mrc-weak.m
2.72 KB
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// RUN: %clang_cc1 -fobjc-runtime-has-weak -fobjc-weak -fsyntax-only -verify %s
__attribute__((objc_root_class))
@interface A
@property (weak) id wa; // expected-note {{property declared here}}
@property (weak) id wb;
@property (weak) id wc; // expected-note {{property declared here}}
@property (weak) id wd;
@property (unsafe_unretained) id ua;
@property (unsafe_unretained) id ub; // expected-note {{property declared here}}
@property (unsafe_unretained) id uc;
@property (unsafe_unretained) id ud;
@property (strong) id sa;
@property (strong) id sb; // expected-note {{property declared here}}
@property (strong) id sc;
@property (strong) id sd;
@end
@implementation A {
id _wa; // expected-error {{existing instance variable '_wa' for __weak property 'wa' must be __weak}}
__weak id _wb;
__unsafe_unretained id _wc; // expected-error {{existing instance variable '_wc' for __weak property 'wc' must be __weak}}
id _ua;
__weak id _ub; // expected-error {{existing instance variable '_ub' for property 'ub' with unsafe_unretained attribute must be __unsafe_unretained}}
__unsafe_unretained id _uc;
id _sa;
__weak id _sb; // expected-error {{existing instance variable '_sb' for strong property 'sb' may not be __weak}}
__unsafe_unretained id _sc;
}
@synthesize wa = _wa; // expected-note {{property synthesized here}}
@synthesize wb = _wb;
@synthesize wc = _wc; // expected-note {{property synthesized here}}
@synthesize wd = _wd;
@synthesize ua = _ua;
@synthesize ub = _ub; // expected-note {{property synthesized here}}
@synthesize uc = _uc;
@synthesize ud = _ud;
@synthesize sa = _sa;
@synthesize sb = _sb; // expected-note {{property synthesized here}}
@synthesize sc = _sc;
@synthesize sd = _sd;
@end
void test_goto() {
goto after; // expected-error {{cannot jump from this goto statement to its label}}
__weak id x; // expected-note {{jump bypasses initialization of __weak variable}}}
after:
return;
}
void test_weak_cast(id *value) {
__weak id *a = (__weak id*) value;
id *b = (__weak id*) value; // expected-error {{initializing 'id *' with an expression of type '__weak id *' changes retain/release properties of pointer}}
__weak id *c = (id*) value; // expected-error {{initializing '__weak id *' with an expression of type 'id *' changes retain/release properties of pointer}}
}
void test_unsafe_unretained_cast(id *value) {
__unsafe_unretained id *a = (__unsafe_unretained id*) value;
id *b = (__unsafe_unretained id*) value;
__unsafe_unretained id *c = (id*) value;
}
void test_cast_qualifier_inference(__weak id *value) {
__weak id *a = (id*) value;
__unsafe_unretained id *b = (id *)value; // expected-error {{initializing 'id *' with an expression of type '__weak id *' changes retain/release properties of pointer}}
}