--- xnu/xnu-1504.7.4/libkern/c++/OSMetaClass.cpp
+++ xnu/xnu-1699.22.73/libkern/c++/OSMetaClass.cpp
@@ -491,6 +491,7 @@
 const char *
 OSMetaClass::getClassName() const
 {
+    if (!className) return NULL;
     return className->getCStringNoCopy();
 }