|  | // RUN: %clang_cc1 -fsyntax-only -verify -Wno-objc-root-class %s | 
|  | // expected-no-diagnostics | 
|  |  | 
|  | typedef struct objc_class *Class; | 
|  |  | 
|  | struct objc_class { | 
|  | Class isa; | 
|  | }; | 
|  |  | 
|  | typedef struct objc_object { | 
|  | Class isa; | 
|  | } *id; | 
|  |  | 
|  | @interface XCActivityLogSection | 
|  | + (unsigned)serializationFormatVersion; | 
|  | + (unsigned)sectionByDeserializingData; | 
|  | + (Class)retursClass; | 
|  | @end | 
|  |  | 
|  | @implementation XCActivityLogSection | 
|  |  | 
|  | + (unsigned)serializationFormatVersion | 
|  | { | 
|  |  | 
|  | return 0; | 
|  | } | 
|  | + (unsigned)sectionByDeserializingData { | 
|  | unsigned version; | 
|  | return self.serializationFormatVersion; | 
|  | } | 
|  |  | 
|  | + (Class)retursClass { | 
|  | Class version; | 
|  | // FIXIT. (*version).isa does not work. Results in compiler error. | 
|  | return version->isa; | 
|  | } | 
|  |  | 
|  | @end | 
|  |  | 
|  |  |