_pos is set and we get here (ie. didn't jump to `lossage'
      or `done'), then we've found the beginning of the non-nested comment.  */