111 lines
3.3 KiB
Objective-C
111 lines
3.3 KiB
Objective-C
// RUN: %clang_cc1 -analyze -analyzer-checker=alpha.core -analyzer-checker=deadcode.DeadStores,osx.cocoa.RetainCount -fblocks -verify -Wno-objc-root-class %s
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// expected-no-diagnostics
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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 <-> deadcode.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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// This test case issuing a bogus warning for the declaration of 'isExec'
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// because the compound statement for the @synchronized was being visited
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// twice by the LiveVariables analysis.
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BOOL baz_rdar8527823();
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void foo_rdar8527823();
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@interface RDar8527823
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- (void) bar_rbar8527823;
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@end
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@implementation RDar8527823
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- (void) bar_rbar8527823
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{
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@synchronized(self) {
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BOOL isExec = baz_rdar8527823(); // no-warning
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if (isExec) foo_rdar8527823();
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}
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}
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@end
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// Don't flag dead stores to assignments to self within a nested assignment.
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@interface Rdar7947686
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- (id) init;
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@end
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@interface Rdar7947686_B : Rdar7947686
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- (id) init;
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@end
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@implementation Rdar7947686_B
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- (id) init {
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id x = (self = [super init]); // no-warning
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return x;
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}
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@end
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// Don't flag dead stores when a variable is captured in a block used
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// by a property access.
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@interface RDar10591355
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@property (assign) int x;
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@end
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RDar10591355 *rdar10591355_aux();
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void rdar10591355() {
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RDar10591355 *p = rdar10591355_aux();
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^{ (void) p.x; }();
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}
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@interface Radar11059352_1 {
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@private
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int *_pathString;
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}
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@property int *pathString;
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@end
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@interface Radar11059352 {
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@private
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Radar11059352_1 *_Path;
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}
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@end
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@implementation Radar11059352
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- (int*)usePath {
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Radar11059352_1 *xxxxx = _Path; // no warning
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int *wp = xxxxx.pathString;
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return wp;
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}
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@end
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