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Karl Heinz Marbaise commented on MSHADE-337: -------------------------------------------- We need to check if there is an updated version of asm package. Based on the web site there is a newer version available (7.2) https://asm.ow2.io/versions.html so you can as a first step overwrite the version via dependency in your plugin configuration like this: Current master already contains an updated version. {code:xml} <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-shade-plugin</artifactId> <dependencies> <dependency> <groupId>org.ow2.asm</groupId> <artifactId>asm</artifactId> <version>7.2</version> </dependency> <dependency> <groupId>org.ow2.asm</groupId> <artifactId>asm-commons</artifactId> <version>7.2</version> </dependency> </dependencies> </plugin> </plugins> {code} This should help until the new release of maven-shade-plugin has been done. > 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 > Priority: Major > 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 -- This message was sent by Atlassian Jira (v8.3.4#803005)