rb_exit            16 dln.c          #define dln_exit rb_exit
rb_exit          1806 include/ruby/ruby.h NORETURN(void rb_exit(int));
rb_exit          3857 process.c          rb_exit(istatus);
rb_exit          3882 process.c      	rb_exit(EXIT_FAILURE);
rb_exit          2240 thread.c       	rb_exit(EXIT_SUCCESS);