%Warning-CASEOVERLAP: t/t_param_scope_bad.v:28:9: Case conditions overlap
   28 |         2'h2: $stop;
      |         ^~~~
                      t/t_param_scope_bad.v:27:9: ... Location of overlapping condition
   27 |         CASEVAL: ;
      |         ^~~~~~~
                      ... For warning description see https://verilator.org/warn/CASEOVERLAP?v=latest
                      ... Use "/* verilator lint_off CASEOVERLAP */" and lint_on around source to disable this message.
%Error: Exiting due to