StaticInitializer.java

class Super {
  static Super C1 = new <warning descr="Referencing subclass Sub from superclass Super initializer might lead to class loading deadlock">Sub</warning>();
  static Object C2 = <warning descr="Referencing subclass Sub from superclass Super initializer might lead to class loading deadlock">Sub</warning>.create();
  static final Sub C3;
  static final Sub C4 = SubFactory.<warning descr="Referencing subclass Sub from superclass Super initializer might lead to class loading deadlock">create</warning>();
  static final String C5 = SubFactory.<warning descr="Referencing subclass Sub from superclass Super initializer might lead to class loading deadlock">create</warning>().toString();
  static Super USED_PRIVATE = new <warning descr="Referencing subclass MyUsedSub from superclass Super initializer might lead to class loading deadlock">MyUsedSub</warning>();

  static Object OK_INSIDE_ANONYMOUS = new Object() {{ Sub s = new Sub(); }};
  static Runnable OK_INSIDE_LAMBDA = () -> { Sub s = new Sub(); };
  static Object OK_UNRELATED = "abc";
  static Super OK_SAME = new Super();
  static Super OK_SAME_ANONYMOUS = new Super(){};
  static Sub[] OK_ARRAY = new Sub[3];
  static Super OK_PRIVATE = new MySub();
  static java.util.List<Sub> OK_GENERICS = new java.util.ArrayList<Sub>();

  static {
    C3 = new <warning descr="Referencing subclass Sub from superclass Super initializer might lead to class loading deadlock">Sub</warning>();
  }

  static void foo() {
    MyUsedSub.foo();
  }

  private static class MySub extends Super { }
  private static class MyUsedSub extends Super {
    static void foo() {
      System.out.println("hello");
    }

  }
}

class Sub extends Super implements Intf {
  static native Object create();
}

class SubFactory {
  static native Sub create();

}

interface Intf {
  Sub ok = new Sub();
}