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Posted to issues@maven.apache.org by "Sergey Chernov (JIRA)" <ji...@apache.org> on 2019/04/05 18:56:00 UTC
[jira] [Updated] (MNG-6626) NullPointerException in
DefaultExceptionHandler
[ https://issues.apache.org/jira/browse/MNG-6626?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sergey Chernov updated MNG-6626:
--------------------------------
Affects Version/s: 3.1.0
> NullPointerException in DefaultExceptionHandler
> -----------------------------------------------
>
> Key: MNG-6626
> URL: https://issues.apache.org/jira/browse/MNG-6626
> Project: Maven
> Issue Type: Bug
> Components: core
> Affects Versions: 3.1.0, 3.6.0
> Reporter: Sergey Chernov
> Priority: Major
> Attachments: original-exception.txt
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> `DefaulExceptionHandler` classifies errors on goal execution. There is a special case when the root cause is `NoClassDefFoundError` with null message, it causes NPE with the stacktrace:
> {code}
> java.lang.NullPointerException
> at org.apache.maven.exception.DefaultExceptionHandler.getReference (DefaultExceptionHandler.java:212)
> at org.apache.maven.exception.DefaultExceptionHandler.getReference (DefaultExceptionHandler.java:231)
> at org.apache.maven.exception.DefaultExceptionHandler.handle (DefaultExceptionHandler.java:101)
> at org.apache.maven.exception.DefaultExceptionHandler.handleException (DefaultExceptionHandler.java:96)
> at org.apache.maven.cli.MavenCli.execute (MavenCli.java:972)
> at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
> at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
> at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke (Method.java:498)
> at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
> at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
> at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
> at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
> {code}
> The problem here is that the real exception is lost and it's even not present in debug log mode. The full root exception is attached to the ticket (original-exception.txt).
>
> The reason for this defect is trivial: DefaultExceptionHandler.java:212 does not have a null check for getMessage
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