Implement KeyedStoreICs to grow arrays on out-of-bound stores.

src/objects-debug.cc

Index: src/objects-debug.cc
diff --git a/src/objects-debug.cc b/src/objects-debug.cc
index 3a667a4398f03f0d8f8fc132c9f1c5c00ecf11cc..628c61f4c7d0f402742921bd63fbc1e653b3adab 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -1,4 +1,4 @@
-// Copyright 2011 the V8 project authors. All rights reserved.
+// Copyright 2012 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:
@@ -280,7 +280,9 @@ void JSObject::JSObjectVerify() {
              (map()->inobject_properties() + properties()->length() -
               map()->NextFreePropertyIndex()));
   }
-  ASSERT_EQ((map()->has_fast_elements() || map()->has_fast_smi_only_elements()),
+  ASSERT_EQ((map()->has_fast_elements() ||
+             map()->has_fast_smi_only_elements() ||
+             (elements() == GetHeap()->empty_fixed_array())),
             (elements()->map() == GetHeap()->fixed_array_map() ||
              elements()->map() == GetHeap()->fixed_cow_array_map()));
   ASSERT(map()->has_fast_elements() == HasFastElements());