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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Strange crash on custom iterator
Date: Sun, 01 Jul 2018 20:59:19 +0100
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Date: 2018-07-01T20:59:19+01:00
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Jacob Sparre Andersen <jacob@jacob-sparre.dk> writes:

> Luke A. Guest wrote:
>> Simon Wright <simon@pushface.org> wrote:
>
>>> I suspect that Unicode_String would need to be by-reference.
>>
>> Yeah I think I’m going to have to make it tagged.
>
> You don't need to make it tagged, to pass it by reference.  It is enough
> to make the formal parameter aliased.

Yes, that works (except you have to make the container you're iterating
over aliased too).