posix2time
time_t posix2time(time_t) __RENAME(__posix2time50);
int32_t posix2time(int32_t);
__weak_alias(posix2time,_posix2time)
__warn_references(posix2time,
# if TZ_TIME_T || !defined posix2time
time_t posix2time(time_t);