Tag all prototypes as proto, except those set using __proto__

src/api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 3186 matching lines @@
 bool v8::Object::SetPrototype(Handle<Value> value) {
   i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
   ON_BAILOUT(isolate, "v8::Object::SetPrototype()", return false);
   ENTER_V8(isolate);
   i::Handle<i::JSObject> self = Utils::OpenHandle(this);
   i::Handle<i::Object> value_obj = Utils::OpenHandle(*value);
   // We do not allow exceptions thrown while setting the prototype
   // to propagate outside.
   TryCatch try_catch;
   EXCEPTION_PREAMBLE(isolate);
-  i::MaybeHandle<i::Object> result = i::JSObject::SetPrototype(
-      self, value_obj);
+  i::MaybeHandle<i::Object> result =
+      i::JSObject::SetPrototype(self, value_obj, false);
   has_pending_exception = result.is_null();
   EXCEPTION_BAILOUT_CHECK(isolate, false);
   return true;
 }
 
 
 Local<Object> v8::Object::FindInstanceInPrototypeChain(
     v8::Handle<FunctionTemplate> tmpl) {
   i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
   ON_BAILOUT(isolate,
@@ skipping 4415 matching lines @@
   Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 } }  // namespace v8::internal