pwcache_userdb
int pwcache_userdb(int (*)(int), void (*)(void),
__warn_references(pwcache_userdb,
__weak_alias(pwcache_userdb, _pwcache_userdb)
int pwcache_userdb(int (*)(int), void (*)(void),
pwcache_userdb(setpassent, test_getpwnam, getpwuid));
pwcache_userdb(NULL, NULL, NULL));
int pwcache_userdb(int (*)(int), void (*)(void),
|| pwcache_userdb(gi_setpassent, gi_endpwent,