simple program crash (GHC 5.02, Hugs)

[Matthew Bentham]

On Fri, 21 Dec 2001, Oleg Galbert wrote:

> I'm a newbie in Haskell. 
> I tryed to compare performance of GHC compiled code and Ocaml compiled code
> on a small example:
> 
> test n cosx
>         | n==0 = cosx
>         | otherwise = test (n-1) (cosx+cos(cosx))
> 
> main = print ( test  10000000 0.0 )  
> 
> I compiled it on Win NT :
> 
> ghc -o test_haskell.exe test_haskell.hs
>      
> When I run the program I got the following message:
> 
> Stack space overflow: current size 1048576 bytes.
> Use `+RTS -Ksize' to increase it.
> 
> Hugs 98 (December 2001) version just fails with "Application Error" message.
> 
> Does a stack usage depends on number of recursive calls? Is there a tail
> recursion optimization?
> 
> In Ocaml version of this program everything goes well.
> The program produced the result without any complains.
> 
> Oleg Galbert
> 
> 
> 
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> 

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Matthew Bentham, ART ltd., Mount Pleasant House, Cambridge CB3 ORN
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