Definition Delta1 V G {C: compspecs}: tycontext :=
  make_tycontext ((1%positive,(Tfunction Tnil Tvoid cc_default))::nil) nil nil Tvoid V G nil.

Lemma match_globvars_in': forall i t vl vs, match_globvars vl vs = true -> In (i,t) vs -> exists g, In (i,g) vl /\ gvar_info g = t.