rb_obj_init_dup_clone 1710 object.c           ret = rb_obj_init_dup_clone(clone, orig);
rb_obj_init_dup_clone 3431 object.c           rb_define_method(rb_mKernel, "initialize_dup", rb_obj_init_dup_clone, 1);
rb_obj_init_dup_clone 3432 object.c           rb_define_method(rb_mKernel, "initialize_clone", rb_obj_init_dup_clone, 1);