| Index: src/heap.h | 
| diff --git a/src/heap.h b/src/heap.h | 
| index 4f9b672bf9d24d3e2649c35f4f3e4fa8490336f4..3ee1135c056e6282dd412790da8bb2ecca084f4a 100644 | 
| --- a/src/heap.h | 
| +++ b/src/heap.h | 
| @@ -224,6 +224,9 @@ namespace internal { | 
| V(illegal_execution_state_symbol, "illegal execution state")           \ | 
| V(get_symbol, "get")                                                   \ | 
| V(set_symbol, "set")                                                   \ | 
| +  V(map_field_symbol, "%map")                                            \ | 
| +  V(elements_field_symbol, "%elements")                                  \ | 
| +  V(length_field_symbol, "%length")                                      \ | 
| V(function_class_symbol, "Function")                                   \ | 
| V(illegal_argument_symbol, "illegal argument")                         \ | 
| V(MakeReferenceError_symbol, "MakeReferenceError")                     \ | 
|  |