Re: What is wrong here? (Generic and controlled types)

[Robert A Duff <bobduff@world.std.com>]

Robert Dewar <robert_dewar@my-deja.com> writes:

> It is interesting to argue about whether an RM reference would
> help. The RM reference would indeed be to the section in the
> RM talking about rules for deriving tagged types in terms of
> accessibility levels.

If you were to put in RM references, surely you would refer
to all the relevant paragraphs: the rule about deriving tagged types,
the definition of "library level", and the line of code in package
Finalization that says Controlled is tagged.

Still, I agree that this error message (and probably most error
messages) shouldn't bother with RM references (at least not by default).

I've seen some pretty useless ones.  Eg overload resolution fails to
find a unique interpretation, so it sends you into the bowels of chapter 8.

- Bob