UIDefaults/6795356/bug6795356.java

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/*
 * @test
 * @bug 6795356
 * @summary Leak caused by javax.swing.UIDefaults.ProxyLazyValue.acc
 * @author Alexander Potochkin
 * @library ../../regtesthelpers
 * @build Util
 * @run main bug6795356
 */

import java.lang.ref.WeakReference;
import java.security.ProtectionDomain;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.security.AccessControlContext;
import java.util.LinkedList;
import java.util.List;
import javax.swing.*;

public class bug6795356 {
    volatile static WeakReference<ProtectionDomain> weakRef;

    public static void main(String[] args) throws Exception {

        ProtectionDomain domain = new ProtectionDomain(null, null);

        AccessController.doPrivileged(new PrivilegedAction<Object>() {
            public Object run() {

                // this initialize ProxyLazyValues
                UIManager.getLookAndFeel();

                return null;
            }
        }, new AccessControlContext(new ProtectionDomain[]{domain}));

        weakRef = new WeakReference<ProtectionDomain>(domain);
        domain = null;

        Util.generateOOME();

        if (weakRef.get() != null) {
            throw new RuntimeException("Memory leak found!");
        }
        System.out.println("Test passed");
    }
}