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Date:	Mon, 27 Aug 2012 23:34:18 -0700
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To:	cygwin AT cygwin DOT com
Subject:	Re: fork() and file descriptors with un-flushed output
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On 8/27/2012 11:26 PM, thoni56 wrote:
> Is this a known behaviour? Unavoidable in cygwin? (Obviously not, if I'm =
on
> the right track with my guesswork...) If it is a bug, will it be fixed?

This behavior isn't Cygwin-specific. In fact, it's longstanding Unix behavi=
or.
(The buffering problem is one reason you should, generally speaking, use
_exit(2), not exit(3), in a forked child.) Calling fflush(NULL) before the =
fork
will flush all stdio buffers for you and eliminate the problem, assuming yo=
u're
single-threaded.


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