rb_exit          491 dln.c          	rb_exit(1);
rb_exit          3561 eval.c             rb_exit(istatus);
rb_exit          3575 eval.c         	rb_exit(1);
rb_exit          8351 eval.c             if (th == th->next || th == main_thread) rb_exit(0);
rb_exit          477 signal.c           rb_exit(0);