Make the GC aware of JSReceiver pointers in LookupResults.

src/ic.cc

 // 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:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 465 matching lines @@
     if (result->IsJSFunction()) return result;
 
     // Try to find a suitable function delegate for the object at hand.
     result = TryCallAsFunction(result);
     if (result->IsJSFunction()) return result;
 
     // Otherwise, it will fail in the lookup step.
   }
 
   // Lookup the property in the object.
-  LookupResult lookup;
+  LookupResult lookup(isolate());
   LookupForRead(*object, *name, &lookup);
 
   if (!lookup.IsProperty()) {
     // If the object does not have the requested property, check which
     // exception we need to throw.
     if (IsContextual(object)) {
       return ReferenceError("not_defined", name);
     }
     return TypeError("undefined_method", object, name);
   }
@@ skipping 431 matching lines @@
       return Accessors::FunctionGetPrototype(*object, 0);
     }
   }
 
   // Check if the name is trivially convertible to an index and get
   // the element if so.
   uint32_t index;
   if (name->AsArrayIndex(&index)) return object->GetElement(index);
 
   // Named lookup in the object.
-  LookupResult lookup;
+  LookupResult lookup(isolate());
   LookupForRead(*object, *name, &lookup);
 
   // If we did not find a property, check if we need to throw an exception.
   if (!lookup.IsProperty()) {
     if (IsContextual(object)) {
       return ReferenceError("not_defined", name);
     }
     LOG(isolate(), SuspectReadEvent(*name, *object));
   }
 
@@ skipping 247 matching lines @@
     // the element or char if so.
     uint32_t index = 0;
     if (name->AsArrayIndex(&index)) {
       HandleScope scope(isolate());
       // Rewrite to the generic keyed load stub.
       if (FLAG_use_ic) set_target(generic_stub());
       return Runtime::GetElementOrCharAt(isolate(), object, index);
     }
 
     // Named lookup.
-    LookupResult lookup;
+    LookupResult lookup(isolate());
     LookupForRead(*object, *name, &lookup);
 
     // If we did not find a property, check if we need to throw an exception.
     if (!lookup.IsProperty() && IsContextual(object)) {
       return ReferenceError("not_defined", name);
     }
 
     if (FLAG_use_ic) {
       UpdateCaches(&lookup, state, object, name);
     }
@@ skipping 211 matching lines @@
 #endif
     Builtins::Name target = (strict_mode == kStrictMode)
         ? Builtins::kStoreIC_ArrayLength_Strict
         : Builtins::kStoreIC_ArrayLength;
     set_target(isolate()->builtins()->builtin(target));
     return receiver->SetProperty(*name, *value, NONE, strict_mode);
   }
 
   // Lookup the property locally in the receiver.
   if (FLAG_use_ic && !receiver->IsJSGlobalProxy()) {
-    LookupResult lookup;
+    LookupResult lookup(isolate());
 
     if (LookupForWrite(*receiver, *name, &lookup)) {
       // Generate a stub for this store.
       UpdateCaches(&lookup, state, strict_mode, receiver, name, value);
     } else {
       // Strict mode doesn't allow setting non-existent global property
       // or an assignment to a read only property.
       if (strict_mode == kStrictMode) {
         if (lookup.IsFound() && lookup.IsReadOnly()) {
           return TypeError("strict_read_only_property", object, name);
@@ skipping 393 matching lines @@
     // Check if the given name is an array index.
     uint32_t index;
     if (name->AsArrayIndex(&index)) {
       HandleScope scope(isolate());
       Handle<Object> result = SetElement(receiver, index, value, strict_mode);
       if (result.is_null()) return Failure::Exception();
       return *value;
     }
 
     // Lookup the property locally in the receiver.
-    LookupResult lookup;
+    LookupResult lookup(isolate());
     receiver->LocalLookup(*name, &lookup);
 
     // Update inline cache and stub cache.
     if (FLAG_use_ic) {
       UpdateCaches(&lookup, state, strict_mode, receiver, name, value);
     }
 
     // Set the property.
     return receiver->SetProperty(*name, *value, NONE, strict_mode);
   }
@@ skipping 749 matching lines @@
 #undef ADDR
 };
 
 
 Address IC::AddressFromUtilityId(IC::UtilityId id) {
   return IC_utilities[id];
 }
 
 
 } }  // namespace v8::internal