I have run into this as well and I believe this web page explains what is going on - https://docs.oracle.com/en/java/javase/17/migrate/migrating-jdk-8-later-jdk-releases.html#GUID-7BB28E4D-99B3-4078-BDC4-FC24180CE82B
It’s an Oracle Java web page but I believe it applies to all Java implementations and it has to do with Java versions beyond version 8. It is something that looks important to note as it affects all Java (and therefore Groovy as well) usage going forward. From: Tommy Svensson <to...@natusoft.se> Sent: Monday, June 24, 2024 12:26 PM To: o...@ocs.cz; users@groovy.apache.org Subject: Re: Interesting problem only on Mac! Thanks for the tip! I actually have no idea what I did, but suddenly I do get the same warnings on Linux also! Nice to have consistency :-) Tommy Svensson to...@natusoft.se <mailto:to...@natusoft.se> Från: o...@ocs.cz <mailto:o...@ocs.cz> <mailto:o...@ocs.cz> <o...@ocs.cz> Svara: users@groovy.apache.org <mailto:users@groovy.apache.org> <mailto:users@groovy.apache.org> <users@groovy.apache.org> Datum: 24 juni 2024 at 18:55:08 Till: users@groovy.apache.org <mailto:users@groovy.apache.org> <mailto:users@groovy.apache.org> <users@groovy.apache.org> Ämne: Re: Interesting problem only on Mac! Tommy, I guess you might get more detailed info if you add the JVM option “--illegal-access=debug”. (Groovy works for me on Mac pretty nicely for years :)) All the best, OC On 24. 6. 2024, at 14:50, Tommy Svensson <to...@natusoft.se <mailto:to...@natusoft.se> > wrote: Hmm .... It is the JDK that produces the message. ==> I believe It is the JDK that produces the message. Just to be clear :-) Tommy Svensson to...@natusoft.se <mailto:to...@natusoft.se> Från: Tommy Svensson <mailto:to...@natusoft.se> <to...@natusoft.se> Svara: Tommy Svensson <mailto:to...@natusoft.se> <to...@natusoft.se> Datum: 23 juni 2024 at 19:49:50 Till: users@groovy.apache.org <mailto:users@groovy.apache.org> <mailto:users@groovy.apache.org> <users@groovy.apache.org> Ämne: Interesting problem only on Mac! Hello Groovy users, I reported this error message here earlier, but I have new information that makes even less sense :-). WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by org.codehaus.groovy.vmplugin.v9.Java9 (file:/Users/tommy/.m2/repository/org/apache/groovy/groovy/4.0.21/groovy-4.0.21.jar) to field java.lang.reflect.Proxy.h WARNING: Please consider reporting this to the maintainers of org.codehaus.groovy.vmplugin.v9.Java9 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release I'm building with Liberica JDK, but I also tried same version of Coretto. Om my Mac both of these report the above message. But now it gets interesting when I build the same code with the same JDKs on a virtual Ubuntu Linux (Parallels) then I got no such warning message, only on Mac! It is the JDK that produces the message. Is the Groovy community trying to say "Don't use Mac!" :-) Tommy Svensson to...@natusoft.se <mailto:to...@natusoft.se>
