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problem on clone


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I met a problem on clone. In my code for scoreboard, I defined a variable as this:

timer_pkt_item chk_pkt;

the timer_pkt_item is defined as a class in other place. I then register it as:


`uvm_field_object(chk_pkt, UVM_DEFAULT)


In my write function for export implementation, I would like to do this:

function void write_pkt(timer_pkt_item rcv_pkt);

chk_pkt = rcv_pkt.clone();


My purpose is to save received data of rcv_pkt.

When I start to compile the code, irun reports error as:

assignment operator type check failed (expecting datatype compatible with 'class timer_pkt_item' but found 'class uvm_object' instead). so what is the problem to the code? I think I have defined the variable type as timer_pkt_item, why there is problem? please give me some help. thanks.

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