| Index: dart/runtime/vm/debugger.cc | 
| =================================================================== | 
| --- dart/runtime/vm/debugger.cc	(revision 29808) | 
| +++ dart/runtime/vm/debugger.cc	(working copy) | 
| @@ -1484,6 +1484,11 @@ | 
|  | 
| void Debugger::OneTimeBreakAtEntry(const Function& target_function) { | 
| InstrumentForStepping(target_function); | 
| +  if (target_function.HasImplicitClosureFunction()) { | 
| +    const Function& closure_func = | 
| +        Function::Handle(target_function.ImplicitClosureFunction()); | 
| +    InstrumentForStepping(closure_func); | 
| +  } | 
| } | 
|  | 
|  | 
|  |