zonk_b (n,e) = zonkExpr env e `thenM` \ e' ->
returnM (n,e')
-zonkExpr env (HsReify r) = returnM (HsReify r) -- Nothing to zonk; only top
- -- level things can be reified (for now)
zonkExpr env (HsSplice n e loc) = WARN( True, ppr e ) -- Should not happen
returnM (HsSplice n e loc)