co_kind = substTy subst (mkPredTy eq_pred)
-- make value vars, instantiating types
- mk_id_var uniq fs ty = mkUserLocal (mkVarOccFS fs) uniq (substTy subst ty) noSrcLoc
+ mk_id_var uniq fs ty = mkUserLocal (mkVarOccFS fs) uniq (substTy subst ty) noSrcSpan
id_bndrs = zipWith3 mk_id_var id_uniqs id_fss arg_tys
exprIsConApp_maybe :: CoreExpr -> Maybe (DataCon, [CoreExpr])