--- commons-collections-3.2.2-src/src/test/org/apache/commons/collections/collection/AbstractTestCollection.java	2015-11-12 23:25:16.000000000 +0100
+++ commons-collections-3.2.2-src/src/test/org/apache/commons/collections/collection/AbstractTestCollection.java	2018-07-10 14:58:06.116528850 +0200
@@ -1116,7 +1116,7 @@
         verify();
 
         try {
-            array = collection.toArray(null);
+            array = collection.toArray((Object[])null);
             fail("toArray(null) should raise NPE");
         } catch (NullPointerException e) {
             // expected