T=`mktemp -d ${TMPDIR:-/tmp}/sh-test.XXXXXXXX`
trap 'rm -rf $T' 0
cd $T || exit 3
mkfifo fifo1
# Use a trap, not the default action, since the shell may catch SIGINT and
# therefore its processing may be delayed.
{ set -C; trap 'exit 5' TERM; read dummy <fifo1; exit 4; } &
exec 3>fifo1
kill -INT "$!"
kill -TERM "$!"
exec 3>&-
wait "$!"
r=$?
[ "$r" = 5 ]