Was unsure whether to post to clojure or clojure-dev, but here goes.

I was surprised to learn today that count silently overflows to negative 
numbers:

jenome.core> (time (count (range (*' 1000 1000 1000 3))))
"Elapsed time: 375225.663 msecs"
-1294967296
jenome.core> 

I can easily get around this with my own (non-overflowing) count function, 
but would it make sense for count throw an ArithmeticException on overflow, 
with *unchecked-math* set to false (as it is in my case)?

Curiously,
John

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