|
150
|
1 // RUN: %clang_cc1 -triple=x86_64-apple-darwin -fsyntax-only -verify %s
|
|
|
2
|
|
|
3 //====------------------------------------------------------------====//
|
|
|
4 // Test deprecated direct usage of the 'isa' pointer.
|
|
|
5 //====------------------------------------------------------------====//
|
|
|
6
|
|
|
7 typedef unsigned long NSUInteger;
|
|
|
8
|
|
|
9 typedef struct objc_object {
|
|
|
10 struct objc_class *isa;
|
|
|
11 } *id;
|
|
|
12
|
|
|
13 @interface NSObject {
|
|
|
14 id firstobj;
|
|
|
15 struct objc_class *isa;
|
|
|
16 }
|
|
|
17 - (id)performSelector:(SEL)aSelector;;
|
|
|
18 @end
|
|
|
19 @interface Whatever : NSObject
|
|
|
20 +self;
|
|
|
21 -(id)foo;
|
|
|
22 @end
|
|
|
23
|
|
|
24 static void func() {
|
|
|
25
|
|
|
26 id x;
|
|
|
27
|
|
|
28 // rdar://8290002
|
|
|
29 [(*x).isa self]; // expected-warning {{direct access to Objective-C's isa is deprecated in favor of object_getClass()}}
|
|
|
30 [x->isa self]; // expected-warning {{direct access to Objective-C's isa is deprecated in favor of object_getClass()}}
|
|
|
31
|
|
|
32 Whatever *y;
|
|
|
33
|
|
|
34 // GCC allows this, with the following warning:
|
|
|
35 // instance variable 'isa' is @protected; this will be a hard error in the future
|
|
|
36 //
|
|
|
37 // FIXME: see if we can avoid the warning that follows the error.
|
|
|
38 [(*y).isa self]; // expected-error {{instance variable 'isa' is protected}} \
|
|
|
39 expected-warning{{receiver type 'struct objc_class *' is not 'id' or interface pointer, consider casting it to 'id'}}
|
|
|
40 [y->isa self]; // expected-error {{instance variable 'isa' is protected}} \
|
|
|
41 expected-warning{{receiver type 'struct objc_class *' is not 'id' or interface pointer, consider casting it to 'id'}}
|
|
|
42 }
|
|
|
43
|
|
|
44 // rdar://11702488
|
|
|
45 // If an ivar is (1) the first ivar in a root class and (2) named `isa`,
|
|
|
46 // then it should get the same warnings that id->isa gets.
|
|
|
47
|
|
|
48 @interface BaseClass {
|
|
|
49 @public
|
|
|
50 Class isa; // expected-note 4 {{instance variable is declared here}}
|
|
|
51 }
|
|
|
52 @end
|
|
|
53
|
|
|
54 @interface OtherClass {
|
|
|
55 @public
|
|
|
56 id firstIvar;
|
|
|
57 Class isa; // note, not first ivar;
|
|
|
58 }
|
|
|
59 @end
|
|
|
60
|
|
|
61 @interface Subclass : BaseClass @end
|
|
|
62
|
|
|
63 @interface SiblingClass : BaseClass @end
|
|
|
64
|
|
|
65 @interface Root @end
|
|
|
66
|
|
|
67 @interface hasIsa : Root {
|
|
|
68 @public
|
|
|
69 Class isa; // note, isa is not in root class
|
|
|
70 }
|
|
|
71 @end
|
|
|
72
|
|
|
73 @implementation Subclass
|
|
|
74 -(void)method {
|
|
|
75 hasIsa *u;
|
|
|
76 id v;
|
|
|
77 BaseClass *w;
|
|
|
78 Subclass *x;
|
|
|
79 SiblingClass *y;
|
|
|
80 OtherClass *z;
|
|
|
81 (void)v->isa; // expected-warning {{direct access to Objective-C's isa is deprecated in favor of object_getClass()}}
|
|
|
82 (void)w->isa; // expected-warning {{direct access to Objective-C's isa is deprecated in favor of object_getClass()}}
|
|
|
83 (void)x->isa; // expected-warning {{direct access to Objective-C's isa is deprecated in favor of object_getClass()}}
|
|
|
84 (void)y->isa; // expected-warning {{direct access to Objective-C's isa is deprecated in favor of object_getClass()}}
|
|
|
85 (void)z->isa;
|
|
|
86 (void)u->isa;
|
|
|
87
|
|
|
88 w->isa = 0; // expected-warning {{assignment to Objective-C's isa is deprecated in favor of object_setClass()}}
|
|
|
89 }
|
|
|
90 @end
|
|
|
91
|
|
|
92 // Test for introspection of Objective-C pointers via bitmasking.
|
|
|
93
|
|
|
94 void testBitmasking(NSObject *p) {
|
|
|
95 (void) (((NSUInteger) p) & 0x1); // expected-warning {{bitmasking for introspection of Objective-C object pointers is strongly discouraged}}
|
|
|
96 (void) (0x1 & ((NSUInteger) p)); // expected-warning {{bitmasking for introspection of Objective-C object pointers is strongly discouraged}}
|
|
|
97 (void) (((NSUInteger) p) ^ 0x1); // no-warning
|
|
|
98 (void) (0x1 ^ ((NSUInteger) p)); // no-warning
|
|
|
99 (void) (0x1 & ((NSUInteger) [p performSelector:@selector(foo)])); // expected-warning {{bitmasking for introspection of Objective-C object pointers is strongly discouraged}}
|
|
|
100 #pragma clang diagnostic push
|
|
|
101 #pragma clang diagnostic ignored "-Wdeprecated-objc-pointer-introspection-performSelector"
|
|
|
102 (void) (0x1 & ((NSUInteger) [p performSelector:@selector(foo)])); // no-warning
|
|
|
103 #pragma clang diagnostic pop
|
|
|
104 } |
