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Message-ID:	<520D5F29.1040307@cornell.edu>
Date:	Thu, 15 Aug 2013 19:07:21 -0400
From:	Ken Brown <kbrown AT cornell DOT edu>
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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:	<520D5AA6.2010003@cs.utoronto.ca>

On 8/15/2013 6:48 PM, Ryan Johnson wrote:
> 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?

The source package for emacs-24.3-5 contains lots of patches that you 
didn't apply:

	nox_mouse.patch
	w32_encoding.patch
	configure.ac.patch
	syms_of_cygw32.patch
	image_background.patch
	w32term.w32_init.patch
	unexcw.patch
	memory_warnings.patch
	24.3-4_nt_icon.patch
	nonbootstrap_static_heap.patch
	24.3_memalign.patch

Ken

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