How to `composite element C++ without add()/insert() etc' functions`

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Hi Experts
I have a C++ template class CompositeElement that contains a field / property CompositeElement** (pointer to pointer). I know that it is not the exact intention of composite to consist a data structure holding multidimensional polymorphic derivations and/or template specializations of itself (name is not the issue in my question).

How can I construct sample instance with 4 levels recursive embedding class sets inside itself (under the CompositeElement** property/field).

I need to solve this without using std::vector / std::set / std::map, just plain C++98 C99 pointers and constructors and assignments. It must be in a shared library ("*.so") specialization workaround on instantiation with dummy function of "*.cpp" file. Construction from client *.cpp file using this library.

some experimental immature I developed


thanks

What I have tried:

developed example .

#ifndef COMPOSITION_LIBRARY_HEADER
#define COMPOSITION_LIBRARY_HEADER

namespace compositionlib{

   template <class T>
   class __attribute__ ((visibility("default"))) CompositeElement{
   public:

      // Default Constructor
      explicit __attribute__ ((visibility("default"))) CompositeElement( );

      // Specialized Template Argument Constructor
      explicit __attribute__ ((visibility("default"))) CompositeElement( T const& payload );

      // Copy Constructor
      explicit __attribute__ ((visibility("default"))) CompositeElement( CompositeElement const& other );

      // Copy Constructor with contents
      explicit __attribute__ ((visibility("default"))) CompositeElement( CompositeElement const& other, T const& payload );

      const std::auto_ptr< T >& getData() const;
      const size_t & getSize() const;

   private:
      
      const size_t m_size;
      const std::auto_ptr<T> m_data;
   public:
      bool m_isCopiedConstructed;
     //  CompositeElement __attribute__ ((visibility("default"))) m_CompositeElementData; incomlete type
      CompositeElement __attribute__ ((visibility("default"))) *m_ptrOfCompositeElementData;
      CompositeElement __attribute__ ((visibility("default"))) **m_setOfCompositeElementData;


   };
}

#endif
//COMPOSITION_LIBRARY_HEADER