| Index: src/frames.cc | 
| diff --git a/src/frames.cc b/src/frames.cc | 
| index 5f51dec2882cab9c473032d47c15bfce5d711105..ebe0cb121c34d0eec9a2f11272bdb9ddef53bf3d 100644 | 
| --- a/src/frames.cc | 
| +++ b/src/frames.cc | 
| @@ -1446,6 +1446,9 @@ | 
| // after the inner pointer. | 
| Page* page = Page::FromAddress(inner_pointer); | 
|  | 
| +  DCHECK_EQ(page->owner(), heap->code_space()); | 
| +  heap->mark_compact_collector()->SweepOrWaitUntilSweepingCompleted(page); | 
| + | 
| Address addr = page->skip_list()->StartFor(inner_pointer); | 
|  | 
| Address top = heap->code_space()->top(); | 
|  |