%Error: t/t_constraint_pure_missing_bad.v:11:1: Class 'Cls' extends 'Base' but is missing constraint implementation for 'raint' (IEEE 1800-2023 18.5.2)
   11 | class Cls extends Base;
      | ^~~~~
        t/t_constraint_pure_missing_bad.v:8:21: ... Location of interface class's pure constraint
    8 |     pure constraint raint;
      |                     ^~~~~
        ... See the manual at https://verilator.org/verilator_doc.html?v=latest for more assistance.
%Error: Exiting due to