1 // RUN: %clang_cc1 -fobjc-runtime-has-weak -fobjc-weak -fsyntax-only -verify %s 2 3 __attribute__((objc_root_class)) 4 @interface A 5 @property (weak) id wa; // expected-note {{property declared here}} 6 @property (weak) id wb; 7 @property (weak) id wc; // expected-note {{property declared here}} 8 @property (weak) id wd; 9 @property (unsafe_unretained) id ua; 10 @property (unsafe_unretained) id ub; // expected-note {{property declared here}} 11 @property (unsafe_unretained) id uc; 12 @property (unsafe_unretained) id ud; 13 @property (strong) id sa; 14 @property (strong) id sb; // expected-note {{property declared here}} 15 @property (strong) id sc; 16 @property (strong) id sd; 17 @end 18 19 @implementation A { 20 id _wa; // expected-error {{existing instance variable '_wa' for __weak property 'wa' must be __weak}} 21 __weak id _wb; 22 __unsafe_unretained id _wc; // expected-error {{existing instance variable '_wc' for __weak property 'wc' must be __weak}} 23 id _ua; 24 __weak id _ub; // expected-error {{existing instance variable '_ub' for property 'ub' with unsafe_unretained attribute must be __unsafe_unretained}} 25 __unsafe_unretained id _uc; 26 id _sa; 27 __weak id _sb; // expected-error {{existing instance variable '_sb' for strong property 'sb' may not be __weak}} 28 __unsafe_unretained id _sc; 29 } 30 @synthesize wa = _wa; // expected-note {{property synthesized here}} 31 @synthesize wb = _wb; 32 @synthesize wc = _wc; // expected-note {{property synthesized here}} 33 @synthesize wd = _wd; 34 @synthesize ua = _ua; 35 @synthesize ub = _ub; // expected-note {{property synthesized here}} 36 @synthesize uc = _uc; 37 @synthesize ud = _ud; 38 @synthesize sa = _sa; 39 @synthesize sb = _sb; // expected-note {{property synthesized here}} 40 @synthesize sc = _sc; 41 @synthesize sd = _sd; 42 @end 43 44 void test_goto() { 45 goto after; // expected-error {{cannot jump from this goto statement to its label}} 46 __weak id x; // expected-note {{jump bypasses initialization of __weak variable}}} 47 after: 48 return; 49 } 50 51 void test_weak_cast(id *value) { 52 __weak id *a = (__weak id*) value; 53 id *b = (__weak id*) value; // expected-error {{initializing 'id *' with an expression of type '__weak id *' changes retain/release properties of pointer}} 54 __weak id *c = (id*) value; // expected-error {{initializing '__weak id *' with an expression of type 'id *' changes retain/release properties of pointer}} 55 } 56 57 void test_unsafe_unretained_cast(id *value) { 58 __unsafe_unretained id *a = (__unsafe_unretained id*) value; 59 id *b = (__unsafe_unretained id*) value; 60 __unsafe_unretained id *c = (id*) value; 61 } 62 63 void test_cast_qualifier_inference(__weak id *value) { 64 __weak id *a = (id*) value; 65 __unsafe_unretained id *b = (id*) value; // expected-error {{initializing 'id *' with an expression of type '__weak id *' changes retain/release properties of pointer}} 66 } 67 68
