| 1 | // RUN: %clang_cc1 -verify %s |
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| 2 | |
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| 3 | @interface Unrelated |
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| 4 | @end |
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| 5 | |
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| 6 | @interface NSObject |
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| 7 | + (id)new; |
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| 8 | + (id)alloc; |
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| 9 | - (NSObject *)init; |
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| 10 | |
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| 11 | - (id)retain; // expected-note 2{{instance method 'retain' is assumed to return an instance of its receiver type ('NSArray *')}} |
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| 12 | - autorelease; |
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| 13 | |
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| 14 | - (id)self; |
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| 15 | |
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| 16 | - (id)copy; |
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| 17 | - (id)mutableCopy; |
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| 18 | |
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| 19 | // Do not infer when instance/class mismatches |
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| 20 | - (id)newNotInferred; |
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| 21 | - (id)alloc; |
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| 22 | + (id)initWithBlarg; |
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| 23 | + (id)self; |
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| 24 | |
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| 25 | // Do not infer when the return types mismatch. |
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| 26 | - (Unrelated *)initAsUnrelated; |
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| 27 | @end |
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| 28 | |
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| 29 | @interface NSString : NSObject |
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| 30 | - (id)init; |
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| 31 | - (id)initWithCString:(const char*)string; |
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| 32 | @end |
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| 33 | |
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| 34 | @interface NSArray : NSObject |
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| 35 | - (unsigned)count; |
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| 36 | @end |
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| 37 | |
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| 38 | @interface NSBlah |
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| 39 | @end |
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| 40 | |
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| 41 | @interface NSMutableArray : NSArray |
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| 42 | @end |
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| 43 | |
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| 44 | @interface NSBlah () |
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| 45 | + (Unrelated *)newUnrelated; |
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| 46 | @end |
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| 47 | |
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| 48 | void test_inference() { |
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| 49 | // Inference based on method family |
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| 50 | __typeof__(([[NSString alloc] init])) *str = (NSString**)0; |
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| 51 | __typeof__(([[[[NSString new] self] retain] autorelease])) *str2 = (NSString **)0; |
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| 52 | __typeof__(([[NSString alloc] initWithCString:"blah"])) *str3 = (NSString**)0; |
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| 53 | |
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| 54 | // Not inferred |
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| 55 | __typeof__(([[NSString new] copy])) *id1 = (id*)0; |
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| 56 | |
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| 57 | // Not inferred due to instance/class mismatches |
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| 58 | __typeof__(([[NSString new] newNotInferred])) *id2 = (id*)0; |
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| 59 | __typeof__(([[NSString new] alloc])) *id3 = (id*)0; |
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| 60 | __typeof__(([NSString self])) *id4 = (id*)0; |
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| 61 | __typeof__(([NSString initWithBlarg])) *id5 = (id*)0; |
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| 62 | |
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| 63 | // Not inferred due to return type mismatch |
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| 64 | __typeof__(([[NSString alloc] initAsUnrelated])) *unrelated = (Unrelated**)0; |
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| 65 | __typeof__(([NSBlah newUnrelated])) *unrelated2 = (Unrelated**)0; |
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| 66 | |
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| 67 | NSArray *arr = [[NSMutableArray alloc] init]; |
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| 68 | NSMutableArray *marr = [arr retain]; // expected-warning{{incompatible pointer types initializing 'NSMutableArray *' with an expression of type 'NSArray *'}} |
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| 69 | marr = [arr retain]; // expected-warning{{incompatible pointer types assigning to 'NSMutableArray *' from 'NSArray *'}} |
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| 70 | arr = [marr retain]; |
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| 71 | } |
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| 72 | |
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