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From: Robert A Duff <bobduff@shell01.TheWorld.com>
Newsgroups: comp.lang.ada
Subject: Re: Limited_Controlled, orthogonality and related issues
Date: Sat, 20 Jan 2007 09:44:13 -0500
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"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> writes:

> On Fri, 19 Jan 2007 15:17:04 -0500, Robert A Duff wrote:
>> End_Error should be a type (in this fantasy version of Ada).
>
> Then we have the first problem. Types cannot be renamed in Ada. Exceptions
> can be.

Indeed.  Designing a feature is relatively straightforward.
Making it upward compatible is really hard.

- Bob