GNU bug report logs - #25241
Emacs 25.1.90 pretest crash on macOS 10.10 Yosemite

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Alan Third <alan <at> idiocy.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#25241: closed (Emacs 25.1.90 pretest crash on macOS 10.10
 Yosemite)
Date: Wed, 08 Mar 2017 13:44:02 +0000

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Your message dated Wed, 08 Mar 2017 13:42:45 +0000
with message-id <m2efy7riju.fsf <at> breton.holly.idiocy.org>
and subject line Re: bug#25241: Emacs 25.1.90 pretest crash on macOS 10.10 Yosemite
has caused the debbugs.gnu.org bug report #25241,
regarding Emacs 25.1.90 pretest crash on macOS 10.10 Yosemite
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


-- 
25241: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=25241
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Alexis Layton <alexis.layton <at> post.harvard.edu>
To: bug-gnu-emacs <at> gnu.org
Subject: Emacs 25.1.90 pretest crash on macOS 10.10 Yosemite
Date: Tue, 20 Dec 2016 21:45:47 -0500

I run the Mac OS (X) binary distributions built by David Caldwell at www.emacsformacosx.com, which claim to be pure GNU Emacs. The latest pretest 25.1.90 immediately crashes on OS X 10.10.5 Yosemite.

$ emacs -nw -q
Illegal instruction: 4

I can't really give much more information. 25.1 and all of its protests and release candidates ran fine, and the released version continues to do so.

Sent from my iPad

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From: Alan Third <alan <at> idiocy.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: alexis.layton <at> post.harvard.edu, 25241-done <at> debbugs.gnu.org,
 Alexis Layton <layton.alexis <at> gmail.com>
Subject: Re: bug#25241: Emacs 25.1.90 pretest crash on macOS 10.10 Yosemite
Date: Wed, 08 Mar 2017 13:42:45 +0000

Eli Zaretskii <eliz <at> gnu.org> writes:

>> From: Alexis Layton <layton.alexis <at> gmail.com>
>> Date: Wed, 21 Dec 2016 15:27:30 -0500
>> Cc: Alexis Layton <alexis.layton <at> post.harvard.edu>,
>>  25241 <at> debbugs.gnu.org
>> 
>>  It would help if you could run Emacs under a debugger and show
>>  backtrace when it crashes.
>> 
>>  Thanks.
>> 
>> Sadly this is not as informative as it looks:
>> 
>> $ lldb /Applications/Emacs.app/Contents/MacOS/Emacs-x86_64-10_9 
>> (lldb) target create "/Applications/Emacs.app/Contents/MacOS/Emacs-x86_64-10_9"
>> Current executable set to '/Applications/Emacs.app/Contents/MacOS/Emacs-x86_64-10_9' (x86_64).
>> (lldb) r
>> Process 23181 launched: '/Applications/Emacs.app/Contents/MacOS/Emacs-x86_64-10_9' (x86_64)
>> Process 23181 stopped
>> * thread #1: tid = 0x1550e6, 0x000000010084979d libnettle.6.dylib`nettle_sha256_init + 4, queue =
>> 'com.apple.main-thread', stop reason = EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)
>> frame #0: 0x000000010084979d libnettle.6.dylib`nettle_sha256_init + 4
>> libnettle.6.dylib`nettle_sha256_init:
>> -> 0x10084979d <+4>: vmovaps 0x130bb(%rip), %xmm0 ; nettle_sha256_init.H0 + 16
>> 0x1008497a5 <+12>: vmovups %xmm0, 0x10(%rdi)
>> 0x1008497aa <+17>: vmovaps 0x1309e(%rip), %xmm0 ; nettle_sha256_init.H0
>> 0x1008497b2 <+25>: vmovups %xmm0, (%rdi)
>
> This looks like the crash is inside libnettle, a shared library used
> by GnuTLS.  Could it be that you have an incompatible binary of that
> library?
>
> In any case, the problem doesn't seem to be in Emacs.

It's been over ten weeks with no response, so I'm going to close this
bug. If you need further help you can still reply to this, or it might
be worth checking with the Emacs for OS X people to see if there are any
pre-requisites.
-- 
Alan Third

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