--- old/test/hotspot/jtreg/gc/arguments/TestVerifyBeforeAndAfterGCFlags.java	2018-06-06 00:36:23.937495848 +0200
+++ new/test/hotspot/jtreg/gc/arguments/TestVerifyBeforeAndAfterGCFlags.java	2018-06-06 00:36:23.677484651 +0200
@@ -28,6 +28,7 @@
  * @summary Runs an simple application (GarbageProducer) with various
          combinations of -XX:{+|-}Verify{After|Before}GC flags and checks that
          output contain or doesn't contain expected patterns
+ * @requires vm.gc != "Z"
  * @modules java.base/jdk.internal.misc
  * @modules java.management
  * @library /test/lib