;;;; A slice kept past its arena's free-all. A dev build fills the released
;;;; bytes with 0xDEADBEEF, so the element reads -559038737; a release build
;;;; leaves the old value, 7.
(defn main [] i32
  (let [a (arena-new 4096) v (vec-new i32 a)]
    (push v 7)
    (let [s (slice v)] (free-all a) (println (at s 0))))
  0)