RTS Exhausted max heap size

I've lost the exact error message. But basically, the 
message said to report the error to this project. The 
message said that the RTS system went over the 
maximum heap size of roughly 268000000 bytes. 

The machine I'm running on is running windows 2000 and 
has 1GB of memory. The version of GHC is 6.0.1. The 
code was run with the following compiler switches: 
ghc -O -fvia-c prob.hs -o prob.

I've attached the file prob.hs.

Trac metadata

Trac field	Value
Version	6.0.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	ResolvedFixed
Component	Runtime System
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RTS Exhausted max heap size