[MSHADE-461] multi-release jars with java 22 classes cause class version issues

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.5.2
• Assignee: Unassigned
• Reporter: PJ Fanning
• Created: 13/Dec/23 21:03
• Updated: 30/Mar/24 23:21
• Resolved: 30/Mar/24 23:21

Description

See https://github.com/FasterXML/jackson-core/commit/d28275d31f82e8d65e83e5509956789fb4207327

fastdoubleparser 1.0.0 includes a META-INF/versions/22 directory

maven-shade-plugin does not support class version 66 (relates to classes built with JDK 22)

I know Java 22 is still in early access mode but this still allows lib maintainers to include java 22 classes in their multi-release jars.

Would it be possible to ignore the class version or code defensively so that maven-shade-plugin can workaround it when class version is a little ahead?

To reproduce the issue, try to build https://github.com/FasterXML/jackson-core (2.17 branch, the default) but remove this line from the pom.xml:

<exclude>META-INF/versions/22/*/.*</exclude>

Issue Links

• is fixed by: MSHADE-463 Bump asmVersion from 9.5 to 9.6
• is fixed by: MSHADE-470 Upgrade ASM to 9.7 (Java 23)