Start_item() called on a sequence

UVM
,
6

Although this is an old post , I would like to raise a point here .

From Source Code of uvm_sequence_base Class ::


virtual task start_item (uvm_sequence_item item,
                              int set_priority = -1,
                              uvm_sequencer_base sequencer=null);
       uvm_sequence_base seq;
        
       if(item == null) begin
         uvm_report_fatal("NULLITM",
            {"attempting to start a null item from sequence '",
             get_full_name(), "'"}, UVM_NONE);
         return;
       end
             
       if($cast(seq, item)) begin  // Check if user has passed extended type of uvm_sequence
         uvm_report_fatal("SEQNOTITM",
            {"attempting to start a sequence using start_item() from sequence '",
             get_full_name(), "'. Use seq.start() instead."}, UVM_NONE);
         return;
       end
       ...............

So it would be a Fatal error if start_item() is called on a sequence