panic with bad data/class definition.

This malformed program causes a panic in ghc-6.4

class SClass a where
 sFun :: a -> SData
 
data SData
	= SCon SClass

email: Ben.Lippmeier@anu.edu.au

Trac metadata

Trac field	Value
Version	6.4
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	ResolvedFixed
Component	Compiler (Type checker)
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