Hint Resolve closed_wrt_isCastResultType closed_wrtl_isCastResultType : closed.

Lemma closed_wrt_tc_temp_id :
forall {cs: compspecs} Delta S e id t, expr_closed_wrt_vars S e ->
expr_closed_wrt_vars S (Etempvar id t) ->
closed_wrt_vars S (tc_temp_id id t Delta e).