QThread can't work after set the system time

QThread can't work after set the system time
if you set the system time(just time not date, set earlier) during calling QThread's function msleep or sleep;The function can't wake up as you want.
I found that it uses the realclock(gettimeofday) to implement sleep. It will Affects the
result if user set system time.
I think it needed to use clock_gettime(CLOCK_MONOTONIC, &timeout) instead.
You can check this problem in other version too.