On Mon, Apr 02, 2012 at 03:29:33PM -0400, Greg Wooledge wrote:
> On Mon, Apr 02, 2012 at 08:46:12PM +0200, Lluís Batlle i Rossell wrote:
> > #!/bin/sh
>
> You're running this in sh? But reporting it as a bug in bash?
In that case, sh points to bash. Sorry for the confusion I could have caused.
On Mon, Apr 02, 2012 at 08:46:12PM +0200, Lluís Batlle i Rossell wrote:
> #!/bin/sh
You're running this in sh? But reporting it as a bug in bash?
> PIPE=/tmp/pipe
>
> rm -f $PIPE
> mkfifo $PIPE
> set -x
>
> spawn() {
> sleep 0.1
> echo DONE > $PIPE
> }
>
> spawn &
>
> while true; do
On Mon, Apr 02, 2012 at 04:39:19PM +0200, Lluís Batlle i Rossell wrote:
> Trying to reproduce the race, I got rid of 'sleep', and expected this to never
> hang. But it hangs where I try. Should I submit this to LKML maybe?
>
> I think it should not hang ever, but maybe I forecast something bad.
>
On Sun, Apr 01, 2012 at 06:27:46PM -0400, Chet Ramey wrote:
> On 4/1/12 1:02 PM, Lluís Batlle i Rossell wrote:
> > On Sun, Apr 01, 2012 at 11:06:22AM -0400, Chet Ramey wrote:
> >> On 4/1/12 5:53 AM, Andreas Schwab wrote:
> >>
> It looks like a simple race condition. I suspect that the schedul
On Sun, Apr 01, 2012 at 06:27:46PM -0400, Chet Ramey wrote:
> On 4/1/12 1:02 PM, Lluís Batlle i Rossell wrote:
> > On Sun, Apr 01, 2012 at 11:06:22AM -0400, Chet Ramey wrote:
> >> On 4/1/12 5:53 AM, Andreas Schwab wrote:
> >>
> It looks like a simple race condition. I suspect that the schedul
On 4/1/12 1:02 PM, Lluís Batlle i Rossell wrote:
> On Sun, Apr 01, 2012 at 11:06:22AM -0400, Chet Ramey wrote:
>> On 4/1/12 5:53 AM, Andreas Schwab wrote:
>>
It looks like a simple race condition. I suspect that the scheduler
arranges things so that the child process ends up exiting betw
On Sun, Apr 01, 2012 at 11:06:22AM -0400, Chet Ramey wrote:
> On 4/1/12 5:53 AM, Andreas Schwab wrote:
>
> >> It looks like a simple race condition. I suspect that the scheduler
> >> arranges things so that the child process ends up exiting between the
> >> open and the read, but I don't have any
On 4/1/12 5:53 AM, Andreas Schwab wrote:
>> It looks like a simple race condition. I suspect that the scheduler
>> arranges things so that the child process ends up exiting between the
>> open and the read, but I don't have any real evidence to back it up.
>
> Note that the opening of the pipe a
On Sun, Apr 01, 2012 at 11:53:12AM +0200, Andreas Schwab wrote:
> Chet Ramey writes:
>
> > On 3/31/12 9:19 AM, Lluís Batlle i Rossell wrote:
> >> Hello,
> >>
> >> I have this script, that I've found to never write "DONE" in my systems,
> >> with
> >> bash 4.0, 4.1, 4.2.. until 4.2-p20, my last
Chet Ramey writes:
> On 3/31/12 9:19 AM, Lluís Batlle i Rossell wrote:
>> Hello,
>>
>> I have this script, that I've found to never write "DONE" in my systems, with
>> bash 4.0, 4.1, 4.2.. until 4.2-p20, my last test.
>>
>> However, in irc some people told me it prints DONE for them. If I run t
On Sat, Mar 31, 2012 at 09:16:20PM -0400, Chet Ramey wrote:
> On 3/31/12 9:19 AM, Lluís Batlle i Rossell wrote:
> > Hello,
> >
> > I have this script, that I've found to never write "DONE" in my systems,
> > with
> > bash 4.0, 4.1, 4.2.. until 4.2-p20, my last test.
> >
> > However, in irc some
On 3/31/12 9:19 AM, Lluís Batlle i Rossell wrote:
> Hello,
>
> I have this script, that I've found to never write "DONE" in my systems, with
> bash 4.0, 4.1, 4.2.. until 4.2-p20, my last test.
>
> However, in irc some people told me it prints DONE for them. If I run the
> script with
> bash unde
Hello,
I have this script, that I've found to never write "DONE" in my systems, with
bash 4.0, 4.1, 4.2.. until 4.2-p20, my last test.
However, in irc some people told me it prints DONE for them. If I run the
script with
bash under 'strace -f', it also prints DONE.
So there is some kind of race
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