There is, at the mq_open/16-1.test, fork() and next
succeeded++; in child want to update parent's
The test was measure if parent was execute before
child, but on almost all archs it is true, on ia64
with HT no always.
Now the test measure that, what author means, data
from child to parent goes via return value.
I have ran the test 6850 times without fail on ia64
HT. In approx 27% was child executed before parent.