Catch exceptions thrown when enqueuing change records.

src/runtime/runtime-object.cc

 // Copyright 2014 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/v8.h"
 
 #include "src/arguments.h"
 #include "src/bootstrapper.h"
 #include "src/debug.h"
 #include "src/runtime/runtime.h"
@@ skipping 344 matching lines @@
   if (obj->map()->is_observed()) {
     Handle<Object> old_value =
         Object::GetPrototypeSkipHiddenPrototypes(isolate, obj);
     Handle<Object> result;
     ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
         isolate, result, JSObject::SetPrototype(obj, prototype, true));
 
     Handle<Object> new_value =
         Object::GetPrototypeSkipHiddenPrototypes(isolate, obj);
     if (!new_value->SameValue(*old_value)) {
-      JSObject::EnqueueChangeRecord(
-          obj, "setPrototype", isolate->factory()->proto_string(), old_value);
+      RETURN_FAILURE_ON_EXCEPTION(
+          isolate, JSObject::EnqueueChangeRecord(
+                       obj, "setPrototype", isolate->factory()->proto_string(),
+                       old_value));
     }
     return *result;
   }
   Handle<Object> result;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
       isolate, result, JSObject::SetPrototype(obj, prototype, true));
   return *result;
 }
 
 
@@ skipping 1256 matching lines @@
 
 RUNTIME_FUNCTION(RuntimeReference_ClassOf) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_CHECKED(Object, obj, 0);
   if (!obj->IsJSReceiver()) return isolate->heap()->null_value();
   return JSReceiver::cast(obj)->class_name();
 }
 }
 }  // namespace v8::internal