Function::GetScriptOrigin should supply sourceURL when script name is not available.

src/handles.cc

 // Copyright 2012 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 575 matching lines @@
       result = enum_fun(info);
 #if ENABLE_EXTRA_CHECKS
       CHECK(result.IsEmpty() || v8::Utils::OpenHandle(*result)->IsJSObject());
 #endif
     }
   }
   return result;
 }
 
 
+Handle<Object> GetScriptNameOrSourceURL(Handle<Script> script) {
+  Isolate* isolate = script->GetIsolate();
+  Handle<String> name_or_source_url_key =
+      isolate->factory()->LookupAsciiSymbol("nameOrSourceURL");
+  Handle<JSValue> script_wrapper = GetScriptWrapper(script);
+  Handle<Object> property = GetProperty(script_wrapper,
+                                        name_or_source_url_key);
+  ASSERT(property->IsJSFunction());
+  Handle<JSFunction> method = Handle<JSFunction>::cast(property);
+  bool caught_exception;
+  Handle<Object> result = Execution::TryCall(method, script_wrapper, 0,
+                                             NULL, &caught_exception);
+  if (caught_exception) {
+    result = isolate->factory()->undefined_value();
+  }
+  return result;
+}
+
+
 static bool ContainsOnlyValidKeys(Handle<FixedArray> array) {
   int len = array->length();
   for (int i = 0; i < len; i++) {
     Object* e = array->get(i);
     if (!(e->IsString() || e->IsNumber())) return false;
   }
   return true;
 }
 
 
@@ skipping 452 matching lines @@
   data->next = prev_next_;
   data->limit = prev_limit_;
 #ifdef DEBUG
   handles_detached_ = true;
 #endif
   return deferred;
 }
 
 
 } }  // namespace v8::internal