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Accessing a base test class data element in an extended class.


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Hi ,

I have a basic UVM question,

How can I make base class data elements visible in extended classes?

Any help would be highly appreciated!

I tried declaring the "do_test" as protected too - that should not be needed but it does not work either.

I am missing something very basic here..

class dut_test extends uvm_test;

rand bit do_test;

function new(string name, uvm_component parent=null);


do_test = 1'b0;


//Another function sets this bit



class dut_test_pkt extends dut_test;

//I want to access do_test from the base class in the build portion of this class.

//How do I do it?


//This is what I need to do - use it to constrain another cfg class..

virtual function void build_phase(uvm_phase phase);


assert (cfg.randomize() with {

enable == do_test;



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Hi Dave,

Thanks for the response. I am using ISU 10.20. With it, I get a compile error that "dut_test" is not part of the class.

We have this complex environment of sequencers and agents talking to each other - and they work ok. We tried to do something as simple as this - it failed.

We have since gotten around this by adding another level of encapsulation and using a method to set this signal - not the best but made us go ahead..

I realized that I have one modification to what I posted above,

The hierarchy is as follows:

class test_base extends uvm_test

class dut_test extends test_base

-- dut_test declared here..

class dut_test_pkt extends dut_test

//Goal is to use dut_test here..

Is the problem because "dut_test" is not declared in the base class?

Thanks once again!

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