%Warning-CONSTRAINTIGN: t/t_constraint_mode.v:16:12: constraint_mode ignored (unsupported)
                                                   : ... note: In instance 't'
   16 |       cons.constraint_mode(1);
      |            ^~~~~~~~~~~~~~~
                        ... For warning description see https://verilator.org/warn/CONSTRAINTIGN?v=latest
                        ... Use "/* verilator lint_off CONSTRAINTIGN */" and lint_on around source to disable this message.
%Warning-CONSTRAINTIGN: t/t_constraint_mode.v:17:12: constraint_mode ignored (unsupported)
                                                   : ... note: In instance 't'
   17 |       cons.constraint_mode(0);
      |            ^~~~~~~~~~~~~~~
%Warning-CONSTRAINTIGN: t/t_constraint_mode.v:18:16: constraint_mode ignored (unsupported)
                                                   : ... note: In instance 't'
   18 |       if (cons.constraint_mode() != 0) $stop;
      |                ^~~~~~~~~~~~~~~
%Warning-CONSTRAINTIGN: t/t_constraint_mode.v:40:9: Unsupported: 'constraint_mode' called on object
                                                  : ... note: In instance 't'
   40 |       p.constraint_mode(0);
      |         ^~~~~~~~~~~~~~~
%Warning-CONSTRAINTIGN: t/t_constraint_mode.v:41:9: Unsupported: 'constraint_mode' called on object
                                                  : ... note: In instance 't'
   41 |       p.constraint_mode(1);
      |         ^~~~~~~~~~~~~~~
%Warning-CONSTRAINTIGN: t/t_constraint_mode.v:46:14: constraint_mode ignored (unsupported)
                                                   : ... note: In instance 't'
   46 |       p.cons.constraint_mode(1);
      |              ^~~~~~~~~~~~~~~
%Warning-CONSTRAINTIGN: t/t_constraint_mode.v:47:14: constraint_mode ignored (unsupported)
                                                   : ... note: In instance 't'
   47 |       p.cons.constraint_mode(0);
      |              ^~~~~~~~~~~~~~~
%Warning-CONSTRAINTIGN: t/t_constraint_mode.v:48:18: constraint_mode ignored (unsupported)
                                                   : ... note: In instance 't'
   48 |       if (p.cons.constraint_mode() != 0) $stop;
      |                  ^~~~~~~~~~~~~~~
%Warning-CONSTRAINTIGN: t/t_constraint_mode.v:53:20: constraint_mode ignored (unsupported)
                                                   : ... note: In instance 't'
   53 |       p.other.cons.constraint_mode(1);
      |                    ^~~~~~~~~~~~~~~
%Warning-CONSTRAINTIGN: t/t_constraint_mode.v:54:20: constraint_mode ignored (unsupported)
                                                   : ... note: In instance 't'
   54 |       p.other.cons.constraint_mode(0);
      |                    ^~~~~~~~~~~~~~~
%Warning-CONSTRAINTIGN: t/t_constraint_mode.v:55:24: constraint_mode ignored (unsupported)
                                                   : ... note: In instance 't'
   55 |       if (p.other.cons.constraint_mode() != 0) $stop;
      |                        ^~~~~~~~~~~~~~~
%Error: Exiting due to