Set Bullet Behavior "Strict Subproofs".
Instance CompSpecs : compspecs. make_compspecs prog. Defined.
Definition Vprog : varspecs. mk_varspecs prog. Defined.
Definition load_acq_spec := DECLARE _load_acq load_acq_spec.
Definition store_rel_spec := DECLARE _store_rel store_rel_spec.
Definition surely_malloc_spec :=
DECLARE _surely_malloc
WITH n:Z
PRE [ _n OF tuint ]
PROP (0 <= n <= Int.max_unsigned)
LOCAL (temp _n (Vint (Int.repr n)))
SEP ()
POST [ tptr tvoid ] EX p:_,
PROP ()
LOCAL (temp ret_temp p)
SEP (malloc_token Tsh n p * memory_block Tsh n p).
Definition tnode := Tstruct _node noattr.
Definition has_size : {x : Z | x = 8}.
Definition size := proj1_sig has_size.

Lemma size_def : size = 8.