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

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Package: emacs;

Reported by: Paul Eggert <eggert <at> cs.ucla.edu>

Date: Mon, 22 Mar 2021 01:28:02 UTC

Severity: normal

Done: Paul Eggert <eggert <at> cs.ucla.edu>

Bug is archived. No further changes may be made.

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Report forwarded to bug-gnu-emacs <at> gnu.org:
bug#47307; Package emacs. (Mon, 22 Mar 2021 01:28:02 GMT) Full text and rfc822 format available.

Acknowledgement sent to Paul Eggert <eggert <at> cs.ucla.edu>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org. (Mon, 22 Mar 2021 01:28:02 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

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
[Message part 1 (text/plain, inline)]
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)]

Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#47307; Package emacs. (Mon, 22 Mar 2021 08:55:02 GMT) Full text and rfc822 format available.

Message #8 received at 47307 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: 47307 <at> debbugs.gnu.org
Subject: Re: bug#47307: Emacs 27.2 RC2 build/check issues on macOS ARM64
Date: Mon, 22 Mar 2021 09:54:29 +0100
[Message part 1 (text/plain, inline)]
Paul Eggert <eggert <at> cs.ucla.edu> writes:

Hi Paul,

> "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.

1 unexpected results:
   FAILED  tramp-test35-remote-path

This fails for a rather edge case being tested. It shouldn't stop the
release of Emacs 27.2.

For further analysis, could you please apply the appended patch, and
rerun tramp-tests? The resulting log file shall tell us more.

Thanks, and best regards, Michael.

[Message part 2 (text/x-patch, attachment)]

Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#47307; Package emacs. (Mon, 22 Mar 2021 16:24:02 GMT) Full text and rfc822 format available.

Message #11 received at 47307 <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: 47307 <at> debbugs.gnu.org
Subject: Re: bug#47307: Emacs 27.2 RC2 build/check issues on macOS ARM64
Date: Mon, 22 Mar 2021 09:23:50 -0700
[Message part 1 (text/plain, inline)]
On 3/22/21 1:54 AM, Michael Albinus wrote:

> For further analysis, could you please apply the appended patch, and
> rerun tramp-tests? The resulting log file shall tell us more.

Sure, updated log file compressed and attached.
[tramp-tests.log.gz (application/gzip, attachment)]

Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#47307; Package emacs. (Mon, 22 Mar 2021 17:01:02 GMT) Full text and rfc822 format available.

Message #14 received at 47307 <at> debbugs.gnu.org (full text, mbox):

From: Philipp Stephani <p.stephani2 <at> gmail.com>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: 47307 <at> debbugs.gnu.org
Subject: Re: bug#47307: Emacs 27.2 RC2 build/check issues on macOS ARM64
Date: Mon, 22 Mar 2021 17:59:36 +0100
Am Mo., 22. März 2021 um 02:28 Uhr schrieb Paul Eggert <eggert <at> cs.ucla.edu>:
> "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.

I think all these failures are covered by other bug reports, and they
are marked as fixed, so if necessary, the fixes could be backported:
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=42538
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=42533
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=42537
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=37615




Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#47307; Package emacs. (Mon, 22 Mar 2021 17:21:01 GMT) Full text and rfc822 format available.

Message #17 received at 47307 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: 47307 <at> debbugs.gnu.org
Subject: Re: bug#47307: Emacs 27.2 RC2 build/check issues on macOS ARM64
Date: Mon, 22 Mar 2021 19:20:40 +0200
> From: Paul Eggert <eggert <at> cs.ucla.edu>
> Date: Sun, 21 Mar 2021 18:27:32 -0700
> 
> 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.

I'm okay with installing this on the emacs-27 branch, but please wait
until Emacs 27.2 is released (in a few days, fingers crossed), as I
see no reason to delay 27.2 due to this issue.

Thanks.




Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#47307; Package emacs. (Tue, 23 Mar 2021 08:42:01 GMT) Full text and rfc822 format available.

Message #20 received at 47307 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Philipp Stephani <p.stephani2 <at> gmail.com>
Cc: 47307 <at> debbugs.gnu.org, Paul Eggert <eggert <at> cs.ucla.edu>
Subject: Re: bug#47307: Emacs 27.2 RC2 build/check issues on macOS ARM64
Date: Tue, 23 Mar 2021 09:40:55 +0100
Philipp Stephani <p.stephani2 <at> gmail.com> writes:

Hi Philipp,

> I think all these failures are covered by other bug reports, and they
> are marked as fixed, so if necessary, the fixes could be backported:
> https://debbugs.gnu.org/cgi/bugreport.cgi?bug=42538

Indeed, the Tramp error reported by Paul looks similar to this. But
bug#42538 is reported to be fixed already in both Emacs 27.2 and 28.1,
and the traces I've got from Paul look also different. So I will poke
around whether I could find something else.

But again, there's no reason to delay Emacs 27.2. due to this Tramp error.




Reply sent to Paul Eggert <eggert <at> cs.ucla.edu>:
You have taken responsibility. (Thu, 25 Mar 2021 15:17:01 GMT) Full text and rfc822 format available.

Notification sent to Paul Eggert <eggert <at> cs.ucla.edu>:
bug acknowledged by developer. (Thu, 25 Mar 2021 15:17:02 GMT) Full text and rfc822 format available.

Message #25 received at 47307-done <at> debbugs.gnu.org (full text, mbox):

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.




bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Fri, 23 Apr 2021 11:24:05 GMT) Full text and rfc822 format available.

This bug report was last modified 2 years and 340 days ago.

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