--- old/src/hotspot/share/runtime/vmOperations.hpp	2019-08-07 12:43:55.000000000 -0400
+++ new/src/hotspot/share/runtime/vmOperations.hpp	2019-08-07 12:43:55.000000000 -0400
@@ -127,7 +127,7 @@
   template(ScavengeMonitors)                      \
   template(PrintMetadata)                         \
   template(GTestExecuteAtSafepoint)               \
-  template(VTBufferStats)                         \
+  template(ClassPrintLayout)                      \
 
 class VM_Operation: public CHeapObj<mtInternal> {
  public:
@@ -505,6 +505,16 @@
   void doit();
 };
 
+class VM_PrintClassLayout: public VM_Operation {
+ private:
+  outputStream* _out;
+  char* _class_name;
+ public:
+  VM_PrintClassLayout(outputStream* st, char* class_name): _out(st), _class_name(class_name) {}
+  VMOp_Type type() const { return VMOp_PrintClassHierarchy; }
+  void doit();
+};
+
 #if INCLUDE_SERVICES
 class VM_PrintClassHierarchy: public VM_Operation {
  private: