src/hotspot/share/classfile/classLoaderHierarchyDCmd.cpp

klass is_unloading no cache

   }
 
   void do_cld (ClassLoaderData* cld) {
 
     // We do not display unloading loaders, for now.
-    if (cld->is_unloading()) {
+    if (!cld->is_alive()) {
       return;
     }
 
     const oop loader_oop = cld->class_loader();