__set_errno (ENOSYS);
__set_errno (EOPNOTSUPP);
crypt (key, salt)     const char *key;     const char *salt;{  if (strncmp (md5_salt_prefix, salt, sizeof (md5_salt_prefix) - 1) == 0)    return md5_crypt (key, salt);  /* We don't have DES encryption.  */  __set_errno (ENOSYS);  return NULL;}