%Error: t/t_class_assign_bad.v:28:9: Assign RHS expects a CLASSREFDTYPE 'Cls', got BASICDTYPE 'logic'
                                   : ... In instance t
   28 |       c = 0;
      |         ^
%Error: t/t_class_assign_bad.v:29:9: Assign RHS expects a CLASSREFDTYPE 'Cls', got BASICDTYPE 'logic'
                                   : ... In instance t
   29 |       c = 1;
      |         ^
%Error: t/t_class_assign_bad.v:30:9: Assign RHS expects a CLASSREFDTYPE 'Cls', got CLASSREFDTYPE 'Cls2'
                                   : ... In instance t
   30 |       c = c2;
      |         ^
%Error: t/t_class_assign_bad.v:31:13: Assign RHS expects a CLASSREFDTYPE 'ClsExt', got CLASSREFDTYPE 'Cls'
                                    : ... In instance t
   31 |       c_ext = c;
      |             ^
%Error: t/t_class_assign_bad.v:32:11: Assign RHS expects a CLASSREFDTYPE 'Cls2', got CLASSREFDTYPE 'Cls'
                                    : ... In instance t
   32 |       ct2 = c;
      |           ^
%Error: t/t_class_assign_bad.v:34:7: Function Argument expects a CLASSREFDTYPE 'Cls', got BASICDTYPE 'logic'
                                   : ... In instance t
   34 |       t(0);
      |       ^
%Error: t/t_class_assign_bad.v:35:7: Function Argument expects a CLASSREFDTYPE 'Cls', got BASICDTYPE 'logic'
                                   : ... In instance t
   35 |       t(1);
      |       ^
%Error: t/t_class_assign_bad.v:36:7: Function Argument expects a CLASSREFDTYPE 'Cls', got CLASSREFDTYPE 'Cls2'
                                   : ... In instance t
   36 |       t(c2);
      |       ^
%Error: t/t_class_assign_bad.v:37:7: Function Argument expects a CLASSREFDTYPE 'ClsExt', got CLASSREFDTYPE 'Cls'
                                   : ... In instance t
   37 |       f(c);
      |       ^
%Error: Exiting due to