rem: exit_status = 1;
add: exit_status = EXIT_FAILURE;
context: verify (const char *s, const char *end){  if (errno)    {      error (0, errno, "%s", s);      exit_status = 1;    }  else if (*end)    {      if (s == end)	error (0, 0, _("%s: expected a numeric value"), s);      else	error (0, 0, _("%s: value not completely converted"), s);      exit_status = 1;    }}