[Template-haskell] problem with quasi-quoting instance declaration

Ganesh Sittampalam Ganesh.Sittampalam@comlab.ox.ac.uk
Thu, 11 Sep 2003 16:35:40 +0100 (BST)

Using 6.0.1 or the 20030903 CVS snapshot:

ghc-6.1: panic! (the `impossible' happened, GHC version 6.1):
        Failed binder lookup: GHCziShow.show {- v r4H -}

If I try to compile the following code. Commenting out the line defining
show (but not the instance line itself) makes the error go away.



module TH2 where

code =
   data Foo = Foo

   instance Show Foo where
     show Foo = "foo"