bug#8545: issues with recent doprnt-related changes

[Stefan Monnier]

> Sorry, but I don't see the general principle.  Earlier, it was
> thought that emacs_write should return a signed value, because there's
> code like (emacs_write (...) != n) in fileio.c, where 'n' is
> signed, and signed-versus-unsigned comparison is problematic.
> I can certainly understand this point of view.

That's the point of view, yes.

> With doprnt returning size_t, though, we still have this problem.

I haven't looked at the code.  I only commented based on Eli's
description, who said that all the relevant code used size_t.
Personally, I'd use `int' for such things, since any message larger than
2GB should be a sign that something went very wrong long before.


        Stefan