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Date: Fri, 22 Aug 2003 13:28:51 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: It's a snapshot
Message-ID: <20030822112851.GP7858@cygbert.vinschen.de>
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References: <20030822075537 DOT GB32665 AT cygbert DOT vinschen DOT de> <E19q8zE-0005U2-00 AT russ DOT local>
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On Fri, Aug 22, 2003 at 06:17:40AM -0400, Russell O'Connor wrote:
> Corinna Vinschen writes:
> > It's a border case.  I don't know if it's worth to wait for the fix.
> > It would be nice if I could reproduce it under a debugger :-(
> 
> If you are referring to "malloc returns overlapping buffers", I was
> able to get it to fail under the debugger by increasing the malloc
> size in the test case from 8000 to 16000.  It then segfaults instead
> of returning overlapping buffers, but that's presumably a bug too, and
> likely a different manifestation of the same bug.
> 
> I know that the stack trace for that case in my original post was not
> too useful because there was no debugging information in the cygwin
> dll, but I've since built cygwin from CVS and gotten a proper stack
> trace.  Unfortunately, it's at work and I won't be back there till
> Monday.  But if it would be useful to you I'll make an extra trip in.

Thanks for the offer but that's probably not necessary.  I could
already find a workaround (not a solution, though).  It looks like
you're right with your suspicion that mmap using malloc somehow
messes up things but this needs further debugging.

Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                                mailto:cygwin AT cygwin DOT com
Red Hat, Inc.

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