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,d58fe1ff04da7fd7
X-Google-Attributes: gid103376,public
X-Google-ArrivalTime: 2001-08-14 13:02:41 PST
Path: 
 archiver1.google.com!newsfeed.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!newshub2.home.com!news.home.com!news1.rdc1.sfba.home.com.POSTED!not-for-mail
From: tmoran@acm.org
Newsgroups: comp.lang.ada
Subject: Re: Ambiguous reference - What is wrong with this?
References: <9lbf8n$brf$1@nh.pace.co.uk>
X-Newsreader: Tom's custom newsreader
Message-ID: <xtfe7.1336$Wm3.1010586@news1.rdc1.sfba.home.com>
Date: Tue, 14 Aug 2001 20:02:37 GMT
NNTP-Posting-Host: 24.7.82.199
X-Complaints-To: abuse@home.net
X-Trace: news1.rdc1.sfba.home.com 997819357 24.7.82.199 (Tue,
 14 Aug 2001 13:02:37 PDT)
NNTP-Posting-Date: Tue, 14 Aug 2001 13:02:37 PDT
Organization: Excite@Home - The Leader in Broadband http://home.com/faster
Xref: archiver1.google.com comp.lang.ada:11936
Date: 2001-08-14T20:02:37+00:00
List-Id: <comp.lang.ada>

I think the problem occurs back at
package Root.Child1 is
    type Derive1 is new Base with private ;
inherits
    procedure Some_Proc (
        Object         : in out Derive1;  -- was Base
        Object2        : in out Base'Class) ;
and then you declare another procedure, with a different second parameter,
    procedure Some_Proc (
        Object         : in out Derive1;
        Object2        : in out Derive1'Class) ;
now which is
        Root.Child1.Some_Proc (
            Object     => Root.Child1.Derive1 (Object),
            Object2    => Object2) ;  -- in Derive1'Class and Base'Class
supposed to be calling?