test/hotspot/jtreg/runtime/CompressedOops/CompressedCPUSpecificClassSpaceReservation.java

@@ -53,10 +53,11 @@
          // [0.017s][debug][os,map] reserve_between (range [0x0000000000000000-0x0000000100000000), size 0x41000000, alignment 0x1000000, randomize: 1)
          ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
                  "-Xshare:" + (CDS ? "on" : "off"),
                  "-Xmx128m",
                  "-XX:CompressedClassSpaceSize=128m",
+                 "-XX:+UnlockExperimentalVMOptions", "-XX:-UseCompactObjectHeaders",
                  "-Xlog:metaspace*", "-Xlog:metaspace+map=trace", "-Xlog:os+map=trace",
                  "-XX:+SimulateFullAddressSpace", // So that no resevation attempt will succeed
                  "-version");
          OutputAnalyzer output = new OutputAnalyzer(pb.start());