Excellent. Years ago (15-20?) I wrote a program with the bug he mentions at the end. Way before Stack Overflow was a Google away. I could not work out why it cr

Excellent. Years ago (15-20?) I wrote a program with the bug he mentions at the end. Way before Stack Overflow was a Google away. I could not work out why it crashed. I ended up rewriting it and it worked, but never understood what the bug was (in my mind it has been logged as 'don't extern arrays' ever since). I just read that and ah-ha!