From 5464701642390377806 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,855073145fb9fdb7 X-Google-Attributes: gidf78e5,public From: Email_To::.Hans.Olsson@dna.lth.se (Hans Olsson) Subject: Re: Minimum Size of Array in Standard (solution) Date: 1998/11/13 Message-ID: <72gt0j$kn7$1@news.lth.se>#1/1 X-Deja-AN: 411449738 Content-Transfer-Encoding: 8bit Approved: Fergus Henderson References: <199811032027.NAA25799@ncar.ucar.EDU> <72ak12$ma2$1@shell7.ba.best.com> <72c1m9$ikm$1@news.lth.se> <72e9ql$mgp$1@shell7.ba.best.com> X-Original-Date: 13 Nov 1998 09:09:39 GMT Content-Type: text/plain; charset=iso-8859-1 X-Complaints-To: news@news.unimelb.edu.au X-Trace: izvestia.its.unimelb.edu.au 910965344 11067 128.250.29.16 (13 Nov 1998 13:55:44 GMT) Organization: Lund Institute of Technology, Sweden X-Auth: PGPMoose V1.1 PGP comp.std.c++ iQBFAgUANkw6RuEDnX0m9pzZAQHwNQF/WHL7BMA2Fpbp6tEFCm2CDvYaNI3u5Cp6 stAaqDQNeM7DffPnvy5kkdRjNPFkXtOp =b62k Mime-Version: 1.0 NNTP-Posting-Date: 13 Nov 1998 13:55:44 GMT Newsgroups: comp.std.c++ In article <72e9ql$mgp$1@shell7.ba.best.com>, Nathan Myers wrote: >[Deleted] I think a union cannot contain padding before >its first member, at least. Looking back and forth in CD2 (9.5/1, 9.2/17, 5.9/2) I found that a union with a POD member cannot contain padding before its members. Since we assume that T is a POD-type there will not be any padding in this case (assuming there were no substantial changes in this area between CD2 and the standard) I'm not sure about unions without POD-members, but I fail to see the need for any padding, especially since all members must have the same adress (5.9/2). -- // Home page http://www.dna.lth.se/home/Hans_Olsson/ // Email To..Hans.Olsson@dna.lth.se [Please no junk e-mail] --- [ comp.std.c++ is moderated. To submit articles, try just posting with ] [ your news-reader. If that fails, use mailto:std-c++@ncar.ucar.edu ] [ --- Please see the FAQ before posting. --- ] [ FAQ: http://reality.sgi.com/austern_mti/std-c++/faq.html ]