From -5833906413952662829 X-Google-Thread: f78e5,79ca29fdef991a75 X-Google-Attributes: gidf78e5,public X-Google-Language: ENGLISH,ASCII 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, 21 Mar 2007 18:40:11 -0500 Return-Path: X-Authentication-Warning: mulga.csse.unimelb.edu.au: fjh set sender to devnull@stump.algebra.com using -f X-Robomod: STUMP, ichudov@algebra.com (Igor Chudov) X-Original-To: std-c++@mailman.ucar.edu Delivered-To: std-c++@mailman.ucar.edu From: "=?iso-8859-1?q?Daniel_Kr=FCgler?=" Newsgroups: comp.std.c++ Subject: Re: Address of member in class scope Organization: http://groups.google.com Message-ID: <1174519543.189471.264180@p15g2000hsd.googlegroups.com> References: <1174158249.879833.103950@p15g2000hsd.googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" X-Complaints-To: groups-abuse@google.com User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3,gzip(gfe),gzip(gfe) Complaints-To: groups-abuse@google.com Injection-Info: p15g2000hsd.googlegroups.com; posting-host=89.48.253.49; posting-account=0YhmiQ0AAABRDjD_6coNmBVB3rgPlaOq X-Virus-Scanned: amavisd-new at ucar.edu X-Virus-Scanned: amavisd-new at csse.unimelb.edu.au Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by mulga.csse.unimelb.edu.au id l2LNQ0bi021332 Approved: Fergus Henderson , moderator of comp.std.c++ X-Virus-Scanned: amavisd-new at csse.unimelb.edu.au Date: Wed, 21 Mar 2007 18:34:34 CST Lines: 52 NNTP-Posting-Host: 65.182.171.162 X-Trace: sv3-hihJRuZe3f4drSOEvW42YYsIvsLH4mCA8Qlnzea7P0RhqymmNpSvLsE/FVfz5aRHzLIx/slkBsCrdn+!C/osk+Ry8EJ82eedOEOrNUeNWmtCUKeA9YUpXkBY2keSXVfceADYEb0Oh0sXDI7v/6TRAJEuAc8F!p7UZ09WuLpL5+76jmXPOGBYg2cEp5edtFZxvj6sAjvo= 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: 1.3.34 Xref: g2news1.google.com comp.std.c++:8166 marwan.taher@gmail.com schrieb: > Can someone tell me why the following code won't compile? I am taking > the address of a class member within the class's declaration. This > works for a pointer to member function, but fails for a pointer to > data member. Is my compiler at fault? Or does the standard explicitly > forbid this? The standard does not explicitely forbid that. IMO the code (commented or uncommented) is fine, therefore using 3.3.1/4 as reference, which says "After the point of declaration of a class member, the member name can be looked up in the scope of its class. [Note: this is true even if the class is an incomplete class. For example, struct X { enum E { z = 16 }; int b[X::z]; // OK }; -end note]" Additionally I also see no reasons why your example should violate anyone of the requirements described in 3.3.6 ([basic.scope.class]), especially not for 2) "A name N used in a class S shall refer to the same declaration in its context and when re-evaluated in the completed scope of S. No diagnostic is required for a violation of this rule." or 3) "If reordering member declarations in a class yields an alternate valid program under (1) and (2), the program is ill-formed, no diagnostic is required." I also observed that existing implementations differ here. E.g. both Comeau and mingw 3.4 accept the code, but VS2005-SP1 rejects it (I guess you have tested the last one?). Greetings from Bremen, Daniel Kr�gler --- [ 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.comeaucomputing.com/csc/faq.html ]