GNU bug report logs - #47307
Emacs 27.2 RC2 build/check issues on macOS ARM64

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Paul Eggert <eggert <at> cs.ucla.edu>
Subject: bug#47307: closed (Re: bug#47307: Emacs 27.2 RC2 build/check
 issues on macOS ARM64)
Date: Thu, 25 Mar 2021 15:17:02 +0000

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Your bug report

#47307: Emacs 27.2 RC2 build/check issues on macOS ARM64

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 47307 <at> debbugs.gnu.org.

-- 
47307: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=47307
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 47307-done <at> debbugs.gnu.org
Subject: Re: bug#47307: Emacs 27.2 RC2 build/check issues on macOS ARM64
Date: Thu, 25 Mar 2021 08:16:12 -0700

On 3/22/21 10:20 AM, Eli Zaretskii wrote:
> I'm okay with installing this on the emacs-27 branch, but please wait
> until Emacs 27.2 is released

OK, done, and closing the bug report.

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Emacs bug reports and feature requests <bug-gnu-emacs <at> gnu.org>
Subject: Emacs 27.2 RC2 build/check issues on macOS ARM64
Date: Sun, 21 Mar 2021 18:27:32 -0700

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I configured Emacs 27.2 RC2 on macOS 11.2 ARM64 (arm-apple-darwin20.3.0) 
using "./configure --with-gnutls=ifavailable" (plain "./configure" 
failed, which was disconcerting). When I ran "make" the compiler complained:

editfns.c:2063:18: warning: unsequenced modification and access to 
'sa_avail' [-Wunsequenced]

This correctly diagnoses undefined behavior in that C function. I didn't 
investigate what happens on that platform is as it's easier to fix the 
problem on all platforms. I propose installing the attached 
obviously-safe patch into the emacs-27 branch.

There were several deprecation warnings when compiling but I assume we 
don't care about them in this older branch.

"make check" reported four unexpected failures. Perhaps a macOS expert 
could be persuaded to look into them. A tarball of the failed logs is 
attached.

[0001-Fix-replace-buffer-contents-undefined-behavior.patch (text/x-patch, attachment)]

[emacs-27.2-RC2-failures-macOS11.2-ARM.tar.gz (application/gzip, attachment)]

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