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Date:	Wed, 10 Dec 2003 15:16:43 -0600 (CST)
From:	Brian Ford <ford AT vss DOT fsi DOT com>
X-X-Sender:	ford AT eos
To:	Michael Robbert <mrobbert AT mines DOT edu>
cc:	cygwin AT cygwin DOT com
Subject:	Re: Setup hangs in postinstall
In-Reply-To:	<3FD78817.9020806@mines.edu>
Message-ID:	<Pine.GSO.4.58.0312101509290.28297@eos>
References:	<3FD617A6 DOT 8050806 AT mines DOT edu> <3FD6222D DOT 6040702 AT m4x DOT org>
	<3FD77B62 DOT 90909 AT mines DOT edu> <Pine DOT GSO DOT 4 DOT 58 DOT 0312101405310 DOT 28297 AT eos>
	<3FD78817 DOT 9020806 AT mines DOT edu>
MIME-Version:	1.0

On Wed, 10 Dec 2003, Michael Robbert wrote:
> Brian Ford wrote:
> > On Wed, 10 Dec 2003, Michael Robbert wrote:
> >>Everybody,
> >>Some new information I got today. I found another user on our campus
> >>that is having the problem on two different machines, but not a third.
> >>All of them running Windows XP. So far every machine I have seen it on
> >>is running XP and is a recent new install of Cygwin. Does anybody think
> >>that they could get closer to a solution if I were to provide you with a
> >>machine to play with remotely where the problem happens every time?
> >>
> > Why not try to debug it your self?
> >
> Gladly, I just need to know what to do. I'm not a developer, just a
> lowly SysAdmin so I may need some hand holding.
>
> > Have you tried to strace it?
> >
> Yes, I think that this was included in my initial Email. strace produces
>   no output.
>
Sorry, I remember now.

> I have tried attaching to a running/hung one as well as running:
>
By that you mean "strace -p pid_of_hung_process"?  IIRC, "strace -p pid"
is broken in the current release.  You need a newer one to do that.

> strace sh -c TEST=`uname -s`
> Both produced nothing, I suspect that the hang is actually happening
> outside of the sh that I create in the latter.
>
What do you mean by outside of?  That command should produce some output
regardless, even if it is just Cygwin startup stuff *way* before it gets
to the backtick evaluation.

> > Can you get a stack trace of the hang in gdb?  Note: You may need a debug
> > version of the cygwin1.dll or shell for this to be valid.  I will provide
> > the former if you are willing to test it.
> >
> Please provide along with instructions of what to do.
>
Ok, but first have you tried "gdb /bin/sh.exe sh_pid" to get a stack
trace?  If you can't do that, it won't much matter.

-- 
Brian Ford
Senior Realtime Software Engineer
VITAL - Visual Simulation Systems
FlightSafety International
Phone: 314-551-8460
Fax:   314-551-8444

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