forked from OSchip/llvm-project
44 lines
1.9 KiB
Objective-C
44 lines
1.9 KiB
Objective-C
// RUN: %clang_cc1 -analyze -analyzer-experimental-internal-checks -analyzer-check-dead-stores -verify %s
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typedef signed char BOOL;
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typedef unsigned int NSUInteger;
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typedef struct _NSZone NSZone;
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@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
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@protocol NSObject - (BOOL)isEqual:(id)object; @end
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@protocol NSCopying - (id)copyWithZone:(NSZone *)zone; @end
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@protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder; @end
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@interface NSObject <NSObject> {} @end
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extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);
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@interface NSValue : NSObject <NSCopying, NSCoding> - (void)getValue:(void *)value; @end
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typedef float CGFloat;
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typedef struct _NSPoint {} NSRange;
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@interface NSValue (NSValueRangeExtensions) + (NSValue *)valueWithRange:(NSRange)range;
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- (BOOL)containsObject:(id)anObject;
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@end
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@class NSURLAuthenticationChallenge;
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@interface NSResponder : NSObject <NSCoding> {} @end
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@class NSArray, NSDictionary, NSString;
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@interface NSObject (NSKeyValueBindingCreation)
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+ (void)exposeBinding:(NSString *)binding;
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- (NSArray *)exposedBindings;
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@end
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extern NSString *NSAlignmentBinding;
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// This test case was reported as a false positive due to a bug in the
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// LiveVariables <-> DeadStores interplay. We should not flag a warning
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// here. The test case was reported in:
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// http://lists.cs.uiuc.edu/pipermail/cfe-dev/2008-July/002157.html
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void DeadStoreTest(NSObject *anObject) {
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NSArray *keys;
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if ((keys = [anObject exposedBindings]) && // no-warning
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([keys containsObject:@"name"] && [keys containsObject:@"icon"])) {}
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}
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// This test case was a false positive due to how clang models
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// pointer types and ObjC object pointer types differently. Here
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// we don't warn about a dead store because 'nil' is assigned to
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// an object pointer for the sake of defensive programming.
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void rdar_7631278(NSObject *x) {
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x = ((void*)0);
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}
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