--- old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.test/src/org/graalvm/compiler/test/JLModule.java	2017-04-28 11:49:05.000000000 +0200
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.test/src/org/graalvm/compiler/test/JLModule.java	2017-04-28 11:49:04.000000000 +0200
@@ -96,6 +96,7 @@
         }
     }
 
+    @SuppressWarnings("unchecked")
     public Set<String> getPackages() {
         try {
             return (Set<String>) getPackagesMethod.invoke(realModule);