Polymorphism

SystemVerilog
,
10

In reply to verif_learner:

class DerivedC extends baseC;
extern virtual function void func1;
extern         function void func2;
endclass

function void DerivedC::func1;
    $display ("func1 in DerivedC");
    func2;   //**here means this.func2, if we use super.func2 then the result will be different**
  endfunction
 
function void DerivedC::func2;
    $display ("func2 in DerivedC");
endfunction
 
BaseC    P1 ;
DerivedC P2 = new;
 
initial begin
  P1 = P2;
  P1.func1;
end

just as the dave said, here use the implicit this class variable, so the result is func2 in DerivedC. I try to use super.func2, the result is func2 in baseC.

thanks
best regards