bug#53497: 29.0.50; native-compile after restarting Emacs

[Eli Zaretskii <eliz@gnu.org>]

> From: Arash Esbati <arash@gnu.org>
> Cc: akrl@sdf.org,  larsi@gnus.org,  53497@debbugs.gnu.org
> Date: Tue, 25 Jan 2022 12:01:35 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > So I think the only way to make progress here is to run Emacs under
> > GDB, with a breakpoint in maybe_defer_native_compilation, and if and
> > when it breaks, see what goes on there.  In general, this breakpoint
> > should break as soon as you invoke some command that loads a .elc file
> > for which there's no corresponding .eln file.
> >
> > I hope your Emacs is not stripped of debugging symbols; if it is,
> > please rebuild and install without stripping and with -g3 switch, and
> > run the resulting executable under GDB as described above.
> 
> Thanks for the guidance.  I did that all and stared for some times at
> it.  Since it doesn't emit an error and I'm not really familiar with the
> code, I think I have to spend more time on this exercise.

You mean, the breakpoint in maybe_defer_native_compilation never
breaks?  That in itself is probably a sign of some problem.

> I suggest I close this report for now and dig further, I can re-open
> once I have something new.
> 
> OK for you?  Thanks again to you all.

There's no need to close it right away, unless you can no longer
reproduce the issue.  I'd prefer to close when we either understand
the reasons or the problem goes away by itself and becomes
unreproducible.