Include bounds check in CursorMove validity

2011-10-13 03:39:16 -04:00
parent f0e211a971
commit daf7d44684
1 changed files with 5 additions and 0 deletions
@@ -55,6 +55,11 @@ void CursorMove::apply( Framebuffer &fb ) const

 Validity ConditionalCursorMove::get_validity( const Framebuffer &fb ) const
 {
+  if ( (new_row >= fb.ds.get_height())
+       || (new_col >= fb.ds.get_width()) ) {
+    return IncorrectOrExpired;
+  }
+
  if ( timestamp() < expiration_time ) {
    return Pending;
  }