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Posted to dev@logging.apache.org by "William Ferguson (JIRA)" <ji...@apache.org> on 2017/09/11 07:19:02 UTC

[jira] [Created] (LOG4J2-2041) 2.9.0 contains classes built to class version 53

William Ferguson created LOG4J2-2041:
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             Summary: 2.9.0 contains classes built to class version 53
                 Key: LOG4J2-2041
                 URL: https://issues.apache.org/jira/browse/LOG4J2-2041
             Project: Log4j 2
          Issue Type: Bug
    Affects Versions: 2.9.0
            Reporter: William Ferguson


2.9.0 is built to class version 53, presumably because it includes attempts at support for JDK9.

But JDK has not been released yet, so build tools that introspect class files (such as Proguard) do not yet support consuming version 53 classes.

Can I suggest that an appropriate forward path is to build using and against JDK9 but to build to class version 52 until some time after JDK9 has been released so as to not break existing tooling.



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