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Subject:	Re: [h-e-w] cygwin-64 2.3.1. bash fails when running under FSF emacs 24.5
To:	Eli Zaretskii <eliz AT gnu DOT org>, Dominique de Waleffe <ddewaleffe AT gmail DOT com>
References:	<834mgax9lj DOT fsf AT gnu DOT org> <20151126135158 DOT GO2755 AT calimero DOT vinschen DOT de> <CAJVzMuVgWbTer8z4xT00_Uh6asKGvLVqrm2W2cK_6pDUMxJgLg AT mail DOT gmail DOT com> <87bnag4p58 DOT fsf AT Rainer DOT invalid> <CAJVzMuVMkTza1hdJK0p1rr2_FQbizRV3PBnQmwUh+_bsqKpeWw AT mail DOT gmail DOT com> <CAJVzMuVku4kqRxEnnFEE+=CXyfYG1kb8aSS9x5qRSkiN_rkJcQ AT mail DOT gmail DOT com> <83k2p3ucdi DOT fsf AT gnu DOT org>
Cc:	cygwin AT cygwin DOT com, help-emacs-windows AT gnu DOT org
From:	Ken Brown <kbrown AT cornell DOT edu>
Message-ID:	<565F1D17.8050505@cornell.edu>
Date:	Wed, 2 Dec 2015 11:32:23 -0500
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On 11/27/2015 2:31 AM, Eli Zaretskii wrote:
>> Date: Thu, 26 Nov 2015 22:20:18 +0100
>> From: Dominique de Waleffe <ddewaleffe AT gmail DOT com>
>>
>> So... started my homework... Got fresh w10 vm, put cygwin64 and both
>> versions of emacs 24.4 and 24.5 from fsf ftp onto it....
>>
>> And trying to start bash as shell fails under both  versions!
>>
>> => I was mistaken in the origin of my instance of 24.4 (it must have
>> come from another source, and I do not remember which)....
>>       It says: GNU Emacs 24.4.1 (x86_64-w64-mingw32)  of 2014-10-21 on KAEL
>>
>> => both versions from fsf ftp appear to be compiled using mingw
>>       GNU Emacs 24.5.1 (i686-pc-mingw32) of 2015-04-11 on LEG570
>>       GNU Emacs 24.4.1 (i686-pc-mingw32) of 2014-10-24 on LEG570
>>
>> So the difference seems to be in the difference of mingw compilation mode.
>>
>> That's as far as I got tonight. Maybe someone has knowledge to share
>> about the cause and what to do about this?
>
> I'd say this is somehow related to 64-bit Cygwin programs being run by
> 32-bit native Windows programs.  The version which works for you is a
> 64-bit executable, those that don't are 32-bit.

Just to follow up on this for the sake of the archives, Eli is correct 
(no surprise).  The problem seems to be a result of recent changes to 
Windows 10, and Corinna is working on a fix.  See

   https://www.cygwin.com/ml/cygwin/2015-12/msg00003.html

Ken

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