|  | // RUN: %clang_cc1 -x objective-c -fsyntax-only -verify -Wno-objc-root-class %s | 
|  | // RUN: %clang_cc1 -x objective-c++ -fsyntax-only -verify -Wno-objc-root-class %s | 
|  | // rdar://10593227 | 
|  |  | 
|  | @class UIWindow; | 
|  |  | 
|  | @interface CNAppDelegate | 
|  |  | 
|  | @property (strong, nonatomic) UIWindow *window; | 
|  |  | 
|  | @end | 
|  |  | 
|  |  | 
|  | @interface CNAppDelegate () | 
|  | @property (nonatomic,retain) id foo; | 
|  | @end | 
|  |  | 
|  | @implementation CNAppDelegate | 
|  | @synthesize foo; | 
|  | @synthesize window = _window; | 
|  |  | 
|  | +(void)myClassMethod; | 
|  | { | 
|  | foo = 0; // expected-error {{instance variable 'foo' accessed in class method}} | 
|  | } | 
|  | @end |