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SubjectRe: Hang opening a pipe written to by a child, with SIGCHLD
On Mon, Apr 02, 2012 at 10:49:10AM -0400, Shea Levy wrote:
> On 04/02/2012 10:46 AM, Lluís Batlle i Rossell wrote:
> >Can anyone reproduce this?
> I've reproduced this on my system as well (3.3). No idea about cause though.

Thank you Shea,

with a little change, adding "sleep 0.1" makes it hang early in all (few)
linuces I tried: Let me know if this helps you reproduce the problem.

As before, hangs under strace, does not hang under 'strace -f'. Sorry if I'm
misunderstanding something.

New script:


rm -f $PIPE
mkfifo $PIPE
set -x

spawn() {
sleep 0.1
echo DONE > $PIPE

spawn &

while true; do
while read LINE < $PIPE; do
echo $LINE
spawn &

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