From 4043728850815280253 X-Google-Thread: f78e5,191c67e7ffa6c8e7 X-Google-NewGroupId: yes X-Google-Attributes: gid7894ca11fe,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news4.google.com!news2.google.com!Xl.tags.giganews.com!border1.nntp.dca.giganews.com!nntp.giganews.com!local2.nntp.dca.giganews.com!news.giganews.com.POSTED!not-for-mail NNTP-Posting-Date: Mon, 11 Oct 2010 18:10:02 -0500 Return-Path: X-Hash: SCt|7756f4c2ed7e1a3efbaced4008f802cd5423affa|f18d2219a37fc041fa06509f0e743160 X-Countries: United States X-SMTP-From: accepted assassin.cs.rpi.edu [128.113.126.17] (assassin.cs.rpi.edu) {United States} DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=cs.rpi.edu; h=date :to:sender:message-id:from:subject:references:content-type; s= default; i=128.113.126.17@cs.rpi.edu; t=1286838401; x= 1287443201; l=960; bh=eVKPpkuQrcDIe3xkdt6NLAOS6FA=; b=FEIOXXNDR6 V3DMyviiFi4AkHa4nSiETr7hMAjfxU9ksQr1yYTMIxtAR33td3tmNqi1t4equsSx WNVaeWHwNE0Kz+ZG3XazEaowuFXZ0Zd3qF6pBniq7Grjfv3gUqNCAsnUqQquDb/B bHe7KDlgmz/7dAUGc7N/E8vWvq9JXV3kA= DomainKey-Signature: a=rsa-sha1; c=nofws; d=cs.rpi.edu; h=date:to:sender :message-id:from:subject:references:content-type; q=dns; s= default; b=QFaNEr6wIqA3yjNUHt8l9tUqCqNXiCeAWpocosHZAr0RqUoIqFnx+ 0F1lvG/RghPWyAv3atoOjDHBc746FottJV2h02NwwEKeDCh/UYiHKxZQxvyJhY0R upZLHE4LYGONZSIIZagGvsZbPS1h26NyDUk/k99iazIAvrAlDcQHGM= X-Spam-Report: Spam Report from cliffclavin.cs.rpi.edu (SA:3.2.5): -1.8 ALL_TRUSTED Passed through trusted hosts only via SMTP 3.4 HEADER_SPAM Bulk email fingerprint (header-based) found -0.9 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] 0.2 SARE_HEAD_HDR_APPROV Message headers used which identify spam 0.0 AWL AWL: From: address is in the auto white-list X-Spam-Info: 0.9, local; ALL_TRUSTED,AWL,BAYES_00,HEADER_SPAM,SARE_HEAD_HDR_APPROV X-Spam-Scanned-By: cliffclavin.cs.rpi.edu using SpamAssassin 3.2.5 X-Virus-Scanned-By: cliffclavin.cs.rpi.edu To: (Usenet) Sender: std-c++-request@ruralroute.cs.rpi.edu Approved: james.dennett@gmail.com Message-ID: Newsgroups: comp.std.c++ From: James Kanze Subject: Re: reinterpret_cast(&some_int) Organization: http://groups.google.com References: <31551.76926.qm@web110410.mail.gq1.yahoo.com> Content-Type: text/plain; charset=ISO-8859-1 X-Original-Date: Mon, 11 Oct 2010 13:39:51 -0700 (PDT) X-Submission-Address: std-c++@netlab.cs.rpi.edu X-Scanned-By: MIMEDefang 2.67 on 128.113.126.25 Date: Mon, 11 Oct 2010 18:06:41 CST Lines: 31 X-Usenet-Provider: http://www.giganews.com X-Trace: sv3-5QYyfqZJHfzz1xwFYjILAFWUmduYCLe9KjW8J0EEvStS76vHY+x10bJVQPrceHfLEkEFQs/dEXB+19Y!s/3azZO+8DuDMOnl8Hns5TKtL8792I9iG0HsKBdhvPUn7BUxvMoq+JcOGrKFruBUQfa+z6xSiITH!vWSvt4Ec3NK23YoBclTZo6J8FAU= X-Complaints-To: abuse@giganews.com X-DMCA-Notifications: http://www.giganews.com/info/dmca.html 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: 1.3.40 X-Original-Bytes: 4003 Xref: g2news1.google.com comp.std.c++:3044 On Oct 11, 9:07 pm, Trigve Siver wrote: > I've got the question regarding the reinterpret_cast. Is this defined > by c++0x (I mean current working draft n3126)?: > std::ifstrem input(...); // Opened as binary > .... > int vaue; > input.read(reinterpret_cast(&value), sizeof(value)); // Whereinput > "has" > int It is and it isn't. About all you can say is that you're more or less guaranted to pass the address of the int into input.read. Since this function expects the address of a char buffer, and will write it as such, just about anything can happen after that. > And what about reinterpret_cast(&some_pod)? The same. -- James Kanze -- [ comp.std.c++ is moderated. To submit articles, try just posting with ] [ your news-reader. If that fails, use mailto:std-c++@netlab.cs.rpi.edu] [ --- Please see the FAQ before posting. --- ] [ FAQ: http://www.comeaucomputing.com/csc/faq.html ]