[ ghc-Bugs-973766 ] ghci coredumps

Bugs item #973766, was opened at 2004-06-16 08:14
Message generated for change (Comment added) made by simonmar
You can respond by visiting: 
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Category: libraries/base
Group: None
Status: Open
Resolution: None
Priority: 1
Submitted By: Josef Svenningsson (josefs)
>Assigned to: Simon Marlow (simonmar)
Summary: ghci coredumps

Initial Comment:
When asked to create a sufficiently large array ghci 
coredumps.

\begin{code}
import Data.Array.ST
import Control.Monad.ST
import GHC.Base

example = runST (do arr <- newArray (minInt,maxInt) 
False
                    go arr)
  where go :: STArray s Int Bool -> ST s Bool
        go arr = readArray arr 3
\end{code}

Load this into ghci and type 'example'.

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>Comment By: Simon Marlow (simonmar)
Date: 2004-06-16 10:59

Message:
Logged In: YES 
user_id=48280

There may be several problems here.   One is integer
overflow in Storage.c:allocate() when calculating the number
of blocks for the allocation request.  

Another problem is integer overflow in rangeSize: the
rangeSize for (minInt,maxInt) doesn't fit in an Int.  I'm
not sure what the correct outcome should be.  I'll look into
this some more later.


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