From -4586084108474549800 X-Google-Thread: f78e5,174aa7b34b06a51 X-Google-Attributes: gidf78e5,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news3.google.com!border1.nntp.dca.giganews.com!nntp.giganews.com!local01.nntp.dca.giganews.com!nntp.speakeasy.net!news.speakeasy.net.POSTED!not-for-mail NNTP-Posting-Date: Wed, 23 Nov 2005 08:50:01 -0600 Return-Path: X-Authentication-Warning: mulga.cs.mu.OZ.AU: fjh set sender to devnull@stump.algebra.com using -f X-Robomod: STUMP, ichudov@algebra.com (Igor Chudov) Delivered-To: std-c++@ucar.edu Message-Id: <200511231401.jANE1BuC092897@horus.isnic.is> From: Hyman Rosen Subject: Re: Is this really unspecified behavior? MIME-version: 1.0 Content-type: text/plain; format=flowed; charset=ISO-8859-1 Content-transfer-encoding: 7bit X-Accept-Language: en-us, en User-Agent: Mozilla Thunderbird 1.0.7 (Windows/20050923) Newsgroups: comp.std.c++ References: <1132629737.664847.151630@o13g2000cwo.googlegroups.com> <1132722639.345095.296070@f14g2000cwb.googlegroups.com> X-Virus-Scanned: amavisd-new at ucar.edu X-Virus-Scanned: amavisd-new at cs.mu.OZ.AU Approved: Fergus Henderson , moderator of comp.std.c++ X-Virus-Scanned: amavisd-new at cs.mu.OZ.AU Date: Wed, 23 Nov 2005 08:45:36 CST Lines: 18 NNTP-Posting-Host: 65.182.171.162 X-Trace: sv3-X95NPOBCxvgyiadNJkejdUMjxF9UAhsacAy5XvfssPDF9Dgr+xeOnkZeunxynNElIrUI76m5EDOoe6+!/euzw9xkdzml2YNgnMtJQlqqROvlX8GeNNAkYVqux8XBRqkvqLTGAUFUZYSRBt5mdWF1RAORGOkJ!GXHM4R/WUt/slKT0joiZ1HyA1nu9 X-Complaints-To: abuse@speakeasy.net X-DMCA-Complaints-To: abuse@speakeasy.net X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.32 Xref: g2news1.google.com comp.std.c++:2580 Greg Herlihy wrote: > Essentally, the result of evaluating i = v[i++] is unspecified because > i's value is accessed only once. No, it's undefined in the built-in case, because i is modified twice in the same expression (by the increment and by the assignment) without an intervening sequence point. Once again, I invite everyone in the newsgroup to notice how no one understands the rules as they exist. It's asinine not to have a defined order of evaluation, including side effects. --- [ 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://www.jamesd.demon.co.uk/csc/faq.html ]