bug#6997: Loading w32-fns under X11 signals an error

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Date: Wed, 08 Sep 2010 11:33:09 +0200
> Cc: 
> 
> The title says it.  It probably also messes with things, additionally to
> signalling an error.  Of course, you will say "don't do that", but
> remember that files may be loaded for all kinds of reasons, so they
> should be harmless.

"Harmless" in what sense?  Should they do nothing at all?  Probably
not, or else you wouldn't be loading them, right?

Even in your specific use-case, did you want the w32-fns functions to
end up in the obarray or not?

IOW, can you come up with a general enough definition of the reason(s)
for loading w32-fns on non-w32 systems?  Without such a definition, I
don't see how can we do anything except making the entire file be
ignored on any system but w32.