The change JDK-8193513 enhanced the test runtime/logging/ClassLoadUnloadTest.java . Unfortunately the test started to fail after this on AIX :

----------System.err:(16/744)----------
 stdout: [];
 stderr: []
 exitValue = 0

java.lang.RuntimeException: '[class,load,cause]' missing from stdout/stderr
at jdk.test.lib.process.OutputAnalyzer.shouldContain(OutputAnalyzer.java:221)
at ClassLoadUnloadTest.checkFor(ClassLoadUnloadTest.java:64)
at ClassLoadUnloadTest.main(ClassLoadUnloadTest.java:128)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:333)
at java.base/java.lang.Thread.run(Thread.java:1570)