In Oracle hs-tier4, we have a task that runs test/hotspot/jtreg/serviceability/sa/ClhsdbInspect.java with the following VM parameters:

-XX:+UnlockDiagnosticVMOptions -XX:ArchiveRelocationMode=1 -Xlog:cds -XX:NativeMemoryTracking=detail

I have made some local modifications that prints out an log message like this:

[0.097s][info][cds] patching heap embedded pointers for ca0: 0xf7fe0000 -> 0xfffe0000

This message is matched by the following pattern:

https://github.com/openjdk/jdk/blob/09629570f5d064dc2a5cd670de8d648156ac3991/test/hotspot/jtreg/serviceability/sa/ClhsdbInspect.java#L161-L164

            String examineCmdOutput = test.run(theApp.getPid(), cmds, expStrMap, null);
            String examineResult = examineCmdOutput.substring(examineCmdOutput.indexOf(": 0x")+2);

As a result, the test fails with:

java.lang.RuntimeException: Test ERROR java.lang.RuntimeException: '0xf7fe0000 -> 0xfffe0000: 0x' missing from stdout/stderr
at ClhsdbInspect.main(ClhsdbInspect.java:194)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:578)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:125)
at java.base/java.lang.Thread.run(Thread.java:1591)
Caused by: java.lang.RuntimeException: '0xf7fe0000 -> 0xfffe0000: 0x' missing from stdout/stderr
at jdk.test.lib.process.OutputAnalyzer.shouldMatch(OutputAnalyzer.java:340)
at ClhsdbLauncher.runCmd(ClhsdbLauncher.java:166)
at ClhsdbLauncher.run(ClhsdbLauncher.java:203)
at ClhsdbInspect.main(ClhsdbInspect.java:171)
... 4 more