Overriding virtual functions in parameterized classes

[Erling]

I have a problem with virtual functions being treated as if they were non-virtual in a parameterized class. Consider:

class MyComp #(type T) extends uvm_subscriber #(T);

  function new();
    super.new("", null);
  endfunction
  
  function void f();
    $display("%s", get_type_name());
  endfunction

  function void write(T t);
  endfunction
  
  function string get_type_name();
    return "MyComp#(T)";
  endfunction
  
endclass

class MyOtherComp extends MyComp #(int);

  function string get_type_name();
    return "MyOtherComp";
  endfunction

endclass
  
initial begin
  MyOtherComp c = new();
  c.f();
end

I had hoped this would print "MyOtherComp" since get_type_name() is virtual in uvm_object, but what's printed is "MyComp#(T)". Is this a bug or am I missing something obvious? The compiler is Questa 10.0d.

Erling

[uwes]

hi,

IUS prints "MyOtherComp" - as far as i see thats the correct value

/mfg

[dave_59]

Hi Erling,

This is a reported bug in Questa. It has to do with the interaction of a variety of things and you can contact Mentor for more details. The quick workaround is prefix the call with 'this.' or add the virtual keyword in all derived methods.