GNU bug report logs - #54433
29.0.50; Invalid read syntax: "#<" with async-bytecomp

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Michael Heerdegen <michael_heerdegen <at> web.de>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#54433: closed (29.0.50; Invalid read syntax: "#<" with
 async-bytecomp)
Date: Thu, 24 Mar 2022 01:39:02 +0000

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Your message dated Thu, 24 Mar 2022 02:38:14 +0100
with message-id <87fsn8ku49.fsf <at> web.de>
and subject line Re: bug#54433: 29.0.50; Invalid read syntax: "#<" with async-bytecomp
has caused the debbugs.gnu.org bug report #54433,
regarding 29.0.50; Invalid read syntax: "#<" with async-bytecomp
to be marked as done.

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


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From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: bug-gnu-emacs <at> gnu.org
Subject: 29.0.50; Invalid read syntax: "#<" with async-bytecomp
Date: Thu, 17 Mar 2022 03:55:27 +0100

Hello,

when updating packages with M-x package-list-packages, and using
async-bytecomp.el to compile, some users get an error like this one:

error in process sentinel: async-when-done: Invalid read syntax: "#<"
error in process sentinel: Invalid read syntax: "#<"

This seems to be related to the recent addition of symbols with
positions.

async uses `async-inject-variables' to collect variable bindings of
interest and deliver them to the other Emacs instance.  The return value
contains symbols with positions in some scenarios.

The root of the trouble seems to be the value of
`byte-optimize--dynamic-vars'.  As soon as I byte compile any file, I
see lots of symbols with positions in `byte-optimize--dynamic-vars'.

Is that expected?  What has to be done?

TIA,

Michael.


In GNU Emacs 29.0.50 (build 55, x86_64-pc-linux-gnu, GTK+ Version 3.24.24, cairo version 1.16.0)
 of 2022-03-17 built on drachen
Repository revision: 97e687006498490cca1e6dabc1ea7e692271c5ed
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12011000
System Description: Debian GNU/Linux 11 (bullseye)

Configured using:
 'configure --with-native-compilation --with-xwidgets'

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From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: Thierry Volpiatto <thievol <at> posteo.net>
Cc: 54433-done <at> debbugs.gnu.org, Alan Mackenzie <acm <at> muc.de>
Subject: Re: bug#54433: 29.0.50; Invalid read syntax: "#<" with async-bytecomp
Date: Thu, 24 Mar 2022 02:38:14 +0100

Thierry Volpiatto <thievol <at> posteo.net> writes:

> > I think that all the byte-* variables are connected with byte
> > compilation.  But I also think that they are (?nearly?) all internal
> > variables, so it shouldn't be needed to copy them to an aynchronous
> > thread (?or process?).
>
> Thanks to confirm this.

I can confirm that the problem has been fixed well in the "async"
package, and we have found that everything in Emacs is working as
expected.  So I'm closing this report.  Thanks to everybody involved!

Michael.

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