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From: "Matthew Heaney" <mheaney@on2.com>
Newsgroups: comp.lang.ada
References: <pan.2004.09.30.20.31.43.819322@power.com.pl>
Subject: Re: Ada0Y anonymous access to self type
Date: Thu, 30 Sep 2004 16:47:00 -0400
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Date: 2004-09-30T20:35:49+00:00
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"Wojtek Narczynski" <wojtek@power.com.pl> wrote in message
news:pan.2004.09.30.20.31.43.819322@power.com.pl...
>
> type Foo_Type;
>
> -- This compiles
> type Bar_Type is record
>    Foo : access Foo_Type;
> end record;
>
> -- This does not
> type Foo_Type is record
>    Next : access Foo_Type;
> end record;
>
> For the Foo_Type record the compiler complains that "type declaration
> cannot refer to itself", but does this restriction serve any purpose?
>
> There was something about taming the "access types proliferation" in
Ada0Y...

Leave in the forward declaration of type Foo_Type, and see if that compiles.