stdio broken in SysV?

[Clarence Dold]

in article <2010 at sauron.Columbia.NCR.COM>, wescott at 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...

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