1#!/bin/sh
2
3# Must not find us alive
4{ sleep 2; kill -9 $$; } 2>/dev/null &
5
6sleep 1 &
7PID=$!
8
9# We must exit the loop in one second.
10# We had bug 5304: builtins never waited for exited children
11while kill -0 $PID >/dev/null 2>&1; do
12    true
13done
14echo Ok
15