rb_io_wait_readwrite 1803 include/ruby/ruby.h NORETURN(void rb_readwrite_sys_fail(enum rb_io_wait_readwrite, const char*));
rb_io_wait_readwrite 1814 include/ruby/ruby.h NORETURN(void rb_readwrite_syserr_fail(enum rb_io_wait_readwrite, int, const char*));