[MSHADE-337] Relocation cannot process class file version 58 JARs

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.2.1
• Fix Version/s: 3.2.2
• Assignee: Karl Heinz Marbaise
• Reporter: Jordan Zimmerman
• Created: 15/Dec/19 15:36
• Updated: 23/Dec/20 09:01
• Resolved: 17/Dec/19 21:44

Description

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:

java.lang.IllegalArgumentException: Unsupported class file major version 58

Steps to Reproduce:

• Unzip the enclosed attachment
• Make sure Java 14 is installed and JAVA_HOME points at it
• Run mvn package

Stacktrace:

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)

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

Issue Links

• is related to: MSHADE-330 Java 12 and 13 support