rb_exit           460 dln.c          	rb_exit(1);
rb_exit           959 include/ruby/ruby.h NORETURN(void rb_exit(int));
rb_exit          2520 process.c          rb_exit(istatus);
rb_exit          2546 process.c      	rb_exit(EXIT_FAILURE);
rb_exit           759 ruby.c         	    rb_exit(EXIT_SUCCESS);
rb_exit          1006 ruby.c         		rb_exit(EXIT_SUCCESS);
rb_exit          1392 thread.c       	rb_exit(EXIT_SUCCESS);