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https://issues.apache.org/jira/browse/MSHADE-337?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Struberg resolved MSHADE-337.
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Fix Version/s: 3.2.2
Resolution: Fixed
> Relocation cannot process class file version 58 JARs
> ----------------------------------------------------
>
> Key: MSHADE-337
> URL: https://issues.apache.org/jira/browse/MSHADE-337
> Project: Maven Shade Plugin
> Issue Type: Bug
> Affects Versions: 3.2.1
> Reporter: Jordan Zimmerman
> Assignee: Karl Heinz Marbaise
> Priority: Major
> Fix For: 3.2.2
>
> Attachments: shade-bug.zip
>
>
> I was playing around with Java 14 and was making a shaded JAR. The shade
> plugin seems to work fine but if I add a relocation it throws:
> {noformat}
> java.lang.IllegalArgumentException: Unsupported class file major version 58
> {noformat}
> Steps to Reproduce:
> * Unzip the enclosed attachment
> * Make sure Java 14 is installed and JAVA_HOME points at it
> * Run {{mvn package}}
> Stacktrace:
> {noformat}
> Caused by: java.lang.IllegalArgumentException: Unsupported class file major
> version 58
> at org.objectweb.asm.ClassReader.<init> (ClassReader.java:184)
> at org.objectweb.asm.ClassReader.<init> (ClassReader.java:166)
> at org.objectweb.asm.ClassReader.<init> (ClassReader.java:152)
> at org.objectweb.asm.ClassReader.<init> (ClassReader.java:273)
> at org.apache.maven.plugins.shade.DefaultShader.addRemappedClass
> (DefaultShader.java:438)
> at org.apache.maven.plugins.shade.DefaultShader.shadeSingleJar
> (DefaultShader.java:240)
> at org.apache.maven.plugins.shade.DefaultShader.shadeJars
> (DefaultShader.java:196)
> at org.apache.maven.plugins.shade.DefaultShader.shade
> (DefaultShader.java:106)
> at org.apache.maven.plugins.shade.mojo.ShadeMojo.execute
> (ShadeMojo.java:442)
> at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo
> (DefaultBuildPluginManager.java:137)
> {noformat}
> Notes:
> * I tried to make the example as minimal as possible
> * The relocation patterns don't see to matter. The issue is in the relocator
> code opening a JAR dependency I guess
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