%Error: t/t_pp_circ_subst_bad.v:8:40002: Too many preprocessor tokens on a line (>20000); perhaps recursive `define
        ... See the manual at https://verilator.org/verilator_doc.html?v=latest for more assistance.
%Error: t/t_pp_circ_subst_bad.v:8:5: syntax error, unexpected IDENTIFIER-for-type
%Error: Exiting due to