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From: Christopher Faylor <cgf@redhat.com> To: nobody@gcc.gnu.org Cc: gcc-prs@gcc.gnu.org, Subject: Re: bootstrap/5149: gcc-20011217 reads beyond EOF on cygwin Date: Fri, 21 Dec 2001 09:26:00 -0000 [thread overview] Message-ID: <20011221172600.20516.qmail@sources.redhat.com> (raw) The following reply was made to PR bootstrap/5149; it has been noted by GNATS. From: Christopher Faylor <cgf@redhat.com> To: Werner Tuchan <tuwn@gmx.net> Cc: Neil Booth <neil@daikokuya.demon.co.uk>, 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 Date: Fri, 21 Dec 2001 12:20:07 -0500 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
next reply other threads:[~2001-12-21 17:26 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2001-12-21 9:26 Christopher Faylor [this message] -- strict thread matches above, loose matches on Subject: below -- 2002-06-19 4:26 neil 2001-12-21 23:36 Zack Weinberg 2001-12-21 10:56 Neil Booth 2001-12-21 6:46 Werner Tuchan 2001-12-20 11:16 Neil Booth 2001-12-20 11:06 Zack Weinberg 2001-12-20 10:36 Neil Booth 2001-12-20 6:46 Werner Tuchan 2001-12-19 16:20 neil 2001-12-18 3:56 tuwn
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