%Error: t/t_struct_packed_init_bad.v:12:17: Initial values not allowed in packed struct/union (IEEE 1800-2023 7.2.2)
                                          : ... note: In instance 't'
   12 |       bit [3:0] m_lo = P;   
      |                 ^~~~
        ... See the manual at https://verilator.org/verilator_doc.html?v=latest for more assistance.
%Error: Exiting due to