https://www.ibm.com/support/pages/apar/IV70976
IV70976: SPURIOUS WARNINGS ABOUT IDENTIFIERS FROM -XCHECK:JNI
Error Message: -Xcheck:jni marks valid identifiers as invalid:JVMJNCK059W JNI warning in SomeMethod: Argument #2 is a
spuriouswarningsidentifiersxcheckjni
https://www.ibm.com/support/pages/apar/IV88882
IV88882: ASSERTION FROM ROMCLASSBUILDER WHEN USING OPTION XCHECK:VM:DEBUG INFO
assertion
https://www.ibm.com/docs/en/semeru-runtime-ce-z/21.0.0?topic=options-xcheck
-Xcheck
xcheck