--- old/jdk/src/java.base/share/classes/java/lang/StackStreamFactory.java	2016-09-13 13:17:27.000000000 -0700
+++ new/jdk/src/java.base/share/classes/java/lang/StackStreamFactory.java	2016-09-13 13:17:26.000000000 -0700
@@ -71,6 +71,7 @@
     // These flags must match the values maintained in the VM
     @Native private static final int DEFAULT_MODE              = 0x0;
     @Native private static final int FILL_CLASS_REFS_ONLY      = 0x2;
+    @Native private static final int GET_CALLER_CLASS          = 0x4;
     @Native private static final int SHOW_HIDDEN_FRAMES        = 0x20;  // LambdaForms are hidden by the VM
     @Native private static final int FILL_LIVE_STACK_FRAMES    = 0x100;
     /*
@@ -614,9 +615,7 @@
         private Class<?> caller;
 
         CallerClassFinder(StackWalker walker) {
-            super(walker, FILL_CLASS_REFS_ONLY);
-            assert (mode & FILL_CLASS_REFS_ONLY) == FILL_CLASS_REFS_ONLY
-                   : "mode should contain FILL_CLASS_REFS_ONLY";
+            super(walker, FILL_CLASS_REFS_ONLY|GET_CALLER_CLASS);
         }
 
         final class ClassBuffer extends FrameBuffer<Class<?>> {