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=-0.9 required=5.0 tests=BAYES_00,FORGED_GMAIL_RCVD,
	FREEMAIL_FROM autolearn=no autolearn_force=no version=3.4.4
X-Google-Thread: 103376,4ce0ea7d497db907,start
X-Google-Attributes: gid103376,domainid0,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news1.google.com!postnews.google.com!w9g2000yqa.googlegroups.com!not-for-mail
From: Maciej Sobczak <see.my.homepage@gmail.com>
Newsgroups: comp.lang.ada
Subject: anonymous access type
Date: Tue, 3 Mar 2009 04:25:59 -0800 (PST)
Organization: http://groups.google.com
Message-ID: <d1fb109a-13d6-4884-9e71-304a58c46e62@w9g2000yqa.googlegroups.com>
NNTP-Posting-Host: 137.138.182.236
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
X-Trace: posting.google.com 1236083159 14231 127.0.0.1 (3 Mar 2009 12:25:59
 GMT)
X-Complaints-To: groups-abuse@google.com
NNTP-Posting-Date: Tue, 3 Mar 2009 12:25:59 +0000 (UTC)
Complaints-To: groups-abuse@google.com
Injection-Info: w9g2000yqa.googlegroups.com; posting-host=137.138.182.236;
	posting-account=bMuEOQoAAACUUr_ghL3RBIi5neBZ5w_S
User-Agent: G2/1.0
X-HTTP-UserAgent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US;
	rv:1.9.0.6) Gecko/2009011912 Firefox/3.0.6,gzip(gfe),gzip(gfe)
Xref: g2news1.google.com comp.lang.ada:3890
Date: 2009-03-03T04:25:59-08:00
List-Id: <comp.lang.ada>

Hi,

Consider a simple callback protocol:

   procedure Call (Process : not null access procedure);

This is widely used for example in the containers library (Iterate
operation).

Now, being a good citizen, I would like to explicitly stress that the
parameter is passed 'in' instead of relying on implicit mode, so let's
add the 'in' keyword where it belongs:

   procedure Call (Process : in not null access procedure);

GNAT says: "anonymous access type definition not allowed here".

I cannot find anything in the standard that would explain this. Any
references are welcome.

--
Maciej Sobczak * www.msobczak.com * www.inspirel.com

Database Access Library for Ada: www.inspirel.com/soci-ada