Chromium Code Reviews| Index: runtime/vm/dart.cc | 
| =================================================================== | 
| --- runtime/vm/dart.cc (revision 32487) | 
| +++ runtime/vm/dart.cc (working copy) | 
| @@ -132,6 +132,7 @@ | 
| } | 
| #endif | 
| PremarkingVisitor premarker(vm_isolate_); | 
| + vm_isolate_->heap()->WriteProtect(false); | 
| vm_isolate_->heap()->IterateOldObjects(&premarker); | 
| vm_isolate_->heap()->WriteProtect(true); | 
| } |