*/
extern Class (*_objc_lookup_class)(const char *name);
+/*
+** This is a hook which is called by __objc_exec_class every time a class
+** or a category is loaded into the runtime. This may e.g. help a
+** dynamic loader determine the classes that have been loaded when
+** an object file is dynamically linked in.
+*/
+extern void (*_objc_load_callback)(Class class, Category* category);
+
extern id (*_objc_object_alloc)(Class class);
extern id (*_objc_object_copy)(id object);