i=1
r=0
while [ $i -lt $((0x100000000)) ]; do
	t=
	eval t=\${$i-x}
	case $t in
	x) ;;
	*) echo "Problem with \${$i}" >&2; r=1 ;;
	esac
	i=$((i + 0x10000000))
done
exit $r