%Error-UNSUPPORTED: t/t_class_static.v:25:18: Unsupported: 'static' function/task variables
                                            : ... In instance t
   25 |       static int st = 2; st++; return st;
      |                  ^~
                    ... For error description see https://verilator.org/warn/UNSUPPORTED?v=latest
%Error: Exiting due to