Hi,

Compiling the following code throws an exception as below. I looked at
compiler.clj and don't understand the reason for this error. I am not
sure what a "local var" is and I would think "x" would be a field
which should be settable. Are mutable deftype fields not supported in
ClojureScript?

(defprotocol foo-p (bar [this]))
(deftype foo [^{:volatile-mutable true} x]
  foo-p
  (bar [this] (set! x nil)))

Exception in thread "main" java.lang.RuntimeException:
java.lang.AssertionError: Assert failed: Can't set! local var
(nil? (-> env :locals target))
        at clojure.lang.Util.runtimeException(Util.java:153)
        at clojure.lang.Compiler.eval(Compiler.java:6417)
....

Thanks,

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