Looking at the uvm base classes, I noticed uvm_sequence_item method get_type_name is not defined as virtual. That means if I have a derived class that is downcasted to uvm_sequence_item handle, then get_type_name call on this handle will return wrong value ?
get_type_name is virtual in 1.2. Here is an excerpt of the source code of uvm_object:
virtual function string get_type_name (); return "<unknown>"; endfunction
get_type_name is not overridden in uvm_sequence_item. (So where are you getting your information?) Even if it were, you do not have to label a method as virtual if the base-class method is virtual.