blob: 9a9820c3b2a4cc74b4e0f90157b3334f367ea294 (
about) (
plain)
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
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
// RUN: %clang_cc1 -analyze -analyzer-store=region -analyzer-constraints=range -fblocks -analyzer-opt-analyze-nested-blocks -analyzer-checker=experimental.deadcode.IdempotentOperations,osx.cocoa.RetainCount -verify %s
typedef signed char BOOL;
typedef unsigned long NSUInteger;
typedef struct _NSZone NSZone;
@protocol NSObject - (BOOL)isEqual:(id)object;
@end
@interface NSObject {}
@property int locked;
@property(nonatomic, readonly) NSObject *media;
@end
// <rdar://problem/8725041> - Don't flag idempotent operation warnings when
// a method may invalidate an instance variable.
@interface Rdar8725041 : NSObject {
id _attribute;
}
- (void) method2;
@end
@implementation Rdar8725041
- (BOOL) method1 {
BOOL needsUpdate = (BOOL)0;
id oldAttribute = _attribute;
[self method2];
needsUpdate |= (_attribute != oldAttribute); // no-warning
return needsUpdate;
}
- (void) method2
{
_attribute = ((void*)0);
}
@end
// Test that the idempotent operations checker works in the prescence
// of property expressions.
void pr9116(NSObject *placeholder) {
int x = placeholder.media.locked = placeholder ? 1 : 0;
}
// <rdar://problem/9130239>: Test that calling property setters doesn't
// trigger an assertion failure when the object is nil.
@interface RDar9130239
@property (assign) id delegate;
@end
void test_RDar9130239(RDar9130239 *x) {
if (x)
return;
x.delegate = x; // no-warning
}
|
