rb_define_class_id 208 class.c            klass = rb_define_class_id(id, super);
rb_define_class_id 239 class.c            klass = rb_define_class_id(id, super);
rb_define_class_id 3324 eval.c         		klass = rb_define_class_id(node->nd_cname, super);
rb_define_class_id 739 ext/strscan/strscan.c         ScanError = rb_define_class_id(id_scanerr, rb_eStandardError);