resourcehogs/serviceability/sa/ClhsdbRegionDetailsScanOopsForG1.java is failing in the loom repo, even when not being run using the vthread wrapper.

    java.lang.RuntimeException: Test ERROR java.lang.RuntimeException: 'Survivor' missing from stdout/stderr

The test runs the g1regiondetails clhsdb command, which dumps out all of the g1 regions. There's a very large number of "free" regions, 1 "Eden" region, and a couple of "Old" regions, but no "Survivor" region, which is what the test is looking for.

At first I though it may have been missed in the truncated part of the output, since the test exceeds jteg's max output, but I ran with an increased max output so there would be no truncation, and there is still no sign of a Survivor region in the output.

This failure does not happen when no JVM args are specified, but does with the following:

 -Xcomp -XX:+CreateCoredumpOnCrash -ea -esa -XX:CompileThreshold=100 -XX:+UnlockExperimentalVMOptions -server -XX:+TieredCompilation

I suspect -Xcomp is what matters here, but have not verified that yet.