set -e

T=$(mktemp -d ${TMPDIR:-/tmp}/sh-test.XXXXXX)
trap 'rm -rf "$T"' 0
cd $T
mkfifo fifo1
# Open fifo1 for writing and then read block on a dummy fifo
{ mkfifo fifo2; read dummy <fifo2; } >fifo1 &
# Wait for the child to open fifo1 for writing
exec 3<fifo1
v=original_value
r=0
read -t 0 v <&3 || r=$?
kill -TERM "$!" || :
{ [ "$r" -gt 128 ] && [ "$(kill -l "$r")" = ALRM ]; } || exit
[ -z "$v" ]