Issue

• The following WARN log happens during the application deployment when the packaged library contains module-info.class (for example, log4j2 2.10.0 or later):

WARN  [org.jboss.as.server.deployment] (MSC service thread 1-5) WFLYSRV0003: Could not index class META-INF/versions/9/module-info.class at /content/example.war/WEB-INF/lib/log4j-api-2.11.1.jar: java.lang.IllegalStateException: Unknown tag! pos=4 poolCount = 32
    at org.jboss.jandex.Indexer.processConstantPool(Indexer.java:1417)
    at org.jboss.jandex.Indexer.index(Indexer.java:1451)
    at org.jboss.as.server.deployment.annotation.ResourceRootIndexer.indexResourceRoot(ResourceRootIndexer.java:99)
    at org.jboss.as.server.deployment.annotation.AnnotationIndexProcessor.deploy(AnnotationIndexProcessor.java:51)
    at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:165)
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:2032)
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1955)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

• Trying to deploy an application depending on threeten-extra-1.3.2.jar (packaged into WEB-INF/lib folder) in JBoss EAP 7.1 results in

WARN  [org.jboss.as.server.deployment] (MSC service thread 1-5) WFLYSRV0003: Could not index class module-info.class at /content/application.war/WEB-INF/lib/threeten-extra-1.3.2.jar: java.lang.IllegalStateException: Unknown tag! pos=4 poolCount = 16
        at org.jboss.jandex.Indexer.processConstantPool(Indexer.java:1417)
        at org.jboss.jandex.Indexer.index(Indexer.java:1451)
        at org.jboss.as.server.deployment.annotation.ResourceRootIndexer.indexResourceRoot(ResourceRootIndexer.java:99)
        at org.jboss.as.server.deployment.annotation.AnnotationIndexProcessor.deploy(AnnotationIndexProcessor.java:51)
        at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:165)
        at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:2032)
        at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1955)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)