File: ObjCImproperDynamictallyDetectableCast.m

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (37 lines) | stat: -rw-r--r-- 885 bytes parent folder | download | duplicates (28) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
// RUN: %clang_analyze_cc1 -analyzer-checker=core,debug.ExprInspection -analyzer-config ipa=dynamic-bifurcate -verify %s

typedef signed char BOOL;
@protocol NSObject  - (BOOL)isEqual:(id)object; @end
@interface NSObject <NSObject> {}
+(id)alloc;
-(id)init;
+(id)new;
-(id)autorelease;
-(id)copy;
- (Class)class;
-(id)retain;
@end
void clang_analyzer_eval(BOOL);

@interface SomeOtherClass : NSObject
- (int)getZero;
@end
@implementation SomeOtherClass
- (int)getZero { return 0; }
@end

@interface MyClass : NSObject
- (int)getZero;
@end

@implementation MyClass
- (int)getZero { return 1; }

// TODO: Not only we should correctly determine that the type of o at runtime 
// is MyClass, but we should also warn about it. 
+ (void) testCastToParent {
  id a = [[self alloc] init];
  SomeOtherClass *o = a;  
  clang_analyzer_eval([o getZero] == 0); // expected-warning{{FALSE}}
}
@end