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Date:	Thu, 23 Jan 2014 11:51:42 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: Maintainer for git?
Message-ID:	<20140123105142.GN2357@calimero.vinschen.de>
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On Jan 22 16:42, Chris O'Bryan wrote:
> > On Mon, Jan 20, 2014 at 5:31 PM, Steven Penny wrote:
> >
> >> Are you certain the bug is present in Adam=E2=80=99s version? He has t=
ested it here
> >>
> >>     http://cygwin.com/ml/cygwin/2014-01/msg00085.html
> >
> > I just tried cloning something big again (the linux kernel). See
> > below. The first one was with git-1.7.9 the default Cygwin version.
> >
> > x86$ git clone https://git.kernel.org/pub/scm/linux/kernel/git/torvalds=
/linux.git
> > linux-git-1.7.9
> > Cloning into 'linux-git-1.7.9'...
> > remote: Counting objects: 3366700, done.
> > remote: Compressing objects: 100% (507909/507909), done.
> > remote: Total 3366700 (delta 2833548), reused 3362709 (delta 2829741)
> > Receiving objects: 100% (3366700/3366700), 705.04 MiB | 3.25 MiB/s, don=
e.
> > Resolving deltas: 100% (2833548/2833548), done.
> >
> > x86$ cd /
> >
> > x86$ tar xf ~/git-1.8.5.2-1.tar.xz
> >
> > x86$ cd
> >
> > x86$ git --version
> > git version 1.8.5.2
> >
> > x86$ git clone https://git.kernel.org/pub/scm/linux/kernel/git/torvalds=
/linux.git
> > linux-git-1.8.5.2
> > Cloning into 'linux-git-1.8.5.2'...
> > remote: Counting objects: 3366700, done.
> > remote: Compressing objects: 100% (508113/508113), done.
> > remote: Total 3366700 (delta 2833563), reused 3362434 (delta 2829537)
> > Receiving objects: 100% (3366700/3366700), 703.64 MiB | 2.16 MiB/s, don=
e.
> > fatal: pack is corrupted (SHA1 mismatch)
> > fatal: index-pack failed
> >
> Could you try rerunning that same clone again with 1.8.5.2, but first
> temporarily replace cygcrypto-1.0.0.dll with a copy of
> cygcrypto-0.9.8.dll ? If it works with the only variable being the
> version of cygcrypto then I think that's pretty strong evidence that
> there is some regression in cygcrypto. It's odd that it is
> intermittent, though. Does anyone know anything about cygcrypto? Are
> there functions that maybe aren't reentrant? The only reasons I can
> think of for it sometimes working are either threading issues, using
> uninitialized memory, or memory corruption (buffer overflow somewhere
> perhaps).

Even if it's an OpenSSL issue, I'm not sure what to do about it.  I'm
building OpenSSL for Cygwin, but I have no knowledge of the crypto
stuff...

I don't see anything unusual in the build process, except, maybe, that
for SHA1 the x86 assembler code is used.  I'm wondering what happens
when taking out -DSHA1_ASM from the build process.  Or what happens when
using -O2 instead of -O3.


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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