busybox/shell/ash_test/ash-redir/redir_exec2.tests

cd /proc/$$
exec 5>/dev/null
exec 4>/dev/null
exec 3>/dev/null
ls -1 fd/5
ls -1 fd/4
ls -1 fd/3
exec 5>&-
test -e fd/5 && echo BUG
echo One:$?