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From: Sven <sven.weidauer@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: How to pass around access types to interfaces?
Date: Fri, 24 Oct 2008 05:49:36 -0700 (PDT)
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Date: 2008-10-24T05:49:36-07:00
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> I assume this type declaration is in the main *procedure*. This
> means that the type has a local scope and life, which prevents
> converting its values to a more long-lived access type. Try
> declaring Concrete_Type in a package; that makes it live as long as
> the whole program, and should allow such conversions.

Yeah, the declaration was in the main procedure. When moving it to a
package everything works like it's supposed to. Thanks for your help.

I guess I have still a lot to learn about Ada. I was just thinking
about the lifetime of the object. It never occured to me that a type
also has a lifetime.