Ticket #3690 (closed bug: fixed)
GHC panics on a crazy type signature
x :: [Enum a => (forall a. Num a => a)] x = 
I have NO idea what that would mean or whatever it makes sense at all, but it fails with:
: panic! (the 'impossible' happened) (GHC version 6.10.4 for i386-unknown-mingw32): TcTyFuns.flattenType: unexpected PredType
And it said I should report it. :)
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