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=0.2 required=5.0 tests=BAYES_00,INVALID_MSGID,
	REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,ca9eef4d5e2078ea
X-Google-Attributes: gid103376,public
From: Ken Garlington <kennieg@nospam.flash.net>
Subject: Re: Beware: Rep spec on an enumeration type causes code explosion
Date: 1997/12/06
Message-ID: <3489D957.65C3@nospam.flash.net>#1/1
X-Deja-AN: 295868235
References: <gwinn-0512972303070001@dh5055063.res.ray.com>
Reply-To: Ken.Garlington@nospam.computer.org
Organization: Flashnet Communications, http://www.flash.net
Newsgroups: comp.lang.ada
Date: 1997-12-06T00:00:00+00:00
List-Id: <comp.lang.ada>


Joe Gwinn wrote:
> 
> Question.  Is there an Ada95 FAQ or the like, full of suitably dire
> warnings?  I have seen very useful and widely used published books of such
> things for C and C++, but have never seen anything like it for Ada95.  If
> there isn't yet one, perhaps we should develop one, for our mutual
> protection.

Two sources of information come to mind:

1. For general "warnings" of this type, you may wish to try the Ada
Quality & Style Guide,
which is available from

   http://sw-eng.falls-church.va.us/AdaIC/

For example, using the handy search feature for "enumeration
representation", one finds the statement:

  "Only if absolutely necessary, use representation clauses to match
requirements of external devices."

2. Check with your compiler vendor for available tool-specific
documentation. TI/Tartan compilers, for example, come with a fairly good
section on writing for optimization, and include a list of bugs
(including those affecting optimization). If your vendor can't, or
won't, provide such information, and you really need it, then consider a
change of vendor!