--- old/test/hotspot/jtreg/runtime/appcds/sharedStrings/IncompatibleOptions.java	2018-06-27 09:09:21.812036786 +0200
+++ new/test/hotspot/jtreg/runtime/appcds/sharedStrings/IncompatibleOptions.java	2018-06-27 09:09:21.539024951 +0200
@@ -62,6 +62,7 @@
 
         // Uncompressed OOPs
         testDump(1, "-XX:+UseG1GC", "-XX:-UseCompressedOops", COOPS_DUMP_WARNING, true);
+        testDump(1, "-XX:+UnlockExperimentalVMOptions", "-XX:+UseZGC", COOPS_DUMP_WARNING, true);
 
         // incompatible GCs
         testDump(2, "-XX:+UseParallelGC", "", GC_WARNING, false);