| Index: lib/compiler/implementation/lib/core.dart | 
| diff --git a/lib/compiler/implementation/lib/core.dart b/lib/compiler/implementation/lib/core.dart | 
| index a17e94abc7ec2783c6cd30d8a7fbf6e213741bcb..4336940ed549a3b378b204cfa035dd305b63f9df 100644 | 
| --- a/lib/compiler/implementation/lib/core.dart | 
| +++ b/lib/compiler/implementation/lib/core.dart | 
| @@ -15,6 +15,7 @@ | 
| #source('../../../../corelib/src/double.dart'); | 
| #source('../../../../corelib/src/duration.dart'); | 
| #source('../../../../corelib/src/exceptions.dart'); | 
| +#source('../../../../corelib/src/expando.dart'); | 
| #source('../../../../corelib/src/expect.dart'); | 
| #source('../../../../corelib/src/function.dart'); | 
| #source('../../../../corelib/src/future.dart'); | 
|  |