%Warning-VARHIDDEN: t/t_var_bad_hide.v:16:14: Declaration of signal hides declaration in upper scope: 'top'
   16 |       output top;
      |              ^~~
                    t/t_var_bad_hide.v:13:12: ... Location of original declaration
   13 |    integer top;
      |            ^~~
                    ... For warning description see https://verilator.org/warn/VARHIDDEN?v=latest
                    ... Use "/* verilator lint_off VARHIDDEN */" and lint_on around source to disable this message.
%Warning-VARHIDDEN: t/t_var_bad_hide.v:22:18: Declaration of signal hides declaration in upper scope: 'top'
   22 |          integer top;
      |                  ^~~
                    t/t_var_bad_hide.v:13:12: ... Location of original declaration
   13 |    integer top;
      |            ^~~
%Error: Exiting due to