|  | // RUN: %clang_cc1 -fsyntax-only -verify %s | 
|  |  | 
|  | typedef signed char BOOL; | 
|  | typedef unsigned int NSUInteger; | 
|  | typedef struct _NSZone NSZone; | 
|  | @class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator; | 
|  | @protocol NSObject  - (BOOL)isEqual:(id)object; @end | 
|  | @protocol NSCopying  - (id)copyWithZone:(NSZone *)zone; @end // expected-note {{method 'copyWithZone:' declared here}} | 
|  | @protocol NSMutableCopying  - (id)mutableCopyWithZone:(NSZone *)zone; @end | 
|  | @protocol NSCoding  - (void)encodeWithCoder:(NSCoder *)aCoder; @end | 
|  | @interface NSObject <NSObject> {} @end | 
|  | typedef struct {} NSFastEnumerationState; | 
|  | @protocol NSFastEnumeration  - (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len; @end | 
|  | @interface NSDictionary : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration>  - (NSUInteger)count; @end | 
|  | @interface NSMutableDictionary : NSDictionary  - (void)removeObjectForKey:(id)aKey; @end // expected-note {{receiver is instance of class declared here}} | 
|  | extern NSString * const NSTaskDidTerminateNotification; | 
|  |  | 
|  | @interface XCPropertyExpansionContext : NSObject <NSCopying> { | 
|  | NSMutableDictionary * _propNamesToPropValuesCache; | 
|  | } @end | 
|  |  | 
|  | @protocol XCPropertyValues <NSObject, NSCopying> | 
|  | - (NSString *)evaluateAsStringInContext:(XCPropertyExpansionContext *)context withNestingState:(const void *)state; | 
|  | @end | 
|  |  | 
|  | @implementation XCPropertyExpansionContext // expected-warning {{method 'copyWithZone:' in protocol 'NSCopying' not implemented}} | 
|  | - (NSString *)expandedValueForProperty:(NSString *)property { | 
|  | id <XCPropertyValues> cachedValueNode = [_propNamesToPropValuesCache objectForKey:property]; // expected-warning {{method '-objectForKey:' not found (return type defaults to 'id')}} | 
|  | if (cachedValueNode == ((void *)0)) { } | 
|  | NSString * expandedValue = [cachedValueNode evaluateAsStringInContext:self withNestingState:((void *)0)]; | 
|  | return expandedValue; | 
|  | } | 
|  | @end |