--- a/hotspot/src/share/vm/runtime/thread.cpp	Wed Dec 05 09:01:00 2007 -0800
+++ b/hotspot/src/share/vm/runtime/thread.cpp	Wed Dec 05 09:02:00 2007 -0800
@@ -2925,6 +2925,25 @@
       warning("java.lang.String not initialized");
     }
 
+    if (AggressiveOpts) {
+      // Forcibly initialize java/util/HashMap and mutate the private
+      // static final "frontCacheEnabled" field before we start creating instances
+#ifdef ASSERT
+      klassOop tmp_k = SystemDictionary::find(vmSymbolHandles::java_util_HashMap(), Handle(), Handle(), CHECK_0);
+      assert(tmp_k == NULL, "java/util/HashMap should not be loaded yet");
+#endif
+      klassOop k_o = SystemDictionary::resolve_or_null(vmSymbolHandles::java_util_HashMap(), Handle(), Handle(), CHECK_0);
+      KlassHandle k = KlassHandle(THREAD, k_o);
+      guarantee(k.not_null(), "Must find java/util/HashMap");
+      instanceKlassHandle ik = instanceKlassHandle(THREAD, k());
+      ik->initialize(CHECK_0);
+      fieldDescriptor fd;
+      // Possible we might not find this field; if so, don't break
+      if (ik->find_local_field(vmSymbols::frontCacheEnabled_name(), vmSymbols::bool_signature(), &fd)) {
+        k()->bool_field_put(fd.offset(), true);
+      }
+    }
+
     // Initialize java_lang.System (needed before creating the thread)
     if (InitializeJavaLangSystem) {
       initialize_class(vmSymbolHandles::java_lang_System(), CHECK_0);