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Date: Mon, 11 Jul 2022 10:16:16 +0200
From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: [EXTERNAL] Re: Spurious / persistent "exception" condition in
 half-closed sockets
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On Jul 11 09:52, Corinna Vinschen wrote:
> On Jul  9 23:02, Lavrentiev, Anton (NIH/NLM/NCBI) [C] via Cygwin wrote:
> > > This was fixed in Cygwin 3.3.0, as the announcement of the latter stated:
> > 
> > Thanks!  So maybe it is time to upgrade... after all LOL
> > 
> > > But you can still run a parallel Cygwin installation
> > 
> > I tried that before...  And it did not work out well.  Unless it's a VM,
> > there's a small but real chance that at some point they are to get intertwined,
> 
> This must have been very long ago.  For a long time, Cygwin's path
> handling and shared memory interaction between Cygwin processes is
> based on the installation path of the Cygwin DLL a process is running
> under.  A Cygwin process running under a Cygwin DLL from path A uses
> different default Windows PATH and different shared memory names than a

make that "different names for all shared objects"

> process running under Cygwin DLL from path B.  Keeping Cygwin
> installations separate just requires never to run processes from
> installation A under Cygwin DLL B.
> 
> 
> > and then ... it's quite a mess (learned that the hard way, unfortunately).
> 
> It really isn't.  Only if you start to mix paths from two parallel
> Cygwin installations inside the same shell session, which should be
> easy to avoid.
> 
> 
> Corinna

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