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From: Robert A Duff <bobduff@world.std.com>
Subject: Re: 11.6
Date: 1999/11/23
Message-ID: <wcc66ys7p3v.fsf@world.std.com>#1/1
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Sender: bobduff@world.std.com (Robert A Duff)
References: <3836ff5b_1@news1.prserv.net> <wcchfiexwj3.fsf@world.std.com>
 <3839d8a5_4@news1.prserv.net>
Organization: The World Public Access UNIX, Brookline, MA
Newsgroups: comp.lang.ada
Date: 1999-11-23T00:00:00+00:00
List-Id: <comp.lang.ada>

"Matthew Heaney" <matthew_heaney@acm.org> writes:

> Compare that Push with this one:
> 
>  procedure Push
>    (Stack : in out Stack_Type;
>     Item  : in     Item_Type) is
> 
>     Stack_Not_Full : constant Boolean range True .. True :=  --???
>       Stack.Top < Stack.Size;
> 
>     Top : Natural renames Stack.Top;
>  begin
>     Top := Top + 1;
>     Stack.Items (Top) := Item;
>  end Push;
> 
> 
> Can the marked line be optimized away per 11.6?

Yes.  (I don't like 11.6, by the way.)

But in the above you will still get a check on the array indexing.

- Bob