test/hotspot/jtreg/runtime/appcds/sharedStrings/IncompatibleOptions_stringDedup.java

@@ -25,10 +25,13 @@
 /*
  * @test
  * @summary Test options that are incompatible with use of shared strings
  *          Also test mismatch in oops encoding between dump time and run time
  * @requires vm.cds.archived.java.heap
+ * @comment This test explicitly chooses the type of GC to be used by sub-processes. It may conflict with the GC type set
+ * via the -vmoptions command line option of JTREG. vm.gc==null will help the test case to discard the explicitly passed
+ * vm options.
  * @requires (vm.gc=="null")
  * @library /test/lib /test/hotspot/jtreg/runtime/appcds
  * @modules jdk.jartool/sun.tools.jar
  * @build sun.hotspot.WhiteBox
  * @run driver ClassFileInstaller sun.hotspot.WhiteBox sun.hotspot.WhiteBox$WhiteBoxPermission