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From: bobduff@world.std.com (Robert A Duff)
Subject: Re: Help! type extensions - Gnat for Win95
Date: 1996/04/14
Message-ID: <DpvJ95.IJ6@world.std.com>#1/1
X-Deja-AN: 147498512
references: <317169a3.48223533@news.lainet.com>
organization: The World Public Access UNIX, Brookline, MA
newsgroups: comp.lang.ada
Date: 1996-04-14T00:00:00+00:00
List-Id: <comp.lang.ada>

In article <317169a3.48223533@news.lainet.com>,
Lance  <lance@lainet.com> wrote:
>All of the above code compiles fine.

It shouldn't.  You need to make Stack abstract, since it has an abstract
primitive operation.

>...  However, I try to use the
>package in test program the compiler tells me  "type extension at
>deeper accessibility level than parent." at the line in
>Containers.Stacks.Bounded_STacks that defines the type. (marked with *
>above)

Don't extend these types in procedures or functions.  If the thing is
generic, don't instantiate it in a procedure or function.  Instantiate
it at library level (i.e. as a library unit, or nested within a package,
but not within a procedure).

- Bob