[TUHS] Source code abundance?

Steve Johnson scj at yaccman.com
Tue Mar 7 09:31:37 AEST 2017

I can attest to at least one case where AT&T attempted to see whether
its Unix code had been stolen.  A Unix look-alike came to AT&T's
attention, and they wanted to get a sense of whether the code had been
copied before bringing out the big legal guns.   I was one of
several people asked to log into the system and see what I could
figure out.  They particularly wanted me to look at their Yacc,
because they assumed that would be hard to duplicate.

So I spent an interesting hour checking it out.   The first thing I
did was to look to see whether some of my bugs or unadvertised
features were in the program, and they weren't.   Then I threw a
couple of difficult cases at it, and found a couple of bugs in their
code.  And besides, it was VERY slow.  So I concluded it was a
reimplementation.   I gather that was the consensus of others as
well, and AT&T backed off.


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