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Date: | Fri, 1 Sep 2006 14:00:41 -0400 |
From: | Christopher Faylor <cgf-no-personal-reply-please AT cygwin DOT com> |
To: | cygwin AT cygwin DOT com |
Subject: | Re: cygwin fork() |
Message-ID: | <20060901180041.GA11672@trixie.casa.cgf.cx> |
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References: | <20060901174713 DOT GE30633 AT ns1 DOT anodized DOT com> <004b01c6cdf0$0c657a60$a501a8c0 AT CAM DOT ARTIMI DOT COM> |
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On Fri, Sep 01, 2006 at 06:57:10PM +0100, Dave Korn wrote: >On 01 September 2006 18:47, clayne AT anodized DOT HIPPO wrote: >>I found the real culprit, which I had also ifdef'd out because it looked >>bogus and crufty: >> >>/* Return 1 if a seek on FD will succeed. */ >>#ifndef __CYGWIN__ >># define fd_is_seekable(fd) (lseek ((fd), 0L, SEEK_CUR) >= 0) >>#else >># define fd_is_seekable(fd) 0 >>#endif /* __CYGWIN__ */ > >Yeeesh. This is a terrible way of dealing with the fact that you can't >seek a stream accurately if you open it in text mode, because of the >ambiguity about whether you've advanced one or two chars through the >underlying file when you see an LF that could perhaps have actually >been a CR/LF. What we really want is AFAIK, Cygwin's lseek should handle seeking on text streams. DJ implemented that years ago. cgf -- 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/
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