[nbauma109]

The experimental 28-ea job of the Java CI matrix fails in BCELifierTest.testJavapCompare and BCELifierTest.testStackMap (10 failures), for instance this run.

Cause

The JaCoCo agent cannot instrument the class files of Java 28:

java.io.IOException: Error while instrumenting com/sun/tools/attach/VirtualMachine with JaCoCo 0.8.15.202606040825/6c5260a.
Caused by: java.lang.IllegalArgumentException: Unsupported class file major version 72

The tests that run javap or load JDK classes in a child JVM with the agent print this exception, and compare it with the expected output.

Change

The 28-ea matrix entry passes -Djacoco.skip=true, through a maven-args matrix variable that the other entries leave undefined (empty). The coverage is still measured by the other jobs.

Verification

mvn clean test -Djacoco.skip=true on Java 17: 3153 tests, 0 failures. The 28-ea job is the only one affected; its result will show on this pull request.

🤖 Generated with Claude Code

[nbauma109]

@garydgregory The 28-ea job of the Java CI matrix has been failing on master since JaCoCo 0.8.15 cannot instrument Java 28 class files (Unsupported class file major version 72); the failures are the 10 cases of BCELifierTest.testJavapCompare and testStackMap, whose child JVM prints that exception.

This pull request skips JaCoCo for that matrix entry only. On my fork the same change makes all 22 checks pass, including 28-ea: nbauma109#104

Pull request #539 does not touch the workflow: its 28-ea job fails for the same reason, and passes once this change is merged and #539 is rebased onto master.

[garydgregory]

Closing: it's ok for it to fail, that's why it's marked as experimental; it also serves as a canary for issues we can report.