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Subject: Re: Corrupt Cygwin64 install?
To: cygwin AT cygwin DOT com
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From: Ken Brown <kbrown AT cornell DOT edu>
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Date: Wed, 21 Sep 2016 18:03:57 -0400
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On 9/21/2016 5:14 PM, Mike McCarty wrote:
> I have cygwin64 installed and up until recently, everything was
> working fine. However, I updated a while back and now I notice that
> emacs doesn't run:
>
> $ which emacs
> /usr/bin/emacs
> $ emacs
> $ emacs --version
> GNU Emacs 25.1.1
> Copyright (C) 2016 Free Software Foundation, Inc.
> GNU Emacs comes with ABSOLUTELY NO WARRANTY.
> You may redistribute copies of GNU Emacs
> under the terms of the GNU General Public License.
> For more information about these matters, see the file named COPYING.
> $ emacs a.txt
>
> It doesn't really crash, it just returns immediately. So I thought I'd
> see what strace reported...
>
> $ strace /usr/bin/emacs
>       0 [main] strace 5196 D:\cygwin64\bin\strace.exe: *** fatal error
> - Internal error: TP_NUM_W_BUFS too small: 50.
>     614 [main] strace 5196 cygwin_exception::open_stackdumpfile:
> Dumping stack trace to strace.exe.stackdump

You can't run strace on a symlink.  Try 'strace /usr/bin/emacs-w32.exe' 
(or whichever emacs binary the symlink resolves to).

Ken


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