Version 3.6.5

src/ic.cc

Index: src/ic.cc
===================================================================
--- src/ic.cc	(revision 9531)
+++ src/ic.cc	(working copy)
@@ -1351,7 +1351,7 @@
 }
 
 
-static bool LookupForWrite(JSReceiver* receiver,
+static bool LookupForWrite(JSObject* receiver,
                            String* name,
                            LookupResult* lookup) {
   receiver->LocalLookup(name, lookup);
@@ -1359,12 +1359,10 @@
     return false;
   }
 
-  if (lookup->type() == INTERCEPTOR) {
-    JSObject* object = JSObject::cast(receiver);
-    if (object->GetNamedInterceptor()->setter()->IsUndefined()) {
-      object->LocalLookupRealNamedProperty(name, lookup);
-      return StoreICableLookup(lookup);
-    }
+  if (lookup->type() == INTERCEPTOR &&
+      receiver->GetNamedInterceptor()->setter()->IsUndefined()) {
+    receiver->LocalLookupRealNamedProperty(name, lookup);
+    return StoreICableLookup(lookup);
   }
 
   return true;
@@ -1376,28 +1374,28 @@
                             Handle<Object> object,
                             Handle<String> name,
                             Handle<Object> value) {
-  // If the object is undefined or null it's illegal to try to set any
-  // properties on it; throw a TypeError in that case.
-  if (object->IsUndefined() || object->IsNull()) {
-    return TypeError("non_object_property_store", object, name);
-  }
+  if (!object->IsJSObject()) {
+    // Handle proxies.
+    if (object->IsJSProxy()) {
+      return JSProxy::cast(*object)->
+          SetProperty(*name, *value, NONE, strict_mode);
+    }
 
-  if (!object->IsJSReceiver()) {
+    // If the object is undefined or null it's illegal to try to set any
+    // properties on it; throw a TypeError in that case.
+    if (object->IsUndefined() || object->IsNull()) {
+      return TypeError("non_object_property_store", object, name);
+    }
+
     // The length property of string values is read-only. Throw in strict mode.
     if (strict_mode == kStrictMode && object->IsString() &&
         name->Equals(isolate()->heap()->length_symbol())) {
       return TypeError("strict_read_only_property", object, name);
     }
-    // Ignore stores where the receiver is not a JSObject.
+    // Ignore other stores where the receiver is not a JSObject.
     return *value;
   }
 
-  // Handle proxies.
-  if (object->IsJSProxy()) {
-    return JSReceiver::cast(*object)->
-        SetProperty(*name, *value, NONE, strict_mode);
-  }
-
   Handle<JSObject> receiver = Handle<JSObject>::cast(object);
 
   // Check if the given name is an array index.
@@ -1675,6 +1673,7 @@
   } else {
     ASSERT(receiver_map->has_dictionary_elements() ||
            receiver_map->has_fast_elements() ||
+           receiver_map->has_fast_smi_only_elements() ||
            receiver_map->has_fast_double_elements() ||
            receiver_map->has_external_array_elements());
     bool is_js_array = receiver_map->instance_type() == JS_ARRAY_TYPE;
@@ -1690,6 +1689,7 @@
                                              Code* generic_stub) {
   Code* result = NULL;
   if (receiver->HasFastElements() ||
+      receiver->HasFastSmiOnlyElements() ||
       receiver->HasExternalArrayElements() ||
       receiver->HasFastDoubleElements() ||
       receiver->HasDictionaryElements()) {