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-Thread: a07f3367d7,461d464a39a7a30a X-Google-Attributes: gida07f3367d7,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,UTF8 X-Received: by 10.180.38.73 with SMTP id e9mr2932241wik.2.1367665962574; Sat, 04 May 2013 04:12:42 -0700 (PDT) Path: hg5ni66846wib.1!nntp.google.com!feeder1.cambriumusenet.nl!feed.tweaknews.nl!85.12.40.131.MISMATCH!xlned.com!feeder3.xlned.com!newsfeed.xs4all.nl!newsfeed2.news.xs4all.nl!xs4all!border4.nntp.ams.giganews.com!border2.nntp.ams.giganews.com!border2.nntp.dca.giganews.com!nntp.giganews.com!newsfeed.news.ucla.edu!nrc-news.nrc.ca!News.Dal.Ca!news.litech.org!news2.arglkargh.de!news.mixmin.net!eternal-september.org!feeder.eternal-september.org!mx05.eternal-september.org!.POSTED!not-for-mail From: "J-P. Rosen" Newsgroups: comp.lang.ada Subject: Re: Erroneous code generation from GNAT or GCC? Date: Wed, 01 May 2013 20:19:10 +0200 Organization: A noiseless patient Spider Message-ID: References: Mime-Version: 1.0 Injection-Date: Wed, 1 May 2013 18:15:48 +0000 (UTC) Injection-Info: mx05.eternal-september.org; posting-host="2b3884a634d8f846e0712b4e3a92507a"; logging-data="12984"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19s+wo8gJRiikNvxlSTFHX1" User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130328 Thunderbird/17.0.5 In-Reply-To: Cancel-Lock: sha1:UPb3eb2KRIe7CXYeu0rO1udzGgQ= X-Enigmail-Version: 1.5.1 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Date: 2013-05-01T20:19:10+02:00 List-Id: Le 30/04/2013 21:06, Simon Wright a écrit : > The whole thing is bizarre: code statements are written using the form > of a qualified expression though clearly not a qualified expression > since it can't be assigned anywhere! Ada 83 had a requirement to allow inclusion of machine code. There was therefore a need to have a syntactic form that would fit every possible machine code. It made sense to represent a machine instruction as a kind of record, with fields like op-code, registers, address... Specifying code statements as aggregates provided the necessary flexibility without inventing a new syntactic form. -- J-P. Rosen Adalog 2 rue du Docteur Lombard, 92441 Issy-les-Moulineaux CEDEX Tel: +33 1 45 29 21 52, Fax: +33 1 45 29 25 00 http://www.adalog.fr