1 | // RUN: %clang_cc1 -verify -Wno-deprecated-declarations -Wno-objc-root-class %s |
2 | |
3 | @interface Unrelated |
4 | @end |
5 | |
6 | @interface NSObject |
7 | + (id)new; |
8 | + (id)alloc; |
9 | - (NSObject *)init; |
10 | |
11 | - (id)retain; // expected-note{{instance method 'retain' is assumed to return an instance of its receiver type ('NSArray *')}} |
12 | - autorelease; |
13 | |
14 | - (id)self; |
15 | |
16 | - (id)copy; |
17 | - (id)mutableCopy; |
18 | |
19 | // Do not infer when instance/class mismatches |
20 | - (id)newNotInferred; |
21 | - (id)alloc; |
22 | + (id)initWithBlarg; |
23 | + (id)self; |
24 | |
25 | // Do not infer when the return types mismatch. |
26 | - (Unrelated *)initAsUnrelated; |
27 | @end |
28 | |
29 | @interface NSString : NSObject |
30 | - (id)init; |
31 | - (id)initWithCString:(const char*)string; |
32 | @end |
33 | |
34 | @interface NSArray : NSObject |
35 | - (unsigned)count; |
36 | @end |
37 | |
38 | @interface NSBlah |
39 | @end |
40 | |
41 | @interface NSMutableArray : NSArray |
42 | @end |
43 | |
44 | @interface NSBlah () |
45 | + (Unrelated *)newUnrelated; |
46 | @end |
47 | |
48 | void test_inference() { |
49 | // Inference based on method family |
50 | __typeof__(([[NSString alloc] init])) *str = (NSString**)0; |
51 | __typeof__(([[[[NSString new] self] retain] autorelease])) *str2 = (NSString **)0; |
52 | __typeof__(([[NSString alloc] initWithCString:"blah"])) *str3 = (NSString**)0; |
53 | |
54 | // Not inferred |
55 | __typeof__(([[NSString new] copy])) *id1 = (id*)0; |
56 | |
57 | // Not inferred due to instance/class mismatches |
58 | __typeof__(([[NSString new] newNotInferred])) *id2 = (id*)0; |
59 | __typeof__(([[NSString new] alloc])) *id3 = (id*)0; |
60 | __typeof__(([NSString self])) *id4 = (id*)0; |
61 | __typeof__(([NSString initWithBlarg])) *id5 = (id*)0; |
62 | |
63 | // Not inferred due to return type mismatch |
64 | __typeof__(([[NSString alloc] initAsUnrelated])) *unrelated = (Unrelated**)0; |
65 | __typeof__(([NSBlah newUnrelated])) *unrelated2 = (Unrelated**)0; |
66 | |
67 | |
68 | NSArray *arr = [[NSMutableArray alloc] init]; |
69 | NSMutableArray *marr = [arr retain]; // expected-warning{{incompatible pointer types initializing 'NSMutableArray *' with an expression of type 'NSArray *'}} |
70 | } |
71 | |
72 | @implementation NSBlah |
73 | + (Unrelated *)newUnrelated { |
74 | return (Unrelated *)0; |
75 | } |
76 | @end |
77 | |
78 | @implementation NSBlah (Cat) |
79 | + (Unrelated *)newUnrelated2 { |
80 | return (Unrelated *)0; |
81 | } |
82 | @end |
83 | |
84 | @interface A |
85 | - (id)initBlah; // expected-note 2{{overridden method is part of the 'init' method family}} |
86 | @end |
87 | |
88 | @interface B : A |
89 | - (Unrelated *)initBlah; // expected-warning{{method is expected to return an instance of its class type 'B', but is declared to return 'Unrelated *'}} |
90 | @end |
91 | |
92 | @interface C : A |
93 | @end |
94 | |
95 | @implementation C |
96 | - (Unrelated *)initBlah { // expected-warning{{method is expected to return an instance of its class type 'C', but is declared to return 'Unrelated *'}} |
97 | return (Unrelated *)0; |
98 | } |
99 | @end |
100 | |
101 | @interface D |
