RE: raiseAsync ?

> A program named "Test" sometimes fails with:
> 
> Test: fatal error: raiseAsync
> 
> What does this mean?  How can I diagnose the problem?
> 
> I'm running GHC 5.04.3 on Linux.

It's an internal RTS error (the error message should really indicate
that it's a bug; this has been improved in the HEAD).

Can you provide us with a repeatable test case?

Cheers,
        Simon