--- old/src/share/vm/runtime/globals.hpp	2013-08-28 16:01:38.000000000 +0400
+++ new/src/share/vm/runtime/globals.hpp	2013-08-28 16:01:38.000000000 +0400
@@ -3639,6 +3639,12 @@
   experimental(bool, FoldStableValues, true,                                \
           "Private flag to control optimizations for stable variables")     \
                                                                             \
+  develop(bool, VerifyStable, true,                                         \
+          "Verify stable property (0/NULL => non_0/non_NULL)")              \
+                                                                            \
+  develop(bool, TraceStableFieldUpdates, true,                              \
+          "Trace updates to stable fields")                                 \
+                                                                            \
   develop(bool, TraceInvokeDynamic, false,                                  \
           "trace internal invoke dynamic operations")                       \
                                                                             \