src/hotspot/share/gc/z/zUnload.cpp

   virtual bool is_unloading(CompiledMethod* method) const {
     nmethod* const nm = method->as_nmethod();
     ZReentrantLock* const lock = ZNMethod::lock_for_nmethod(nm);
     ZLocker<ZReentrantLock> locker(lock);
     ZIsUnloadingOopClosure cl;
-    nm->oops_do(&cl, true /* allow_zombie */);
+    ZNMethod::nmethod_oops_do(nm, &cl);
     return cl.is_unloading();
   }
 };
 
 class ZCompiledICProtectionBehaviour : public CompiledICProtectionBehaviour {