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Date:	Sun, 3 Jan 2010 14:11:21 -0500
From:	Christopher Faylor <cgf-use-the-mailinglist-please AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: select() and named pipes
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On Sun, Jan 03, 2010 at 05:58:46PM +0100, Enrico Forestieri wrote:
>On Wed, Dec 23, 2009 at 03:12:19AM +0100, Enrico Forestieri wrote:
>> On Tue, Dec 22, 2009 at 07:37:14PM -0500, Christopher Faylor wrote:
>> > On Tue, Dec 22, 2009 at 11:43:09PM +0100, Enrico Forestieri wrote:
>> > >I am experiencing a problem with select() and named pipes in cygwin
>> > >1.7.  The attached test case segfaults on the select() call, but works
>> > >fine with both cygwin 1.5 and linux.
>> > 
>> > Thanks for the test case.  This should be fixed in the next Cygwin
>> > snapshot but it will not be fixed (of course?) in 1.7.1 which is now
>> > available from the Cygwin web site.
>> 
>> I confirm that with the 20091222 snapshot the crash does not occur
>> anymore. However, there's still something wrong. Indeed, running the
>> test case in a terminal and issuing "echo foo > /tmp/pipe" from another
>> one, the program exits without printing the expected "foo".
>
>Apparently, the problem is due to the O_NONBLOCK flag used in the open()
>call. Taking away O_NONBLOCK, everything works.

I'm still tinkering with fifos.  I hope to have some fixes for Cygwin 1.7.2
but no guarantees.

cgf

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