GNU bug report logs - #25018
GC incorrectly removes the temporary root file of the calling process

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From: Ludovic Courtès <ludo <at> gnu.org>
To: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Cc: 25018 <at> debbugs.gnu.org
Subject: bug#25018: GC incorrectly removes the temporary root file of the calling process
Date: Mon, 17 Oct 2022 10:51:19 +0200

Hi Maxim,

Maxim Cournoyer <maxim.cournoyer <at> gmail.com> skribis:

> Ludovic Courtès <ludo <at> gnu.org> writes:
>
>> Hi Maxim,
>>
>> (Stripping Cc:.)
>>
>> Ludovic Courtès <ludo <at> gnu.org> skribis:
>>
>>> Thank you!  (Your bug triage work is much appreciated!)  We could turn
>>> the example here in a unit test; the only downside is that running the
>>> GC in a test is expensive.
>>
>> Actually, there are tests that most likely relied on the previous
>> behavior and are now failing in
>> tests/{derivations,nar,publish,pypi,store}.scm.  We’ll have to look at
>> each one to make sure they are indeed making the wrong assumption and to
>> fix them.
>
> Hmm, I hadn't seen that coming.
>
>> What about reverting the change first so we can do that without
>> pressure and come up with a self-contained patch?
>
> Sounds reasonable, if we can't think of an immediate fix.

I reverted it in eec920ba93ecb086366576e31b785962fbaf81c2.

The way forward will be to review those tests one by one, make sure they
were making the “wrong” assumption, adjust them accordingly, and
possibly add new tests.  It’s not necessarily difficult but takes a bit
of time.  (In the coming weeks I’m going to try and focus on more urgent
matters but I’m happy to review if you or someone else gets to it!)

Thanks,
Ludo’.

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