a_uid
(uid = a_uid(*argv, 1)) == (uid_t)-1) {
uid = a_uid(*argv, 0);
uid_t a_uid(const char *, int);
uid_t a_uid(char *);
args.uid = a_uid(optarg);
static uid_t a_uid(char *);
args.uid = a_uid(optarg);
uid = a_uid(optarg);
static uid_t a_uid(const char *);