.. comment: generated by t_param_hier_bad
.. code-block::

   %Error-HIERPARAM: example.v:1:32 Parameter values cannot use hierarchical values (IEEE 1800-2023 6.20.2)
                                               : ... note: In instance 't'
      36 |   localparam int SUB_Y = u_sub.Y;
         |                                ^
