bug#46256: [feature/native-comp] AOT eln files ignored if run from build tree

[Andrea Corallo]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Andrea Corallo <akrl@sdf.org>
>> Cc: pipcet@gmail.com, 46256@debbugs.gnu.org, andrewjmoreton@gmail.com
>> Date: Tue, 09 Mar 2021 07:03:01 +0000
>>
>> > Can you tell why are we loading the same .eln files more than once?
>>
>> I guess `load' was called two times on the same filename.
>
> Is this likely to happen?  Our code generally uses 'require', which
> should avoid that.

cc-*.el files for instance have more than one direct call to load.  IIRC
one of the analyzed cases was cc-mode related (certanly one I observed).

>> > What are the reasons for unloading a .eln file which was once loaded
>> > into a session?
>>
>> All the functions defined in it are not anymore reachable (read all
>> symbols functions are makunbound or defined to some other function).
>
> That means someone did unload-feature, right?

Also loading for example a new version freshly compiled of the same file
should present the same scenario.

Thanks

  Andrea