Hi,
we've found that ksh can fail to read file it should create with previous
command. This occurs even when the file
creation is inside parentheses and the access occurs outside the parentheses.
Reproducer:
#!/bin/ksh
n=0
TEErc=Trcfile
while [ $n -lt 1000 ]
do
echo $n
>$TEErc
(ls /tmp > /dev/null 2>&1; echo $? >$TEErc) | tee -a junk
rc=$(<$TEErc)
if [ -z "$rc" ]
then
echo hit the bug, rc is empty
ls -l $TEErc
sync
sleep 1
echo after sleep and sync
ls -l $TEErc
exit
fi
rm $TEErc
n=$(expr $n + 1)
done
rm junk
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