class B;
virtual
task print();
$display(" CLASS B ");
endtask
endclass
class E_1 extends B;
virtual
task print();
$display(" CLASS E_1 ");
endtask
endclass
class E_2 extends B;
virtual
task print();
$display(" CLASS E_2 ");
endtask
endclass
module main;
initial
begin
B b;
E_1 e1;
E_2 e2;
e1 = new();
$cast(e2,e1);
end
endmodule
Casting of source class type ‘E_1’ to destination class type ‘E_2’ failed
due to type mismatch.
Please ensure matching types for dynamic cast
Can anyone please explain clearly