1 files changed, 3 insertions, 0 deletions
diff --git a/sql/spatial.h b/sql/spatial.h
index 6850cc804d0..1108f5d5e50 100644
--- a/sql/spatial.h
+++ b/sql/spatial.h
@@ -199,6 +199,9 @@ struct MBR
 
     return (d == intersection.dimension());
   }
+
+  int valid() const
+  { return xmin <= xmax && ymin <= ymax; }
 };