| Index: src/isolate.cc | 
| diff --git a/src/isolate.cc b/src/isolate.cc | 
| index 7700ca5f7380cd5954a15774334778406da8c88d..a49eee6e86a6a09de2541e39d555605694a06002 100644 | 
| --- a/src/isolate.cc | 
| +++ b/src/isolate.cc | 
| @@ -1051,8 +1051,10 @@ void Isolate::ComputeLocationFromStackTrace(MessageLocation* target, | 
| Handle<Object> exception) { | 
| *target = MessageLocation(Handle<Script>(heap_.empty_script()), -1, -1); | 
|  | 
| +  if (!exception->IsJSObject()) return; | 
| Handle<Name> key = factory()->stack_trace_symbol(); | 
| -  Handle<Object> property = JSObject::GetDataProperty(exception, key); | 
| +  Handle<Object> property = | 
| +      JSObject::GetDataProperty(Handle<JSObject>::cast(exception), key); | 
| if (!property->IsJSArray()) return; | 
| Handle<JSArray> simple_stack_trace = Handle<JSArray>::cast(property); | 
|  | 
|  |