PS. compiler change, was: UTF-8 decoding error

[Christian Maeder]

Christian Maeder schrieb:
> [ 15 of 400] Compiling Data.Generics2.Instances (
> syb-generics/Data/Generics2/Instances.hs,
> syb-generics/Data/Generics2/Instances.o )
> 
> /tmp/ghc5667_0/ghc5667_248.hspp:299:17:
>     Couldn't match expected type `forall a1. (Data ctx a1) => c (t a1)'
>            against inferred type `c1 (t1 a1)'
>       Expected type: (forall a2. (Data ctx a2) => c (t a2))
>                      -> Maybe (c [a])
>       Inferred type: c1 (t1 a1) -> Maybe (c1 (t' a1))
>     In the expression: gcast1
>     In the definition of `dataCast1': dataCast1 _ = gcast1

This particular error is fixed by writing:

   dataCast1 _ f = gcast1 f

(for "dataCast1 _ = gcast1")

C.