;;;; Two rounds of expansion, and the body comes through both of them.
;;;;
;;;; outer expands into a call to inner, which expands again. The forms below
;;;; are written once and marshalled twice, so the second round has to find
;;;; the location the first round gave back rather than the call site it was
;;;; passing through. The note names outer, the macro that was written here,
;;;; and not inner, which nobody wrote.
(defmacro inner [& body]
  `(do ~@body))

(defmacro outer [& body]
  `(inner ~@body))

(defn main [] i32
  (outer
    (let [a 1]
      (+ a nowhere)))
  0)