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: 103376,2a0aa2b1c348fd6a X-Google-Attributes: gid103376,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news1.google.com!newshub.sdsu.edu!elnk-nf2-pas!newsfeed.earthlink.net!stamper.news.pas.earthlink.net!newsread1.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 MSIE X-Accept-Language: en-us, en MIME-Version: 1.0 Newsgroups: comp.lang.ada Subject: Re: shifting bits References: <4353664.evzZIOeHXC@linux1.krischik.com> In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Message-ID: <1EKYc.2879$w%6.1846@newsread1.news.pas.earthlink.net> Date: Mon, 30 Aug 2004 18:48:29 GMT NNTP-Posting-Host: 63.184.105.71 X-Complaints-To: abuse@earthlink.net X-Trace: newsread1.news.pas.earthlink.net 1093891709 63.184.105.71 (Mon, 30 Aug 2004 11:48:29 PDT) NNTP-Posting-Date: Mon, 30 Aug 2004 11:48:29 PDT Xref: g2news1.google.com comp.lang.ada:3177 Date: 2004-08-30T18:48:29+00:00 List-Id: Georg Bauhaus wrote: > when I declare > > type month_type is range 1 .. 12; > for month_type'Size use 4; > > m: month_type := 1; > > the compiler chooses 8 (following the rule > "Object_Size must be 8, 16, 32, or multiple of 64" > I guess.) > > TIO.put_line("m's size: " & Natural'image(m'size)); > > prints > > m's size: 8 A specified 'Size effects the size in a packed composite type, but not for a stand-alone object. Try type Month_List is array (Month_Type) of Month_Type; pragma Pack (Month_List); L : Month_List; TIO.Put_Line ("L's size: " & Natural'image (L'Size) ); GNAT 3.15p/Win98 outputs M's size: 8 L's size: 64 L has been padded to a multiple of 32, which is allowed because it's a stand-alone object, but is not 96, which is what you would get if each component were 8 bits. -- Jeff Carter "Now look, Col. Batguano, if that really is your name." Dr. Strangelove 31