Infinite loop in JBoss 7.1.1 on Java 8

InfiniteLoop.java

package org.jboss.as.server;

import java.util.concurrent.ConcurrentSkipListSet;
import org.jboss.as.server.deployment.DeploymentPhaseContext;
import org.jboss.as.server.deployment.DeploymentUnit;
import org.jboss.as.server.deployment.DeploymentUnitProcessingException;
import org.jboss.as.server.deployment.DeploymentUnitProcessor;
import org.jboss.as.server.deployment.Phase;
import org.jboss.as.server.deployment.SubDeploymentProcessor;
import org.jboss.as.server.deployment.annotation.AnnotationIndexProcessor;
import org.jboss.as.server.deployment.module.DeploymentRootExplodedMountProcessor;
import org.jboss.as.server.deployment.module.DeploymentRootMountProcessor;
import org.jboss.as.server.deployment.module.ManifestAttachmentProcessor;
import org.jboss.as.server.deployment.module.ModuleIdentifierProcessor;

public class InfiniteLoop {

    public static void main(String[] args) {
        ConcurrentSkipListSet<RegisteredProcessor> set = new ConcurrentSkipListSet<RegisteredProcessor>();

        set.add(new RegisteredProcessor(Phase.STRUCTURE_SERVICE_MODULE_LOADER, new DeploymentUnitProcessor() {
            public void deploy(DeploymentPhaseContext phaseContext) throws DeploymentUnitProcessingException {
            }

            public void undeploy(DeploymentUnit context) {
            }
        }));
        set.add(new RegisteredProcessor(Phase.STRUCTURE_EXPLODED_MOUNT, new DeploymentRootExplodedMountProcessor()));
        set.add(new RegisteredProcessor(Phase.STRUCTURE_MOUNT, new DeploymentRootMountProcessor()));
        set.add(new RegisteredProcessor(Phase.STRUCTURE_MANIFEST, new ManifestAttachmentProcessor()));
        set.add(new RegisteredProcessor(Phase.STRUCTURE_ADDITIONAL_MANIFEST, new ManifestAttachmentProcessor()));
        set.add(new RegisteredProcessor(Phase.STRUCTURE_SUB_DEPLOYMENT, new SubDeploymentProcessor()));
        set.add(new RegisteredProcessor(Phase.STRUCTURE_MODULE_IDENTIFIERS, new ModuleIdentifierProcessor()));
        set.add(new RegisteredProcessor(Phase.STRUCTURE_ANNOTATION_INDEX, new AnnotationIndexProcessor()));

        System.out.println("Items in set:" + set.size());
    }

    static final class RegisteredProcessor implements Comparable<RegisteredProcessor> {
        private final int priority;
        private final DeploymentUnitProcessor processor;

        private static int i = 1;

        RegisteredProcessor(final int priority, final DeploymentUnitProcessor processor) {
            this.priority = priority;
            this.processor = processor;
        }

        public int compareTo(final RegisteredProcessor o) {
            final int rel = Integer.signum(priority - o.priority);
            // BUG below
            return rel == 0 ? Integer.signum(processor.getClass().getName().compareTo(o.getClass().getName())) : rel;
        }
    }
}