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: 103376,e5140c483354bfcc X-Google-Attributes: gid103376,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news3.google.com!newshub.sdsu.edu!elnk-nf2-pas!newsfeed.earthlink.net!stamper.news.pas.earthlink.net!newsread3.news.pas.earthlink.net.POSTED!a6202946!not-for-mail From: Jeffrey Carter Organization: jrcarter commercial-at acm [period | full stop] org User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.4) Gecko/20030624 X-Accept-Language: en-us, en MIME-Version: 1.0 Newsgroups: comp.lang.ada Subject: Re: What is correct way to pack records References: <3fc90377.0411171620.7a3bcfd9@posting.google.com> In-Reply-To: <3fc90377.0411171620.7a3bcfd9@posting.google.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Message-ID: Date: Thu, 18 Nov 2004 00:27:03 GMT NNTP-Posting-Host: 63.184.8.173 X-Complaints-To: abuse@earthlink.net X-Trace: newsread3.news.pas.earthlink.net 1100737623 63.184.8.173 (Wed, 17 Nov 2004 16:27:03 PST) NNTP-Posting-Date: Wed, 17 Nov 2004 16:27:03 PST Xref: g2news1.google.com comp.lang.ada:6260 Date: 2004-11-18T00:27:03+00:00 List-Id: Warren O. Merrill wrote: > I want my record structures to byte align (for compatibility with > existing files). I know about using the record representation clause > to lay them out. I have a LOT of these to do and just wondering if > any of the pragmas would be guaranteed to byte align my fields but NOT > change the order of the fields to do it (NOTE THAT IS IMPORTANT!!!!!). The only way to obtain a specific layout is to use a representation clause. In fact, the only way to guarantee that the fields are stored in the order they occur in the source is with a representation clause. -- Jeff Carter "Beyond 100,000 lines of code you should probably be coding in Ada." P. J. Plauger 26