Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Date: Fri, 21 Dec 2001 12:20:07 -0500 From: Christopher Faylor To: Werner Tuchan Cc: Neil Booth , neil@gcc.gnu.org, gcc-bugs@gcc.gnu.org, gcc-gnats@gcc.gnu.org, cygwin@cygwin.com Subject: Re: bootstrap/5149: gcc-20011217 reads beyond EOF on cygwin Message-ID: <20011221172007.GA14954@redhat.com> Mail-Followup-To: Werner Tuchan , Neil Booth , neil@gcc.gnu.org, gcc-bugs@gcc.gnu.org, gcc-gnats@gcc.gnu.org, cygwin@cygwin.com References: <20011220002004.23509.qmail@sources.redhat.com> <000701c18964$fad2d2e0$fb4d0ed4@softron.de> <20011220183323.B3065@daikokuya.demon.co.uk> <002b01c18a2d$aeb7d850$fb4d0ed4@softron.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <002b01c18a2d$aeb7d850$fb4d0ed4@softron.de> User-Agent: Mutt/1.3.23.1i On Fri, Dec 21, 2001 at 03:42:14PM +0100, Werner Tuchan wrote: >> Weird. The bytes after EOF are a mixture of NULs and 0xc0. Is 0xc0 >> of special significance in Windows? Is your version of cygwin the >> latest? I recall some talk about mmap bugs in cygwin. > >The cygwin version is pretty recent. Two weeks old or so. The data after EOF >is only garbage. I've seen different values than 0x0 or 0xc0 in the error >messages. Windows propably doesn't clear the page before mapping the file >onto it. There is likely a different behaviour here between Windows ME and >NT. Can I ask why we'd be reading beyond EOF? Is it guaranteed that bytes beyond EOF will be zero on UNIX? cgf -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/