--- old/src/hotspot/share/gc/z/zNMethodTable.hpp	2019-02-20 21:52:16.627945664 +0100
+++ new/src/hotspot/share/gc/z/zNMethodTable.hpp	2019-02-20 21:52:16.035935579 +0100
@@ -30,6 +30,8 @@
 #include "gc/z/zNMethodTableEntry.hpp"
 #include "memory/allocation.hpp"
 
+class ZNMethodData;
+class ZNMethodDataOops;
 class ZWorkers;
 
 class ZNMethodClosure {
@@ -43,7 +45,6 @@
   static size_t              _size;
   static ZNMethodTableEntry* _iter_table;
   static size_t              _iter_table_size;
-  static ZArray<void*>       _iter_deferred_deletes;
   static size_t              _nregistered;
   static size_t              _nunregistered;
   static volatile size_t     _claimed ATTRIBUTE_ALIGNED(ZCacheLineSize);
@@ -66,8 +67,6 @@
   static void log_unregister(const nmethod* nm);
 
 public:
-  static void safe_delete(void* data);
-
   static size_t registered_nmethods();
   static size_t unregistered_nmethods();