the case that the login name cannot be found but no specific error is
provided (this case is hopefully rare but is left open by the POSIX spec).
- See <http://www.opengroup.org/onlinepubs/009695399/functions/getlogin.html>.
+ See <http://www.opengroup.org/susv3xsh/getlogin.html>.
*/
#if !HAVE_DECL_GETLOGIN_R
int getlogin_r (char *name, size_t size);