| Index: runtime/vm/parser.cc
 | 
| diff --git a/runtime/vm/parser.cc b/runtime/vm/parser.cc
 | 
| index 116388b328332fb66d9d187994f3784c8c78da03..419cd4e151de9abb07b46e48f1f77701f1ae317e 100644
 | 
| --- a/runtime/vm/parser.cc
 | 
| +++ b/runtime/vm/parser.cc
 | 
| @@ -12884,6 +12884,7 @@ RawFunction* Parser::BuildConstructorClosureFunction(const Function& ctr,
 | 
|                                           token_pos);
 | 
|    closure.set_is_generated_body(true);
 | 
|    closure.set_is_debuggable(false);
 | 
| +  closure.set_is_visible(false);
 | 
|    closure.set_result_type(AbstractType::Handle(Type::DynamicType()));
 | 
|    AddFormalParamsToFunction(¶ms, closure);
 | 
|  
 | 
| 
 |