From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00
	autolearn=unavailable autolearn_force=no version=3.4.4
Path: 
 eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!news.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Null unbounded string
Date: Sat, 09 Aug 2014 19:26:39 +0100
Organization: A noiseless patient Spider
Message-ID: <lyfvh5msdc.fsf@pushface.org>
References: <ls5enf$49s$1@speranza.aioe.org> <ls5f8u$kes$2@dont-email.me>
	<ls5gcf$7ui$1@speranza.aioe.org>
Mime-Version: 1.0
Content-Type: text/plain
Injection-Info: mx05.eternal-september.org;
 posting-host="b814ca014269fd1fa21bc4c05b94dd9e";
	logging-data="20180"; mail-complaints-to="abuse@eternal-september.org";
	posting-account="U2FsdGVkX1+GazGMmPszmRXZAjffMDs2uQ9VVlkIPE4="
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (darwin)
Cancel-Lock: sha1:TwBLBkpyDnYB9Y6rCRv4C9gOyE4=
	sha1:+Zvjuzk7sE0SfynrQhoWPM8oNhQ=
Xref: news.eternal-september.org comp.lang.ada:21621
Date: 2014-08-09T19:26:39+01:00
List-Id: <comp.lang.ada>

Victor Porton <porton@narod.ru> writes:

> Jeffrey Carter wrote:
>
>> On 08/09/2014 08:28 AM, Victor Porton wrote:
>>> Is Ada.Strings.Unbounded.Null_Unbounded_String an empty string or is it
>>> something different (like NULL char pointer in C)?
>> 
>> It's equivalent to an empty string. How it's implemented is unimportant.
>
> But where in the ARM it's said that it is equivalent to an empty string?

http://www.ada-auth.org/standards/12rm/html/RM-A-4-5.html#p73