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bug#25241: Emacs 25.1.90 pretest crash on macOS 10.10 Yosemite


From: Eli Zaretskii
Subject: bug#25241: Emacs 25.1.90 pretest crash on macOS 10.10 Yosemite
Date: Wed, 21 Dec 2016 22:35:09 +0200

> From: Alexis Layton <address@hidden>
> Date: Wed, 21 Dec 2016 15:27:30 -0500
> Cc: Alexis Layton <address@hidden>,
>  address@hidden
> 
>  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.





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