diff --git a/src/objects-debug.cc b/src/objects-debug.cc
index dd606dc..76c520e 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -1,4 +1,4 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
+// Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -116,6 +116,9 @@
     case EXTERNAL_FLOAT_ARRAY_TYPE:
       ExternalFloatArray::cast(this)->ExternalFloatArrayVerify();
       break;
+    case EXTERNAL_DOUBLE_ARRAY_TYPE:
+      ExternalDoubleArray::cast(this)->ExternalDoubleArrayVerify();
+      break;
     case CODE_TYPE:
       Code::cast(this)->CodeVerify();
       break;
@@ -152,8 +155,11 @@
       break;
     case FILLER_TYPE:
       break;
-    case PROXY_TYPE:
-      Proxy::cast(this)->ProxyVerify();
+    case JS_PROXY_TYPE:
+      JSProxy::cast(this)->JSProxyVerify();
+      break;
+    case FOREIGN_TYPE:
+      Foreign::cast(this)->ForeignVerify();
       break;
     case SHARED_FUNCTION_INFO_TYPE:
       SharedFunctionInfo::cast(this)->SharedFunctionInfoVerify();
@@ -232,6 +238,11 @@
 }
 
 
+void ExternalDoubleArray::ExternalDoubleArrayVerify() {
+  ASSERT(IsExternalDoubleArray());
+}
+
+
 void JSObject::JSObjectVerify() {
   VerifyHeapPointer(properties());
   VerifyHeapPointer(elements());
@@ -261,7 +272,7 @@
 void Map::SharedMapVerify() {
   MapVerify();
   ASSERT(is_shared());
-  ASSERT_EQ(GetHeap()->empty_descriptor_array(), instance_descriptors());
+  ASSERT(instance_descriptors()->IsEmpty());
   ASSERT_EQ(0, pre_allocated_property_fields());
   ASSERT_EQ(0, unused_property_fields());
   ASSERT_EQ(StaticVisitorBase::GetVisitorId(instance_type(), instance_size()),
@@ -433,14 +444,22 @@
 
       FixedArray* arr = FixedArray::cast(data());
       Object* ascii_data = arr->get(JSRegExp::kIrregexpASCIICodeIndex);
-      // TheHole : Not compiled yet.
+      // Smi : Not compiled yet (-1) or code prepared for flushing.
       // JSObject: Compilation error.
       // Code/ByteArray: Compiled code.
-      ASSERT(ascii_data->IsTheHole() || ascii_data->IsJSObject() ||
-          (is_native ? ascii_data->IsCode() : ascii_data->IsByteArray()));
+      ASSERT(ascii_data->IsSmi() ||
+             (is_native ? ascii_data->IsCode() : ascii_data->IsByteArray()));
       Object* uc16_data = arr->get(JSRegExp::kIrregexpUC16CodeIndex);
-      ASSERT(uc16_data->IsTheHole() || uc16_data->IsJSObject() ||
-          (is_native ? uc16_data->IsCode() : uc16_data->IsByteArray()));
+      ASSERT(uc16_data->IsSmi() ||
+             (is_native ? uc16_data->IsCode() : uc16_data->IsByteArray()));
+
+      Object* ascii_saved = arr->get(JSRegExp::kIrregexpASCIICodeSavedIndex);
+      ASSERT(ascii_saved->IsSmi() || ascii_saved->IsString() ||
+             ascii_saved->IsCode());
+      Object* uc16_saved = arr->get(JSRegExp::kIrregexpUC16CodeSavedIndex);
+      ASSERT(uc16_saved->IsSmi() || uc16_saved->IsString() ||
+             uc16_saved->IsCode());
+
       ASSERT(arr->get(JSRegExp::kIrregexpCaptureCountIndex)->IsSmi());
       ASSERT(arr->get(JSRegExp::kIrregexpMaxRegisterCountIndex)->IsSmi());
       break;
@@ -453,8 +472,13 @@
 }
 
 
-void Proxy::ProxyVerify() {
-  ASSERT(IsProxy());
+void JSProxy::JSProxyVerify() {
+  ASSERT(IsJSProxy());
+  VerifyPointer(handler());
+}
+
+void Foreign::ForeignVerify() {
+  ASSERT(IsForeign());
 }