Re: How does one find out what file a library has been loaded from?

[Eli Zaretskii]

> From: Andrea Corallo <akrl@sdf.org>
> Cc: acm@muc.de, emacs-devel@gnu.org
> Date: Tue, 02 Aug 2022 08:43:53 +0000
> 
> > Other than that only note I've is that (in 'maybe_swap_for_eln1') we do
> > reject the .eln file if it's younger than the corresponding .elc one.  I
> > think we should mimic this as well here no?
> 
> I do realize now this is probably not a real case as: if (in
> 'maybe_swap_for_eln1') we reject the eln while loading because older
> than the elc we give up entirely on loading native code, even if might
> be available in another directory down in `native-comp-eln-load-path'.
> So your code should be just fine in this respect.

I'm not sure I understand: in what sense do we "give up entirely on
loading native code"?  I don't see in maybe_swap_for_eln1 or in
maybe_swap_for_eln anything that would mean something like that.  All
I see is that we continue using the .elc file if the timestamp test
fails.  So in that case, my changes would return the .eln file even
though it was not actually loaded.  We could document this corner use
case, and say that we return the .eln file even if it's outdated, or
we could add the timestamp test you suggested, and return the .elc
file if the test fails.

Or what am I missing?

Thanks.