1 // RUN: %clang_cc1 -analyze -analyzer-checker=experimental.core -analyzer-checker=deadcode.DeadStores,osx.cocoa.RetainCount -verify %s
3 typedef signed char BOOL;
4 typedef unsigned int NSUInteger;
5 typedef struct _NSZone NSZone;
6 @class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
7 @protocol NSObject - (BOOL)isEqual:(id)object; @end
8 @protocol NSCopying - (id)copyWithZone:(NSZone *)zone; @end
9 @protocol NSCoding - (void)encodeWithCoder:(NSCoder *)aCoder; @end
10 @interface NSObject <NSObject> {} @end
11 extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);
12 @interface NSValue : NSObject <NSCopying, NSCoding> - (void)getValue:(void *)value; @end
13 typedef float CGFloat;
14 typedef struct _NSPoint {} NSRange;
15 @interface NSValue (NSValueRangeExtensions) + (NSValue *)valueWithRange:(NSRange)range;
16 - (BOOL)containsObject:(id)anObject;
18 @class NSURLAuthenticationChallenge;
19 @interface NSResponder : NSObject <NSCoding> {} @end
20 @class NSArray, NSDictionary, NSString;
21 @interface NSObject (NSKeyValueBindingCreation)
22 + (void)exposeBinding:(NSString *)binding;
23 - (NSArray *)exposedBindings;
25 extern NSString *NSAlignmentBinding;
27 // This test case was reported as a false positive due to a bug in the
28 // LiveVariables <-> deadcode.DeadStores interplay. We should not flag a warning
29 // here. The test case was reported in:
30 // http://lists.cs.uiuc.edu/pipermail/cfe-dev/2008-July/002157.html
31 void DeadStoreTest(NSObject *anObject) {
33 if ((keys = [anObject exposedBindings]) && // no-warning
34 ([keys containsObject:@"name"] && [keys containsObject:@"icon"])) {}
37 // This test case was a false positive due to how clang models
38 // pointer types and ObjC object pointer types differently. Here
39 // we don't warn about a dead store because 'nil' is assigned to
40 // an object pointer for the sake of defensive programming.
41 void rdar_7631278(NSObject *x) {
45 // This test case issuing a bogus warning for the declaration of 'isExec'
46 // because the compound statement for the @synchronized was being visited
47 // twice by the LiveVariables analysis.
48 BOOL baz_rdar8527823();
49 void foo_rdar8527823();
50 @interface RDar8527823
51 - (void) bar_rbar8527823;
53 @implementation RDar8527823
54 - (void) bar_rbar8527823
57 BOOL isExec = baz_rdar8527823(); // no-warning
58 if (isExec) foo_rdar8527823();
63 // Don't flag dead stores to assignments to self within a nested assignment.
64 @interface Rdar7947686
68 @interface Rdar7947686_B : Rdar7947686
72 @implementation Rdar7947686_B
74 id x = (self = [super init]); // no-warning