Date: Tue, 13 Feb 2024 19:58:51 +0100
To: Kevin Ushey <kevinushey@gmail.com>
Subject: Re: Cygwin installer hangs when running post-install scripts
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From: Corinna Vinschen via Cygwin <cygwin@cygwin.com>
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Cc: Corinna Vinschen <corinna-cygwin@cygwin.com>, cygwin@cygwin.com
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On Feb 13 10:01, Kevin Ushey via Cygwin wrote:
> On Tue, Feb 13, 2024 at 8:25 AM Corinna Vinschen wrote:
> > On Feb 13 11:09, Corinna Vinschen via Cygwin wrote:
> > > Other than that, the only thing you really could do at this point is to
> > > check Cygwin's find_fast_cwd_pointer() function and go through this
> > > function step by step, diving into the assembler code this function
> > > inspects trying to find out which of the memmem calls fails and how to
> > > fix it.  And send a patch eventually.
> > > [...]
> > > One thing we can do is to skip the find_fast_cwd_pointer() code entirely
> > > when running on AArch64, but it's a bit annoying, given this wasn't
> > > necessary in previous AArch64 builds.
> >
> > I've just pushed a (temporary?) patch to do just that.  This will be
> > in the test build cygwin-3.6.0-0.37.g4e77fa9b8bf4 which will be
> > installable via Cygwin's installer in an hour or two.
> 
> Thank you for taking a look so quickly -- I can confirm your patch
> fixes things for me; the installer now runs to completion and the
> Cygwin64 Terminal + other installed tools all function correctly.

Thanks for confirming.  However, if you see *any* chance to check
Cygwin's find_fast_cwd_pointer() pointer function and try to find
out why it crashes, that would be very helpful.


Corinna

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