diff -r 7491c8b96111 -r c77b5c592eab src/share/vm/runtime/globals.hpp
--- a/src/share/vm/runtime/globals.hpp	Thu Oct 07 15:14:41 2010 -0400
+++ b/src/share/vm/runtime/globals.hpp	Tue Oct 12 10:57:33 2010 -0400
@@ -815,6 +815,9 @@
   develop(bool, PrintJVMWarnings, false,                                    \
           "Prints warnings for unimplemented JVM functions")                \
                                                                             \
+  product(bool, PrintWarnings, true,                                        \
+          "Prints JVM warnings to output stream")                           \
+                                                                            \
   notproduct(uintx, WarnOnStalledSpinLock, 0,                               \
           "Prints warnings for stalled SpinLocks")                          \
                                                                             \