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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Uninitialized out parameters.
Date: Thu, 7 Apr 2016 18:02:47 -0500
Organization: JSA Research & Innovation
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Xref: news.eternal-september.org comp.lang.ada:30046
Date: 2016-04-07T18:02:47-05:00
List-Id: <comp.lang.ada>

"AdaMagica" <christ-usch.grein@t-online.de> wrote in message 
news:51041ba8-3243-46bc-b97d-b106d4b357e2@googlegroups.com...
> Am Donnerstag, 7. April 2016 11:57:02 UTC+2 schrieb 
> Stefan...@uni-weimar.de:
>
>> > (2) The latter can be written in current Ada 2012: (that is, with TC1
>> > implemented)
>> >  function Y return T is (raise Program_Error);
>>
>> Great! I wasn't aware of that. I always thought, the expression in
>> brackets had to be of type T.
>>
>> Stefan
>
> A raise_expression matches any type. See RM.

Right. One can think of it sort of like "bottom" in a functional language - 
it represents the "not a value" of any type. (And touch it and you die.)

OTOH, like me, you may not want to think of functional languages much. ;-)

                                Randy.