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1// RUN: %clang_cc1 -analyze -analyzer-checker=core,alpha.core -analyzer-store=region -analyzer-constraints=range -verify -triple x86_64-apple-darwin9 -Wno-incomplete-implementation %s
2// expected-no-diagnostics
3
4//===----------------------------------------------------------------------===//
5// Delta-debugging produced forward declarations.
6//===----------------------------------------------------------------------===//
7
8typedef signed char BOOL;
9typedef struct _NSZone NSZone;
10@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
11@protocol NSObject  - (BOOL)isEqual:(id)object;
12@end  @protocol NSCopying  - (id)copyWithZone:(NSZone *)zone;
13@end  @protocol NSMutableCopying  - (id)mutableCopyWithZone:(NSZone *)zone;
14@end  @protocol NSCoding  - (void)encodeWithCoder:(NSCoder *)aCoder;
15@end    @interface NSObject <NSObject> {
16}
17@end    extern id <NSObject> NSAllocateObject(Class aClass, unsigned extraBytes, NSZone *zone);
18@interface NSArray : NSObject <NSCopying, NSMutableCopying, NSCoding>  - (unsigned)count;
19@end   @class NSTimer, NSPort, NSArray;
20@class NSURLHandle, NSMutableArray, NSMutableData, NSData, NSURL;
21@interface NSResponder : NSObject <NSCoding> {
22}
23@end      @class NSBitmapImageRep, NSCursor, NSGraphicsContext, NSImage, NSPasteboard, NSScrollView, NSWindow, NSAttributedString;
24@interface NSView : NSResponder {
25  struct __VFlags2 {
26  }
27  _vFlags2;
28}
29@end @class NSTextField, NSPanel, NSArray, NSWindow, NSImage, NSButton, NSError;
30@interface NSBox : NSView {
31}
32@end @class GDataFeedDocList, GDataServiceTicket, GDataServiceTicket, IHGoogleDocsAdapter;
33@protocol IHGoogleDocsAdapterDelegate  - (void)googleDocsAdapter:(IHGoogleDocsAdapter*)inGoogleDocsAdapter accountVerifyIsValid:(BOOL)inIsValid error:(NSError *)inError;
34@end   @interface IHGoogleDocsAdapter : NSObject {
35}
36- (NSArray *)entries;
37@end extern Class const kGDataUseRegisteredClass ;
38@interface IHGoogleDocsAdapter ()  - (GDataFeedDocList *)feedDocList;
39- (NSArray *)directoryPathComponents;
40- (unsigned int)currentPathComponentIndex;
41- (void)setCurrentPathComponentIndex:(unsigned int)aCurrentPathComponentIndex;
42- (NSURL *)folderFeedURL;
43@end
44
45@implementation IHGoogleDocsAdapter    - (id)initWithUsername:(NSString *)inUsername password:(NSString *)inPassword owner:(NSObject <IHGoogleDocsAdapterDelegate> *)owner {
46  return 0;
47}
48
49//===----------------------------------------------------------------------===//
50// Actual test case:
51//
52// The analyzer currently doesn't reason about ObjCKVCRefExpr.  Have both
53// GRExprEngine::Visit and GRExprEngine::VisitLValue have such expressions
54// evaluate to UnknownVal.
55//===----------------------------------------------------------------------===//
56
57- (void)docListListFetchTicket:(GDataServiceTicket *)ticket               finishedWithFeed:(GDataFeedDocList *)feed {
58  BOOL doGetDir = self.directoryPathComponents != 0 && self.currentPathComponentIndex < [self.directoryPathComponents count];
59  if (doGetDir)  {
60    BOOL isDirExisting = [[self.feedDocList entries] count] > 0;
61    if (isDirExisting)   {
62      if (self.folderFeedURL != 0)    {
63        if (++self.currentPathComponentIndex == [self.directoryPathComponents count])     {
64        }
65      }
66    }
67  }
68}
69@end
70