weak-attr-ivar.m
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// 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
@protocol NSMutableCopying - (id)mutableCopyWithZone:(NSZone *)zone;
@end
@protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder;
@end
@interface NSObject <NSObject> {}
@end
extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);
typedef struct {
id *itemsPtr;
unsigned long *mutationsPtr;
} NSFastEnumerationState;
@protocol NSFastEnumeration
- (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len;
@end
@class NSString;
@interface NSArray : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration> - (NSUInteger)count;
@end
@interface NSMutableArray : NSArray - (void)addObject:(id)anObject;
@end
extern NSString * const NSUndoManagerCheckpointNotification;
@interface NSValueTransformer : NSObject {} @end
@class FooModel;
@interface FooObject : NSObject <NSCopying> {}
@end
@interface FooNode : FooObject {}
- (NSArray *) children;
@end
typedef enum { Foo_HUH_NONE } FooHUHCode;
@interface FooPlaypenEntry : FooNode {
NSMutableArray *_interestingChildren;
FooHUHCode _HUH;
__attribute__((objc_gc(weak))) FooPlaypenEntry *_mostInterestingChild;
id _author;
}
@property(copy) NSString *author;
- (BOOL) isInteresting;
@end NSString *FooHUHCodeToString(FooHUHCode HUH) { return 0; }
@interface FooHUHCodeToStringTransformer: NSValueTransformer {
}
@end @implementation FooPlaypenEntry @synthesize author = _author;
- (BOOL) isInteresting { return 1; }
- (NSArray *) interestingChildren {
if (!_interestingChildren) {
for (FooPlaypenEntry *child in [self children]) {
if ([child isInteresting]) {
if (!_mostInterestingChild)
_mostInterestingChild = child;
else if (child->_HUH > _mostInterestingChild->_HUH)
_mostInterestingChild = child;
}
}
}
return 0;
}
- (FooHUHCode) HUH {
if (_HUH == Foo_HUH_NONE) {
if (_mostInterestingChild)
return [_mostInterestingChild HUH];
}
return 0;
}
@end
// rdar://problem/9123040
@interface Test1 {
@public
id ivar __attribute__((objc_gc(weak)));
}
@property (assign) id prop __attribute((objc_gc(weak)));
@end
void test1(Test1 *t) {
id *(__attribute__((objc_gc(strong))) x) = &t->ivar; // expected-warning {{initializing '__strong id *' with an expression of type '__weak id *' discards qualifiers}}
}