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From: Ronald.Rosenfeld@rc.patrick.af.mil (Ronald Rosenfeld)
Newsgroups: comp.lang.ada
Subject: Re: ADA Compile Warning
Date: 2 Nov 2001 09:42:18 -0800
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Ted Dennison<dennison@telepath.com> wrote in message news:<4efE7.8816$xS6.11821@www.newsranger.com>...
> In article <4ccfed40.0111010649.3f98d88@posting.google.com>, Ronald Rosenfeld
> says...
> >    Perhaps someone can help. We use a Rational VADSself Version
> >6.2.1. ADA compiler for DEC RISC Ultrix machines. When compiling the
> >following piece of code:
> >
> >"WITH text_io;  -- WITHs must precede each new package declaration
> > WITH base;
> > PACKAGE byte_io IS NEW text_io.integer_io (base.byte_type);",
> >
> >we get the following warning:
> >
> >"warning: Appendix F: representation of actual prevents code sharing".
> >
> >Why is the warning pointing to "NEW text_io.integer_io
> >(base.byte_type);"?
> 
> This is essentially saying: "Normally, I would share some code between this
> generic instantiation of Text_IO.Integer_IO and all other such instantiations to
> save space. However, I'm unable to do that in this case because of the way
> base.byte_type is defined. Thus I'm going to have to create a separate copy of
> all the code inside the generic."
> 
> This isn't a really big problem, unless you are making lots of Integer_IO
> instantiations. Most Ada compilers don't even implement this generic sharing at
> all, so the fact that this one can't do it in this case is really of little
> concern.
> 
> However, since you appear to be a newbie (based on your capitilzation of "Ada"),
> I'd like to ask *why* you are using Integer_IO in the first place. If you just
> need a string representation of your integer-derived type,
> "Base.Base_Type'image" would do the job much easier. Integer_IO is really only
> for situations where you want to display the value in a specific format, or in a
> base other than 10.
> 
> ---
> T.E.D.    homepage   - http://www.telepath.com/dennison/Ted/TED.html
> 
> No trees were killed in the sending of this message. 
> However a large number of electrons were terribly inconvenienced.

Ted,

    Many thanks for your help. You asked me why I am using Integer_IO.
That's a good question. I don't know. I just inherited the software.
It does things in ways I don't understand. I tried your suggestion
with success.

Ron