File: ObjCImproperDynamictallyDetectableCast.m

package info (click to toggle)
llvm-toolchain-7 1%3A7.0.1-8
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 733,456 kB
  • sloc: cpp: 3,776,651; ansic: 633,271; asm: 350,301; python: 142,716; objc: 107,612; sh: 22,626; lisp: 11,056; perl: 7,999; pascal: 6,742; ml: 5,537; awk: 3,536; makefile: 2,557; cs: 2,027; xml: 841; ruby: 156
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