Date: Fri, 29 Jun 2001 08:49:15 +0800 (CST) From: Tai-hwa Liang <avatar@mmlab.cse.yzu.edu.tw> To: John Polstra <jdp@polstra.com> Cc: <stable@freebsd.org> Subject: Re: lseek(SEEK_END) then read()... bug of feature? Message-ID: <Pine.BSF.4.33.0106290847460.79626-100000@www.mmlab.cse.yzu.edu.tw> In-Reply-To: <200106281452.f5SEqxf93857@vashon.polstra.com>
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On Thu, 28 Jun 2001, John Polstra wrote:
[...]
> > off_t offset;
> > int ret, fd = open("/kernel", O_RDONLY);
> >
> > offset = 0 - sizeof(int);
>
> Due to C's type promotion rules, this assigns the value 4294967292
> to "offset". Change it to this:
>
> offset = (off_t)0 - sizeof(int);
>
> and your program works fine.
>
Ah, that did the trick! Thanks a lot for your information.
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