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,FREEMAIL_FROM
	autolearn=unavailable autolearn_force=no version=3.4.4
X-Received: by 10.98.82.72 with SMTP id g69mr15661450pfb.14.1471860027167;
        Mon, 22 Aug 2016 03:00:27 -0700 (PDT)
X-Received: by 10.157.46.205 with SMTP id w71mr1077027ota.1.1471860027065;
 Mon, 22 Aug 2016 03:00:27 -0700 (PDT)
Path: 
 eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!news.eternal-september.org!feeder.eternal-september.org!news.glorb.com!f6no11977145ith.0!news-out.google.com!d68ni35437ith.0!nntp.google.com!f6no11951401ith.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail
Newsgroups: comp.lang.ada
Date: Mon, 22 Aug 2016 03:00:26 -0700 (PDT)
In-Reply-To: <npcivp$6jf$1@dont-email.me>
Complaints-To: groups-abuse@google.com
Injection-Info: glegroupsg2000goo.googlegroups.com;
 posting-host=91.55.212.229;
 posting-account=rmHyLAoAAADSQmMWJF0a_815Fdd96RDf
NNTP-Posting-Host: 91.55.212.229
References: <npcivp$6jf$1@dont-email.me>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <383be26e-879c-42ad-9606-8f6fe04bf7d2@googlegroups.com>
Subject: Re: qualified expressions acting as names - not accepted?
From: AdaMagica <christ-usch.grein@t-online.de>
Injection-Date: Mon, 22 Aug 2016 10:00:27 +0000
Content-Type: text/plain; charset=UTF-8
Xref: news.eternal-september.org comp.lang.ada:31498
Date: 2016-08-22T03:00:26-07:00
List-Id: <comp.lang.ada>

indexed_component ::= prefix(expression {, expression})
prefix ::= name | implicit_dereference
name ::= 
     direct_name | explicit_dereference
   | indexed_component | slice
   | selected_component | attribute_reference
   | type_conversion | function_call
   | character_literal | qualified_expression
   | generalized_reference | generalized_indexing
qualified_expression ::= 
   subtype_mark'(expression) | subtype_mark'aggregate

With this excerpt from the syntax, it looks like your compiler has a problem.