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From: "Marcus Van Der Beek" <wasistdast AT hotmail DOT com>
To: cygwin AT cygwin DOT com
Subject: RE: Stability Problem with Cygwin Pthreads
Date: Mon, 03 Nov 2003 00:10:29 +0000
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Message-ID: <Law12-F114XKrvSutTY0000357a@hotmail.com>

Hi Arash,

I've built the cygwin1.dll with debugging info off, and I have
been able to replicate your problem. It seems to be comeing from
inside the string allocator in stl but a more deeper anlysis
shows the problem to be coming from the i386 memcpy, i don't
think the memcpy has been written properly.

Other than that i don't think there is much else anyone other
than the cygwin developers can do to correct this problem.


Other dlls i tested and saw the crash are:

the cygwin1.dll snapshot from the 28th,27th,25th,
the cygwin1.dll from latest release (as of last night)


btw i've noticed a new snapshot just now made on nov 2nd, haven't
tried that out yet, but it seems there have been some changes made
to pthreads.


Marcus


>Can anyone tell me why such a thing would happen and what are the
>fundamental difference between debug mode of cygwin dll and release
>versions other than the obvious debug info and extra asserts that go
>into the dll ?


>Also if possible could people download the ThreadTest source code
>and also download the latest cygwin dll snapshot and tell me if
>they see the test application crash or not, then if you know how
>to build cygwin also download the cygwin source and rebuild the dll
>with debug info and then see if it crashes, also rebuild it without
>debug info and see if it crashes or not.


>If a few people could try this out and give me their results, it
>would help understand what is going wrong with these 3 different
>builds. I hoping to resolve this issue with the help of the cygwin
>community before the next major release.

>Arash

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