busybox/shell/ash_test/ash-signals/signal7.tests
Alexander Shishkin ccb9771861 ash: fix $! value when traps are set
Signed-off-by: Alexander Shishkin <virtuoso@slind.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-07-25 13:07:39 +02:00

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bug() {
trap : exit
# Bug was causing sh to be run in subshell,
# as if this line is replaced with (sh -c ...; exit $?) &
# here:
sh -c 'echo REAL_CHILD=$$' &
echo PARENTS_IDEA_OF_CHILD=$!
wait # make sure bkgd shell completes
}
bug | {
while read varval; do
eval $varval
done
test x"$REAL_CHILD" != x"" \
&& test x"$REAL_CHILD" = x"$PARENTS_IDEA_OF_CHILD"
echo "Bug detected: $?"
}