sum[1..100000] --> stack overflow in GHC, but not in Hugs?

[Vishal Belsare]

Hi,

Please bear with a very basic question. I am trying to 'learn me a
Haskell for great good' using Hutton's book and some online tutorials.
I started off with Hugs and recently used GHC (to use the 'let a  =
.." syntax interactively, which Hugs doesn't allow perhaps).

There's a simple issue I am having with GHC. sum[1..100000] works fine
on Hugs, however, the same in GHCi generates a stack overflow
exception. I am trying to figure out what's going on.


Prelude> sum[1..100000]
5000050000
Prelude> sum[1..1000000]
*** Exception: stack overflow
Prelude>

________________________

Hugs> sum[1..10000]
50005000
Hugs> sum[1..100000]
5000050000
Hugs>


Thanks in anticipation.

Best regards,
Vishal Belsare

ps: please excuse if the question is too uncool for the list. I come
from an economics background; the markets are bad, I am depressed and
to add to my pain, GHC refuses to let me know sum[1..100000]



-- 
Firstly, I propose for myself the rule that the obviousness of a
proposition does not free me from the obligation to continue searching
for a proof of it, at least until I clearly realize that absolutely no
proof could ever be required, and why.

~ Bernhard Bolzano