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From: dold@mitisft.Convergent.COM (Clarence Dold)
Newsgroups: comp.unix.wizards,comp.bugs.sys5
Subject: Re: stdio broken in SysV?
Message-ID: <1410@mitisft.Convergent.COM>
Date: 24 Feb 90 17:37:15 GMT
References: <2010@sauron.Columbia.NCR.COM>
Organization: Convergent Technologies, San Jose, CA
Lines: 21

in article <2010@sauron.Columbia.NCR.COM>, wescott@micky.columbia.ncr.com (Mike Wescott) says:

> I am trying to port a program.  It blows up in fprintf because SysV
> stdio has the implicit assumption that a given file descriptor will
> be used by no more than one stdio stream.

> BTW the "implicit assumption" mentioned above is due to the fact that
> the array _bufendtab[] is indexed by fp->_file rather than by fp-_iob
> or built into the FILE structure itself.

From fopen(3) man page:
"...input may not be directly followed by output" [later stated vice-versa]
"without an intervening fseek or rewind..."

which I believe will straighten out the _bufentab[fd] pointer.

-- 
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Clarence A Dold - dold@tsmiti.Convergent.COM            (408) 435-5293
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