GNU bug report logs - #48141
28.0.50; Files left over by native compiler

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Package: emacs;

Reported by: Stefan Monnier <monnier <at> iro.umontreal.ca>

Date: Sat, 1 May 2021 14:37:01 UTC

Severity: normal

Merged with 52912

Found in versions 28.0.50, 29.0.50

Fixed in version 29.1

Done: Lars Ingebrigtsen <larsi <at> gnus.org>

Bug is archived. No further changes may be made.

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From: Gregory Heytings <gregory <at> heytings.org>
To: Glenn Morris <rgm <at> gnu.org>
Cc: Stefan Monnier <monnier <at> iro.umontreal.ca>, 48141 <at> debbugs.gnu.org
Subject: bug#48141: 28.0.50; Files left over by native compiler
Date: Mon, 03 May 2021 08:42:08 +0000

>> I have a few files apparently left over from failed native 
>> compilations. They look like `lisp/foo.elcABCDEF` where `ABCDEF` is 
>> random (presumably chosen by `make-temp-file`).
>
> This is not directly related to native compilation. This is so creation 
> of .elc files can be atomic (bug#4196).
>
>> and maybe we should put them in /tmp?
>
> IIUC, the temp files must be on the same partition as the destination 
> .elc files, else the move would not be atomic.
>

Given that requirement (atomicity) and its implication (same partition), 
would it not be better to create these temporary files in a 'tmp' 
subdirectory of their target directory (e.g. 'lisp/tmp' for el files in 
'lisp' and 'lisp/calc/tmp' for el files in 'lisp/calc') instead of using 
random filenames in the target directory itself?
This bug report was last modified 3 years and 115 days ago.

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