Xref: utzoo comp.unix.wizards:20754 comp.bugs.sys5:1231
Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!mips!prls!pyramid!ctnews!mitisft!dold
From: dold@mitisft.Convergent.COM (Clarence Dold)
Newsgroups: comp.unix.wizards,comp.bugs.sys5
Subject: Re: stdio broken in SysV?
Message-ID: <1408@mitisft.Convergent.COM>
Date: 24 Feb 90 17:22:48 GMT
References: <2010@sauron.Columbia.NCR.COM>
Organization: Convergent Technologies, San Jose, CA
Lines: 16

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

> 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.

This same _bufentab[] problem causes an array of difficulties if the system
NFILE is higher than NOFILES for stdio.  If there is a mix of open(2) and
fopen(3), streams can use a pointer off the end of the array, into some
unknown data space.  Might work, might not...

-- 
---
Clarence A Dold - dold@tsmiti.Convergent.COM            (408) 435-5293
               ...pyramid!ctnews!tsmiti!dold        FAX (408) 435-3105
               P.O.Box 6685, San Jose, CA 95150-6685         MS#10-007