Bug explanation.

examples/bugs.carp

@@ -146,7 +146,20 @@
 ;;       (set! x 11)
 ;;       (println* x))))
 
+
+
+
+
+
+;; The ref error is detected when the forms inside (= ...) are reversed.
+;; Right now the lifetime (that is shared by both arguments to =) becomes
+;; set to [111], which is alive for the rest of the scope.
+;; So the memory error inside (let ...) doesn't get detected since the
+;; lifetime is alive before, during, and after its scope.
 (defn f []
-  (= $[1 2 4]
-     (let [xs $[1 2 3]]
-       xs)))
+  (=
+     &[111]
+     (let [xs &[222]]
+       xs)
+
+     ))