--- old/test/gc/arguments/TestObjectTenuringFlags.java	2015-08-18 16:24:13.041799485 -0700
+++ new/test/gc/arguments/TestObjectTenuringFlags.java	2015-08-18 16:24:12.937799487 -0700
@@ -157,7 +157,7 @@
     if (tenuringFlags.length > 0) {
       Collections.addAll(vmOpts, tenuringFlags);
     }
-    Collections.addAll(vmOpts, "-XX:+PrintFlagsFinal", "-version");
+    Collections.addAll(vmOpts, "-XX:+UseParallelGC", "-XX:+PrintFlagsFinal", "-version");
 
     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(vmOpts.toArray(new String[vmOpts.size()]));
     OutputAnalyzer output = new OutputAnalyzer(pb.start());