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Message-ID:	<520D5AA6.2010003@cs.utoronto.ca>
Date:	Thu, 15 Aug 2013 18:48:06 -0400
From:	Ryan Johnson <ryan DOT johnson AT cs DOT utoronto DOT ca>
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To:	cygwin AT cygwin DOT com
Subject:	Re: 64-bit emacs crashes a lot
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In-Reply-To:	<520D4FF7.5040405@cornell.edu>

On 15/08/2013 6:02 PM, Ken Brown wrote:
> On 8/15/2013 5:58 PM, Ken Brown wrote:
>> On 8/15/2013 5:24 PM, Ryan Johnson wrote:
>>> On 15/08/2013 5:14 PM, Ken Brown wrote:
>>>> On 8/15/2013 4:55 PM, Ryan Johnson wrote:
>>>>> Program received signal SIGSEGV, Segmentation fault.
>>>>> ___chkstk_ms () at
>>>>> /usr/src/debug/gcc-4.8.1-1/libgcc/config/i386/cygwin.S:146
>>>>
>>>> You're not using the latest gcc, which is 4.8.1-3.  Any chance that
>>>> that's your problem?
>>> Heh. I actually do have the latest gcc, but somehow the upgrade didn't
>>> pick up the debug package (which showed as not installed in setup.exe).
>>> I have manually upgraded it now.
>>
>> OK.  But doesn't the above show that the crash is occurring in gcc, not
>> emacs?
>>
>>> BTW, how do you compile emacs from the sources given? I tried untarring
>>> and patching, but I get the message:
>>>> configure: error: Emacs hasn't been ported to `x86_64-unknown-cygwin'
>>>> systems.
>>>> Check `etc/MACHINES' for recognized configuration names.
>>
>> One of the patches changes configure.ac, so you have to run autoreconf
>> after applying it.
>
> Or it might be 'autoreconf -I m4'.

Something is still wrong:

$ cd /scratch
$ tar xaf /usr/src/emacs-24.3.tar.xz
$ patch -p1 </usr/src/emacs-24.3-5.cygwin.patch
patching file emacs-24.3/CYGWIN-PATCHES/emacs-X11.postinstall
patching file emacs-24.3/CYGWIN-PATCHES/emacs-X11.preremove
patching file emacs-24.3/CYGWIN-PATCHES/emacs-w32.postinstall
patching file emacs-24.3/CYGWIN-PATCHES/emacs-w32.preremove
patching file emacs-24.3/CYGWIN-PATCHES/emacs.postinstall
patching file emacs-24.3/CYGWIN-PATCHES/emacs.preremove
$ cd emacs-24.3
$ autoreconf -I m4
$ ./configure CFLAGS='-g -0g -fsanitize=address' 
LDFLAGS='-fsanitize=address' --without-all
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking build system type... x86_64-unknown-cygwin
checking host system type... x86_64-unknown-cygwin
configure: error: Emacs hasn't been ported to `x86_64-unknown-cygwin' 
systems.
Check `etc/MACHINES' for recognized configuration names.

In particular, it doesn't look like the patch actually patches any emacs 
files at all... do I need to pull all past versions of the source 
package as well or something?

Ryan


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