Ticket #22634: relation_sort.diff

src/org/openstreetmap/josm/gui/dialogs/relation/sort/RelationSorter.java

@@ -199 +199 @@
      * @since 17862 (signature change, generics)
      */
     public static <T extends IRelationMember<? extends IPrimitive>> List<T> sortMembersByConnectivity(List<T> defaultMembers) {
+        // sort incoming relation members in order to ensure that sorting
+        // multiple times always produces the same order
+        // (the output order is dependent on the input order)
+        defaultMembers.sort((o1, o2) -> {
+            return Integer.compare(o1.hashCode(), o2.hashCode());
+        });
+
         List<T> newMembers;
 
         RelationNodeMap<T> map = new RelationNodeMap<>(defaultMembers);