gripes about error reporting

[John Owens]

> When was the last time
> you got an "IOT trap - core dumped" on, say, your NCR machine?  I got one
> on my Gould PN9000 recently, and I still haven't figured out where it came
> from.

It's rather obscure, but the abort() library function causes a process
to send a SIGIOT to itself....  I believe this was chosen because it
was very rare to get an IOT in a normal user-mode process; you almost
had to be writing in assembler.

	John Owens @ General Electric Company	(+1 804 978 5726)
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