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=ham
	autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,6b7d31ee31aa032
X-Google-Attributes: gid103376,public
X-Google-ArrivalTime: 2001-08-07 13:27:24 PST
Path: 
 archiver1.google.com!newsfeed.google.com!newsfeed.stanford.edu!newsfeeds.belnet.be!news.belnet.be!news-FFM2.ecrc.net!news.iks-jena.de!lutz
From: lutz@iks-jena.de (Lutz Donnerhacke)
Newsgroups: comp.lang.ada
Subject: Re: Ada.Streams.Read Length Paramenter is not IN?
Date: Tue, 7 Aug 2001 20:21:25 +0000 (UTC)
Organization: IKS GmbH Jena
Message-ID: <slrn9n0je5.gbg.lutz@belenus.iks-jena.de>
References: <slrn9mvbej.hs.lutz@taranis.iks-jena.de>
 <cCXb7.39349$Kd7.24285864@news1.rdc1.sfba.home.com>
NNTP-Posting-Host: belenus.iks-jena.de
X-Trace: branwen.iks-jena.de 997215685 32092 217.17.192.34 (7 Aug 2001
 20:21:25 GMT)
X-Complaints-To: usenet@iks-jena.de
NNTP-Posting-Date: Tue, 7 Aug 2001 20:21:25 +0000 (UTC)
User-Agent: slrn/0.9.6.3 (Linux)
Xref: archiver1.google.com comp.lang.ada:11526
Date: 2001-08-07T20:21:25+00:00
List-Id: <comp.lang.ada>

* tmoran@acm.org wrote:
>>  procedure Read(
>>    Stream : in out Filedescriptor_Stream_Type;
>>    Item   :    out Stream_Element_Array;
>>    Last   :    out Stream_Element_Offset) is
>>  begin
>>     Item := Read (Stream);
>>     Last := Item'Last;
>>  end Read;
>
>his is unlikely to work.

I got a hard to find CONTRAINT_ERROR. But debugging it I learned the
direction of discriminats of unconstraint out parameters.

>dynamic.  That's why Last is there - so you can see the length of the
>actual useful data portion of Item.

Very sensefull indeed. Thanx to all.