SPECIALIZE pragma and polymorphic instances

Given a polymorphic specialization like

        f :: (Storable a, Eq a) => T a
        {-# SPECIALIZE f :: T (Ptr a) #-}

GHC does not produce the requested polymorphic
specialization, but if we use f at the ground types T
(Ptr Foo) and T (Ptr Bar), we get a specialization for
each, and these are essentially the same.

ross@soi.city.ac.uk

Trac metadata

Trac field	Value
Version	6.2.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	ResolvedFixed
Component	Compiler
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