core: Add a static assert to prevent misuse of Create<>() function

Author: Stefano Avallone

src/core/model/ptr.h

@@ -13,6 +13,7 @@
 
 #include <iostream>
 #include <stdint.h>
+#include <type_traits>
 
 /**
  * @file
@@ -427,6 +428,8 @@ struct EventMemberImplObjTraits<Ptr<T>>
 namespace ns3
 {
 
+class Object;
+
 /*************************************************
  *  friend non-member function implementations
  ************************************************/
@@ -435,6 +438,8 @@ template <typename T, typename... Ts>
 Ptr<T>
 Create(Ts&&... args)
 {
+    static_assert(!std::is_base_of_v<Object, T>,
+                  "Use CreateObject() instead of Create() for Object subclasses");
     return Ptr<T>(new T(std::forward<Ts>(args)...), false);
 }