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From:	"Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>
To:	<cygwin-developers AT cygwin DOT com>
Subject:	clearerr
Date:	Fri, 30 Mar 2001 21:33:49 +1000
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X-OriginalArrivalTime:	30 Mar 2001 12:33:43.0231 (UTC) FILETIME=[A81D2CF0:01C0B915]

I'm confused - newlib's clearerr calls __sclearerr, but I can't find
that anywhere. cygwin.dindefines clearerr and _clearerr, but I can't
find them in the source..

In testing the fifo semantics, I've found that the expected behaviour
for a fifo on freeBSD is that clearerr() should re-open the fifo,
allowing further writes to take take place..

i.e.

a reader can loop
clearerr()
read to eof

and the pipe can have multiple separate writers write to the pipe and
exit. Without clearerr or a rewind(), the pipe gets marked eof and stays
eof.

most OS's seem to simply use rewind() to the same effect, so I'm
implementing that. The question I have is: will clearerr() actually call
any cygwin code?

Rob

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