Member utilmm::demangle (char const *name): this function is not currently fully implemented. It is based on g++ ABI and uses g++ internals. Finally there's no error treatment at this time.
Member utilmm::smart::ref_count::simple_memory< Ty >::create (base_type *ptr): If the same pointer is passed more than one time to this function there's no control to return a mem_cell with the good reference counter.