--- a/hotspot/src/share/vm/memory/guardedMemory.cpp	Mon Jan 18 19:10:32 2016 +0100
+++ b/hotspot/src/share/vm/memory/guardedMemory.cpp	Tue Jan 19 11:00:29 2016 +0100
@@ -157,5 +157,9 @@
   assert(GuardedMemory::free_copy(no_data_copy), "Expected valid guards even for no data copy");
 }
 
+void GuardedMemory_test() {
+  GuardedMemory::test_guarded_memory();
+}
+
 #endif // !PRODUCT