GNU bug report logs - #4196
Parallel bytecomp may sometimes fail

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Package: emacs;

Reported by: Glenn Morris <rgm <at> gnu.org>

Date: Thu, 20 Aug 2009 20:34:32 UTC

Severity: normal

Merged with 6858

Found in version 23.2

Fixed in version 24.1

Done: Glenn Morris <rgm <at> gnu.org>

Bug is archived. No further changes may be made.

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bug#4196; Package emacs. (Thu, 20 Aug 2009 20:34:32 GMT) Full text and rfc822 format available.

Message #3 received at quiet <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: quiet <quiet <at> debbugs.gnu.org>
Subject: Parallel bytecomp may sometimes fail
Date: Mon, 17 Aug 2009 21:52:58 -0400

Apparently, parallel byte-compilation may sometimes fail, if one
process tries to read an .elc file that another process is writing.

http://lists.gnu.org/archive/html/emacs-devel/2009-08/msg00294.html

Two solutions were suggested for this:

1) Prefer the .el files when byte-compiling. This is similar to a
feature that has been requested already (#2061), but using it in this
instance would change the way byte-compilation works (not that it
should have any measurable affect, other than a slowdown).

2) Write the .elc file to a temp file, then move it into position in a
single operation.
Merged 4196 6858. Request was from Glenn Morris <rgm <at> gnu.org> to control <at> debbugs.gnu.org. (Sat, 14 Aug 2010 21:35:02 GMT) Full text and rfc822 format available.
Reply sent to Glenn Morris <rgm <at> gnu.org>:
You have taken responsibility. (Sat, 11 Sep 2010 18:52:01 GMT) Full text and rfc822 format available.
Notification sent to Glenn Morris <rgm <at> gnu.org>:
bug acknowledged by developer. (Sat, 11 Sep 2010 18:52:02 GMT) Full text and rfc822 format available.

Message #10 received at 4196-done <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: 4196-done <at> debbugs.gnu.org
Subject: Re: bug#4196: Parallel bytecomp may sometimes fail
Date: Sat, 11 Sep 2010 14:53:50 -0400

Version: 24.1

Hopefully fixed by this change:

2010-09-11  Glenn Morris  <rgm at gnu.org>

  * emacs-lisp/bytecomp.el (byte-compile-file): Create .elc files
  atomically, to avoid parallel build errors.
Reply sent to Glenn Morris <rgm <at> gnu.org>:
You have taken responsibility. (Sat, 11 Sep 2010 18:52:02 GMT) Full text and rfc822 format available.
Notification sent to Sven Joachim <svenjoac <at> gmx.de>:
bug acknowledged by developer. (Sat, 11 Sep 2010 18:52:02 GMT) Full text and rfc822 format available.
bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Sun, 10 Oct 2010 11:24:03 GMT) Full text and rfc822 format available.
This bug report was last modified 14 years and 258 days ago.

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