X-Spam-Check-By: sourceware.org Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Subject: RE: C++ name with leading underscore character not Compiling Date: Mon, 16 Apr 2007 14:47:52 +0100 Message-ID: <7231C15EAC2F164CA6DC326D97493C8B01FA065B@exchange35.fed.cclrc.ac.uk> In-Reply-To: <01a501c7802b$1d84f3f0$2e08a8c0@CAM.ARTIMI.COM> References: <1cbe225f0704160234u24b104a5o9b459178e895a5a8 AT mail DOT gmail DOT com> <018901c7800b$5c4ec450$2e08a8c0 AT CAM DOT ARTIMI DOT COM> <4623592C DOT 2000905 AT sh DOT cvut DOT cz> <019c01c7801a$6db51f00$2e08a8c0 AT CAM DOT ARTIMI DOT COM> <7231C15EAC2F164CA6DC326D97493C8B01FA0655 AT exchange35 DOT fed DOT cclrc DOT ac DOT uk> <01a001c7801d$e5d16220$2e08a8c0 AT CAM DOT ARTIMI DOT COM> <7231C15EAC2F164CA6DC326D97493C8B01FA0656 AT exchange35 DOT fed DOT cclrc DOT ac DOT uk> <01a501c7802b$1d84f3f0$2e08a8c0 AT CAM DOT ARTIMI DOT COM> From: "Adye, TJ \(Tim\)" To: "Dave Korn" , X-IsSubscribed: yes Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id l3IEm5Zx010572 Hi Dave, Dave Korn wrote 16 April 2007 14:28:- > > On 16 April 2007 13:14, Adye, TJ (Tim) wrote: > > > I'm a bit surprised this isn't flagged by the compiler (it > > warns you about lots of other non-standard usages), though I guess it > > would be a bit ugly to implement (the compiler would have to > > distinguish between usage in a standard header and other code). > > Actually, the compiler already has a good deal of knowlege > about what constitute system headers and what constitute user > headers: see '-Wsystem-headers' in the docs. So I think that > it wouldn't actually be hard to implement, and I may even > take a look at doing so myself. That would certainly be an interesting improvement. An alternative might be to distinguish between <> and "" includes. My concern was more that the determination of system headers is done in the preprocessor, while the type of identifier is determined later by the compiler. But I guess the latter knows about the former (eg. for error messages). It's a long time since I delved into the GCC sources... Tim. =========================== cut here ============================ Tim Adye T DOT J DOT Adye AT rl DOT ac DOT uk http://hepunx.rl.ac.uk/~adye BaBar/Atlas Groups, Particle Physics Dept, Rutherford Appleton Lab -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/