hsSigFVs other = emptyFVs
----------------
-conDeclFVs (L _ (ConDecl _ tyvars context details))
+-- XXX - autrijus - handle return type for GADT
+conDeclFVs (L _ (ConDecl _ _ tyvars context details _))
= delFVs (map hsLTyVarName tyvars) $
extractHsCtxtTyNames context `plusFV`
conDetailsFVs details
+
+{-
-- gaw 2004
conDeclFVs (L _ (GadtDecl _ ty))
= extractHsTyNames ty
+-}
conDetailsFVs (PrefixCon btys) = plusFVs (map bangTyFVs btys)
conDetailsFVs (InfixCon bty1 bty2) = bangTyFVs bty1 `plusFV` bangTyFVs bty2