please test ptys and ttys in the latest snapshot

[Brian Dessent]

Christopher Faylor wrote:

> I've rewritten some of the pty/tty code in the latest snapshot to work
> around problems that Dave Korn raised.  Thanks to Dave for finding the
> problem and for his patch which would have made things work better.

I still see the handle leak in the expect/dejagnu testcase that I posted
earlier.  And in fact now it's worse as ^C won't kill the testcase; it
just hangs after printing this:

...
PASS: gcc.c-torture/compile/20000105-1.c (test for excess errors)
got a INT signal, interrupted by user 

                === gcc Summary ===

# of expected passes            377

If I manually kill the child expect.exe process then it un-hangs and
prints the following:

parent: sync byte write: broken pipe

(This is run from rxvt in case it matters.)

Brian

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