--- old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/nodes/type/KlassPointerStamp.java	2019-03-12 08:09:19.343467790 +0100
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/nodes/type/KlassPointerStamp.java	2019-03-12 08:09:18.971465374 +0100
@@ -72,6 +72,13 @@
     }
 
     @Override
+    public void accept(Visitor v) {
+        super.accept(v);
+        v.visitLong(encoding.getBase());
+        v.visitInt(encoding.getShift());
+    }
+
+    @Override
     protected AbstractPointerStamp copyWith(boolean newNonNull, boolean newAlwaysNull) {
         return new KlassPointerStamp(newNonNull, newAlwaysNull, encoding);
     }