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+{- LANGUAGE TemplateHaskell #-}
+
+-- Template Haskell type splices
+module T3177 where
+
+f :: $(id [t| Int |])
+f = 3
+
+class C a where
+ op :: a -> a
+
+instance C a => C ($([t| Maybe |]) a) where
+ op x = fmap op x
+