Definition var_name (V: Type) (bdec: ident * globvar V) : ident :=
   fst bdec.Definition no_dups (F V: Type) (fdecs: list (ident * F)) (bdecs: list (ident * globvar V)) : Prop :=
  list_norepet (map (@fst ident F) fdecs ++ map (@var_name V) bdecs).

Lemma eventval_list_match_fun: forall {se a a' t v}, Events.eventval_list_match se a t v -> Events.eventval_list_match se a' t v -> a=a'.