AccessController.doPrivileged and default methods

[Michael Rasmussen]

Hi

I was playing around with having an easy way to have doPrivileged call
void methods via lambdas/method references, and noticed that if you
use AccessController.doPrivileged(PrivilegedAction), and the run
method is implemented as a default method, then you get the following
exception: java.lang.InternalError: No run method

I failed finding anywhere in the documentation stating this should not
be supported, or a bug report about it, so writing/asking here.

See example code below

Kind regards
Michael Rasmussen


//----

package com.test;

import java.security.AccessController;
import java.security.PrivilegedAction;

public class Test {
  interface VoidPrivilegedAction extends PrivilegedAction<Void> {
    void perform();

    @Override
    default Void run() {
      perform();
      return null;
    }
  }

  static void doPrivileged(VoidPrivilegedAction act) {
    AccessController.doPrivileged(act);
  }

  public static void main(String[] args) throws Exception {
    doPrivileged(() -> System.out.println(System.getProperty("java.home")));
  }
}

//----

Exception in thread "main" java.lang.InternalError: No run method
at java.security.AccessController.doPrivileged(Native Method)
at com.test.Test.doPrivileged(Test.java:18)
at com.test.Test.main(Test.java:22)