if (result == 0 || errno != ENOSYS)
if (result != -1 || errno != ENOSYS)
__getgroups (int n, gid_t *groups){#if __ASSUME_32BITUIDS > 0  return INLINE_SYSCALL (getgroups32, 2, n, CHECK_N (groups, n));#else  if (__builtin_expect (n, 1) < 0)    {      __set_errno (EINVAL);      return -1;    }  else    {      int i, ngids;      __kernel_gid_t kernel_groups[n = MIN (n, __sysconf (_SC_NGROUPS_MAX))];# ifdef __NR_getgroups32      if (__libc_missing_32bit_uids <= 0)	{	  int result;	  int saved_errno = errno;	  result = INLINE_SYSCALL (getgroups32, 2, n, CHECK_N (groups, n));	  if (result == 0 || errno != ENOSYS)	    return result;	  __set_errno (saved_errno);	  __libc_missing_32bit_uids = 1;	}# endif /* __NR_getgroups32 */      ngids = INLINE_SYSCALL (getgroups, 2, n, CHECK_N (kernel_groups, n));      if (n != 0 && ngids > 0)	for (i = 0; i < ngids; i++)	  (__ptrvalue (groups))[i] = kernel_groups[i];      return ngids;    }#endif}