[jboss-jira] [JBoss JIRA] (WFCORE-3816) ExtensionIndexService throws NPE while reading extensions on the IBM jdk

ExtensionIndexService throws NPE while reading extensions on the IBM jdk ------------------------------------------------------------------------ Key: WFCORE-3816 URL: https://issues.jboss.org/browse/WFCORE-3816 Project: WildFly Core Issue Type: Bug Components: Server Affects Versions: 5.0.0.Alpha7 Environment: {noformat} java version "1.8.0_161" Java(TM) SE Runtime Environment (build 8.0.5.11 - pxa6480sr5fp11-20180326_01(SR5 FP11)) IBM J9 VM (build 2.9, JRE 1.8.0 Linux amd64-64 Compressed References 20180309_380776 (JIT enabled, AOT enabled) OpenJ9 - 49fcaf39 OMR - 5cbbadf IBM - 4453dac) JCL - 20180319_01 based on Oracle jdk8u161-b12 {noformat} Reporter: Petr Kremensky Assignee: Petr Kremensky https://github.com/wildfly/wildfly-core/blob/5.0.0.Alpha7/server/src/main... reads extensions from jars manifest like: {code:java} File jar = new File(<jar>) final JarFile jarFile = new JarFile(jar); final Manifest manifest = jarFile.getManifest(); final Attributes mainAttributes = manifest.getMainAttributes(); ... {code} The latest [IBM jdk 8.0-5.11|https://developer.ibm.com/javasdk/downloads/sdk8/] (and possible some of previous releases) contains some jars \[1\] where {{manifest.getMainAttributes();}} throws NPE, causing deploy operation of archive with Extension-List to fail, see WFLY-10349. \[1\] ibm-java-8.0-5.11/jre/lib/ext/traceformat.jar: java.lang.NullPointerException ibm-java-8.0-5.11/jre/lib/ext/dtfj.jar: java.lang.NullPointerException ibm-java-8.0-5.11/jre/lib/ext/dtfjview.jar: java.lang.NullPointerException