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From: Francois Godme <fgodme@magic.fr>
Subject: Re: Function Calls by Address
Date: 1999/09/03
Message-ID: <37CFFEA6.921CBE59@magic.fr>#1/1
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Date: 1999-09-03T00:00:00+00:00
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Robert Dewar wrote:

> In article <37CEEFFA.7D73F78D@magic.fr>,
>   Francois Godme <fgodme@magic.fr> wrote:
>
> > Loop around a small C language stub that calls a function
> > passed from Ada.
> >
> > Easy, next one :)
> >
> > Francois Godme
>
> Not so fast! I assume you mean to use 'Address here. This may
> work on some implementations, but there is no guarantee that
> it will work, and it definitely will NOT work on some
> implementations where the Address of a procedure is not a
> full context, and it typically will NOT work for nested
> procedures with uplevel references.
>
> Sent via Deja.com http://www.deja.com/
> Share what you know. Learn what you don't.

Yes, it will not work everywhere and not for nested procedures.

I knew about the nested procedures restriction but thought that no one
still uses nested procedures. Personally, I have stopped using them. Why
will I hide a perfectly useful procedure inside another when all I want
is to spare me rewriting over and over the same thing. Are nested
procedures coming from the Pascal heritage where everything was residing
inside the main program? By the same matter, who is still using the
'separate' construct for writing new applications?

Francois Godme