%Error: t/t_func_nansi_dup_bad.v:14:9: Duplicate declaration of signal: 'bad4'
   14 |     reg bad4;   
      |         ^~~~
        t/t_func_nansi_dup_bad.v:12:17: ... Location of original declaration
   12 |     input [7:0] bad4;
      |                 ^~~~
        ... See the manual at https://verilator.org/verilator_doc.html?v=latest for more assistance.
%Error: t/t_func_nansi_dup_bad.v:19:17: Duplicate declaration of signal: 'bad5'
   19 |     input [7:0] bad5;   
      |                 ^~~~
        t/t_func_nansi_dup_bad.v:18:17: ... Location of original declaration
   18 |     input [7:0] bad5;
      |                 ^~~~
%Error: Exiting due to