Instance CompSpecs : compspecs.Definition Vprog : varspecs.Definition t_struct_b := Tstruct _b noattr.Definition update22 (i: int) (v: reptype' t_struct_b) : reptype' t_struct_b :=
   (fst v, (fst (snd v), i)).

Lemma body_set: semax_body Vprog Gprog f_set set_spec.