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src/share/vm/gc/cms/concurrentMarkSweepGeneration.cpp

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@@ -2285,21 +2285,20 @@
   if (CMSRemarkVerifyVariant == 1) {
     // In this first variant of verification, we complete
     // all marking, then check if the new marks-vector is
     // a subset of the CMS marks-vector.
     verify_after_remark_work_1();
-  } else if (CMSRemarkVerifyVariant == 2) {
+  } else {
+    guarantee(CMSRemarkVerifyVariant == 2, "Range checking for CMSRemarkVerifyVariant should guarantee 1 or 2");
     // In this second variant of verification, we flag an error
     // (i.e. an object reachable in the new marks-vector not reachable
     // in the CMS marks-vector) immediately, also indicating the
     // identify of an object (A) that references the unmarked object (B) --
     // presumably, a mutation to A failed to be picked up by preclean/remark?
     verify_after_remark_work_2();
-  } else {
-    warning("Unrecognized value " UINTX_FORMAT " for CMSRemarkVerifyVariant",
-            CMSRemarkVerifyVariant);
   }
+
   return true;
 }
 
 void CMSCollector::verify_after_remark_work_1() {
   ResourceMark rm;
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