#!/bin/sh

# Must not find us alive
{ sleep 2; kill -9 $$; } 2>/dev/null &

sleep 1 &
PID=$!

# We must exit the loop in one second.
# We had bug 5304: builtins never waited for exited children
while kill -0 $PID >/dev/null 2>&1; do
    true
done
echo Ok
