_POSIX_SAVED_IDS
#if defined(_POSIX_SAVED_IDS) && !defined(BROKEN_SAVED_UIDS)
#ifdef _POSIX_SAVED_IDS
#ifdef _POSIX_SAVED_IDS
#ifdef _POSIX_SAVED_IDS
#ifdef _POSIX_SAVED_IDS
#ifdef _POSIX_SAVED_IDS
#ifdef _POSIX_SAVED_IDS