bug#48446: 28.0.50; Native compile failure during bootstrap

[Eli Zaretskii]

> Date: Sat, 15 May 2021 20:17:00 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: Alan Mackenzie <acm@muc.de>, 48446@debbugs.gnu.org
> 
> As you see, the native_comp_u member is non-NULL.  But still Ffuncall
> called funcall_subr, which AFAIU means it thought that
> Qminibuffer_inactive_mode is not a natively-compiled function.
> 
> What are we missing in this case? why doesn't Emacs recognize
> Qminibuffer_inactive_mode as a natively-compiled function?  Is this
> too early during startup, and if so, how to we call Lisp at this
> stage?

I think I succeeded to fix this now, but I'd still like to know
why the original code was wrong and how to avoid that in the future.