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.

Full log

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.
This bug report was last modified 14 years and 275 days ago.

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