X-Recipient: archive-cygwin@delorie.com X-Spam-Check-By: sourceware.org From: "Dave Korn" To: References: <000201c93ac7$38265930$4001a8c0@mycomputer> <490A30C8.5000107@sh.cvut.cz> <001601c93b31$a961b940$4001a8c0@mycomputer> <003e01c93b42$e92a17a0$4001a8c0@mycomputer> <490AE8A0.8090009@sh.cvut.cz> <001a01c93b4d$617de150$4001a8c0@mycomputer> <490AF1E3.3020308@sh.cvut.cz> <002001c93b52$3b2b2490$4001a8c0@mycomputer> Subject: RE: cygwin g++ strictness Date: Fri, 31 Oct 2008 12:22:23 -0000 Message-ID: <028e01c93b53$53e17a60$9601a8c0@CAM.ARTIMI.COM> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" X-Mailer: Microsoft Office Outlook 11 In-Reply-To: <002001c93b52$3b2b2490$4001a8c0@mycomputer> Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id m9VCN3ej026418 John Emmas wrote on 31 October 2008 12:15: > ----- Original Message ----- > From: "Václav Haisman" > Sent: 31 October 2008 11:54 > Subject: Re: cygwin g++ strictness >> >> That has nothing to do with your problem. Reference to int and reference >> to long are two totally unrelated types. The implicit conversions of >> C/C++ only apply to values, not references. >> > Ah, fair enough, I'd never thought about it but it's obvious now you've > mentioned it. > > >> >> No, casting is not an option, really. You have references. What do you >> intend to cast x and y to? >> > Maybe it's a happy accident but this seems to compile and link (and work) > > int AddTwoInts (int& a, int& b); > > int32_t x = 4; > int32_t y = 5; > int z = AddTwoInts ((int&)x, (int&)y); // Compiles, links and works You are creating temporaries here. If AddTwoInts modifies either of the int references it has, that will only change the temporaries; x and y will /not/ be modified. cheers, DaveK -- Can't think of a witty .sigline today.... -- 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/