NewAsyncAppender$Worker illegally accessing "protected" member

[lars-sh]

I like the idea of NewAsyncAppender within reload4j 1.2.26.
While it works on my local Windows machine it fails on z/OS with the following exception:

Exception in thread "NewAsyncSingleAppender-Worker-null" java.lang.IllegalAccessError: Class org/apache/log4j/NewAsyncAppender$Worker illegally accessing "protected" member of class org/apache/log4j/AppenderSkeleton
at org.apache.log4j.NewAsyncAppender$Worker.run(NewAsyncAppender.java:292)

It seems, the IBM JVM does not like accessing the protected field parent.closed from the inner Worker class.
Would you be willing to restructure the code a little to workaround that problem?
In case it simplifies things for you I could raise a pull request as an alternative.

Btw. the worker's thread name is based on the appender name. That might be expected behavior, that's different from AsyncAppender - just for your information.

Thanks for your efforts regardless of this issue and have a happy new year 🎆

Java Runtime on z/OS

Java(TM) SE Runtime Environment (build 8.0.8.25 - pmz6480sr8fp25-20240328_01(SR8 FP25))
IBM J9 VM (build 2.9, JRE 1.8.0 z/OS s390x-64-Bit Compressed References 20240305_66992 (JIT enabled, AOT enabled)
OpenJ9   - e3126d7
OMR      - f2f50a8
IBM      - b81b1e2)