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Newsgroups: comp.lang.ada
Date: Thu, 18 Oct 2018 10:03:51 -0700 (PDT)
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Subject: Re: A function that cannot be called?
From: AdaMagica <christ-usch.grein@t-online.de>
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Xref: reader02.eternal-september.org comp.lang.ada:54631
Date: 2018-10-18T10:03:51-07:00
List-Id: <comp.lang.ada>

Am Donnerstag, 18. Oktober 2018 14:14:32 UTC+2 schrieb G.B.:
> package What is
> 
>      type Void (<>) is private;
> 
>      function Impossible (X : T) return Void;
> 
> private
...
> end What;

Of course this is possible. Declarations of objects of type Void must have an initial value, which can be provided via the "constructor" Impossible:

X: Void := Impossible (T0);

This works even if Void is made limited - then the return value is constructed in place.

In effect, it's not clear what you're about.