Index: drc_query.conf
===================================================================
--- drc_query.conf	(revision 34210)
+++ drc_query.conf	(revision 34211)
@@ -142,6 +142,16 @@
 }
 					}
 
+					ha:invalid_polygons {
+						type = polygon
+						title = Invalid polygon
+						desc = Polygon contour is invalid, most probably self intersecting
+						query = {
+rule invalidpoly
+assert @.type == POLYGON && !poly_is_valid(@)
+						}
+					}
+
 				}
 			}
 		}