102 | + (id)newBlarg; // expected-note{{overridden method is part of the 'new' method family}} |
103 | @end |
104 | |
105 | @interface D () |
106 | + alloc; // expected-note{{overridden method is part of the 'alloc' method family}} |
107 | @end |
108 | |
109 | @implementation D |
110 | + (Unrelated *)newBlarg { // expected-warning{{method is expected to return an instance of its class type 'D', but is declared to return 'Unrelated *'}} |
111 | return (Unrelated *)0; |
112 | } |
113 | |
114 | + (Unrelated *)alloc { // expected-warning{{method is expected to return an instance of its class type 'D', but is declared to return 'Unrelated *'}} |
115 | return (Unrelated *)0; |
116 | } |
117 | @end |
118 | |
119 | @protocol P1 |
120 | - (id)initBlah; // expected-note{{overridden method is part of the 'init' method family}} |
121 | - (int)initBlarg; |
122 | @end |
123 | |
124 | @protocol P2 <P1> |
125 | - (int)initBlah; // expected-warning{{protocol method is expected to return an instance of the implementing class, but is declared to return 'int'}} |
126 | - (int)initBlarg; |
127 | - (int)initBlech; |
128 | @end |
129 | |
130 | @interface E |
131 | - init; |
132 | @end |
133 | |
134 | @implementation E |
135 | - init { |
136 | return self; |
137 | } |
138 | @end |
139 | |
140 | @protocol P3 |
141 | + (NSString *)newString; |
142 | @end |
143 | |
144 | @interface F<P3> |
145 | @end |
146 | |
147 | @implementation F |
148 | + (NSString *)newString { return @"blah"; } |
149 | @end |
150 | |
151 | // <rdar://problem/9340699> |
152 | @interface G |
153 | - (id)_ABC_init __attribute__((objc_method_family(init))); // expected-note {{method '_ABC_init' declared here}} |
154 | @end |
155 | |
156 | @interface G (Additions) |
157 | - (id)_ABC_init2 __attribute__((objc_method_family(init))); |
158 | @end |
159 | |
160 | @implementation G (Additions) |
161 | - (id)_ABC_init { // expected-warning {{category is implementing a method which will also be implemented by its primary class}} |
162 | return 0; |
163 | } |
164 | - (id)_ABC_init2 { |
165 | return 0; |
166 | } |
167 | - (id)_ABC_init3 { |
168 | return 0; |
169 | } |
170 | @end |
171 | |
172 | // PR12384 |
173 | @interface Fail @end |
174 | @protocol X @end |
175 | @implementation Fail |
176 | - (id<X>) initWithX // expected-note {{compiler has implicitly changed method 'initWithX' return type}} |
177 | { |
178 | return (id)self; // expected-warning {{casting 'Fail *' to incompatible type 'id<X>'}} |
179 | } |
180 | @end |
181 | |
182 | // <rdar://problem/11460990> |
183 | |
184 | @interface WeirdNSString : NSString |
185 | - (id)initWithCString:(const char*)string, void *blah; |
186 | @end |
187 | |
188 | |
189 | // rdar://14121570 |
190 | @protocol PMFilterManager |
191 | @end |
192 | |
193 | @interface UIViewController : NSObject |
194 | @end |
195 | |
196 | @implementation UIViewController |
197 | + (UIViewController<PMFilterManager> *)newFilterViewControllerForType // expected-note {{compiler has implicitly changed method 'newFilterViewControllerForType' return type}} |
198 | { |
199 | UIViewController<PMFilterManager> *filterVC; |
200 | return filterVC; // expected-warning {{incompatible pointer types casting 'UIViewController *' to type 'UIViewController<PMFilterManager> *'}} |
201 | } |
202 | @end |
203 | |