A Clojure library demonstrating that Java static initialization code runs when AOT-compiling Clojure code that extends Java classes using proxy or gen-class.

$ lein clean
$ lein compile

Notice the line Running static initializers! in compiler output. AOT-compiling either clojure-static-initialization.gen-class-demo or clojure-static-initialization.proxy-demo will cause the static initialization code to run; You can verify this by disabling AOT compilation for either of the namespace in project.clj.

Switching to a patched version of Clojure using the patch in CLJ-1743 causes the static initialization code not to be run.