Hi

I've compiled a program with GHC, but when I run it, it runs 
to partial completion (i.e. I get some correct-looking output) and
terminates with:

        Fail: Prelude.(!!): index too large

Great.  Is there any way I can work out where, exactly, the !! failed?
I only use it with constants (0..3) in my own code, so the culprit's
probably hidden in some library function.  Could it be trigged by (++) 
or putStr, perhaps?

Please Cc: me any replies, as I'm not on this list.

-kzm
-- 
If I haven't seen further, it is by standing in the footprints of giants

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