Fariborz Jahanian | 56242ba | 2012-06-21 18:43:08 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -verify -Wno-deprecated-declarations -Wno-objc-root-class %s |
Douglas Gregor | 926df6c | 2011-06-11 01:09:30 +0000 | [diff] [blame] | 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> |
Fariborz Jahanian | fefe91e | 2011-07-28 23:19:50 +0000 | [diff] [blame] | 152 | @interface G |
Ted Kremenek | 3306ec1 | 2012-02-27 22:55:11 +0000 | [diff] [blame] | 153 | - (id)_ABC_init __attribute__((objc_method_family(init))); // expected-note {{method '_ABC_init' declared here}} |
Douglas Gregor | 926df6c | 2011-06-11 01:09:30 +0000 | [diff] [blame] | 154 | @end |
| 155 | |
| 156 | @interface G (Additions) |
| 157 | - (id)_ABC_init2 __attribute__((objc_method_family(init))); |
| 158 | @end |
| 159 | |
| 160 | @implementation G (Additions) |
Fariborz Jahanian | fefe91e | 2011-07-28 23:19:50 +0000 | [diff] [blame] | 161 | - (id)_ABC_init { // expected-warning {{category is implementing a method which will also be implemented by its primary class}} |
Douglas Gregor | 926df6c | 2011-06-11 01:09:30 +0000 | [diff] [blame] | 162 | return 0; |
| 163 | } |
| 164 | - (id)_ABC_init2 { |
| 165 | return 0; |
| 166 | } |
| 167 | - (id)_ABC_init3 { |
| 168 | return 0; |
| 169 | } |
| 170 | @end |
| 171 | |
Eli Friedman | 38ac243 | 2012-03-30 01:13:43 +0000 | [diff] [blame] | 172 | // PR12384 |
| 173 | @interface Fail @end |
| 174 | @protocol X @end |
| 175 | @implementation Fail |
Fariborz Jahanian | f92a509 | 2013-07-11 16:48:06 +0000 | [diff] [blame] | 176 | - (id<X>) initWithX // expected-note {{compiler has implicitly changed method 'initWithX' return type}} |
Eli Friedman | 38ac243 | 2012-03-30 01:13:43 +0000 | [diff] [blame] | 177 | { |
Fariborz Jahanian | f5200d6 | 2013-07-11 19:13:34 +0000 | [diff] [blame] | 178 | return (id)self; // expected-warning {{casting 'Fail *' to incompatible type 'id<X>'}} |
Eli Friedman | 38ac243 | 2012-03-30 01:13:43 +0000 | [diff] [blame] | 179 | } |
| 180 | @end |
Douglas Gregor | 0a4a23a | 2012-05-17 23:13:29 +0000 | [diff] [blame] | 181 | |
| 182 | // <rdar://problem/11460990> |
| 183 | |
| 184 | @interface WeirdNSString : NSString |
| 185 | - (id)initWithCString:(const char*)string, void *blah; |
| 186 | @end |
Fariborz Jahanian | f92a509 | 2013-07-11 16:48:06 +0000 | [diff] [blame] | 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; |
Fariborz Jahanian | f5200d6 | 2013-07-11 19:13:34 +0000 | [diff] [blame] | 200 | return filterVC; // expected-warning {{incompatible pointer types casting 'UIViewController *' to type 'UIViewController<PMFilterManager> *'}} |
Fariborz Jahanian | f92a509 | 2013-07-11 16:48:06 +0000 | [diff] [blame] | 201 | } |
| 202 | @end |