// RUN: %clang_cc1 -triple x86_64-apple-darwin11 -fobjc-runtime-has-weak -fsyntax-only -fobjc-arc -fblocks -verify -Wno-pointer-to-int-cast -Wno-objc-root-class %s
// RUN: not %clang_cc1 -triple x86_64-apple-darwin11 -fobjc-runtime-has-weak -fsyntax-only -fobjc-arc -fblocks -Wno-pointer-to-int-cast -Wno-objc-root-class -fdiagnostics-parseable-fixits %s 2>&1
typedef unsigned long NSUInteger;
typedef const void * CFTypeRef;
CFTypeRef CFBridgingRetain(id X);
id CFBridgingRelease(CFTypeRef);
@protocol NSCopying @end
@interface NSDictionary
+ (id)dictionaryWithObjects:(const id [])objects forKeys:(const id <NSCopying> [])keys count:(NSUInteger)cnt;
- (void)setObject:(id)object forKeyedSubscript:(id)key;
@end
@class NSFastEnumerationState;
@protocol NSFastEnumeration
- (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id __unsafe_unretained [])buffer count:(NSUInteger)len;
@end
@interface NSNumber
+ (NSNumber *)numberWithInt:(int)value;
@end
@interface NSArray <NSFastEnumeration>
+ (id)arrayWithObjects:(const id [])objects count:(NSUInteger)cnt;
@end
void test0(void (*fn)(int), int val) {
fn(val);
}
@interface A
- (id)retain;
- (id)autorelease;
- (oneway void)release;
- (void)dealloc;
- (NSUInteger)retainCount;
@end
void test1(A *a) {
SEL s = @selector(retain); // expected-error {{ARC forbids use of 'retain' in a @selector}}
s = @selector(release); // expected-error {{ARC forbids use of 'release' in a @selector}}
s = @selector(autorelease); // expected-error {{ARC forbids use of 'autorelease' in a @selector}}
s = @selector(dealloc); // expected-error {{ARC forbids use of 'dealloc' in a @selector}}
[a dealloc]; // expected-error {{ARC forbids explicit message send of 'dealloc'}}
[a retain]; // expected-error {{ARC forbids explicit message send of 'retain'}}
[a retainCount]; // expected-error {{ARC forbids explicit message send of 'retainCount'}}
[a release]; // expected-error {{ARC forbids explicit message send of 'release'}}
[a autorelease]; // expected-error {{ARC forbids explicit message send of 'autorelease'}}
}
@interface Test2 : A
- (void) dealloc;
@end
@implementation Test2
- (void) dealloc {
// This should maybe just be ignored. We're just going to warn about it for now.
[super dealloc]; // expected-error {{ARC forbids explicit message send of 'dealloc'}}
}
@end
// rdar://8843638
@interface I
- (id)retain; // expected-note {{method 'retain' declared here}}
- (id)autorelease; // expected-note {{method 'autorelease' declared here}}
- (oneway void)release; // expected-note {{method 'release' declared here}}
- (NSUInteger)retainCount; // expected-note {{method 'retainCount' declared here}}
@end
@implementation I
- (id)retain{return 0;} // expected-error {{ARC forbids implementation of 'retain'}}
- (id)autorelease{return 0;} // expected-error {{ARC forbids implementation of 'autorelease'}}
- (oneway void)release{} // expected-error {{ARC forbids implementation of 'release'}}
- (NSUInteger)retainCount{ return 0; } // expected-error {{ARC forbids implementation of 'retainCount'}}
@end
@implementation I(CAT)
- (id)retain{return 0;} // expected-error {{ARC forbids implementation of 'retain'}} \
// expected-warning {{category is implementing a method which will also be implemented by its primary class}}
- (id)autorelease{return 0;} // expected-error {{ARC forbids implementation of 'autorelease'}} \
// expected-warning {{category is implementing a method which will also be implemented by its primary class}}
- (oneway void)release{} // expected-error {{ARC forbids implementation of 'release'}} \
// expected-warning {{category is implementing a method which will also be implemented by its primary class}}
- (NSUInteger)retainCount{ return 0; } // expected-error {{ARC forbids implementation of 'retainCount'}} \
// expected-warning {{category is implementing a method which will also be implemented by its primary class}}
@end
// rdar://8861761
@interface B
+ (id)alloc;
- (id)initWithInt: (int) i;
- (id)myInit __attribute__((objc_method_family(init)));
- (id)myBadInit __attribute__((objc_method_family(12))); // expected-error {{'objc_method_family' attribute requires parameter 1 to be an identifier}}
@end
void rdar8861761(void) {
B *o1 = [[B alloc] initWithInt:0];
B *o2 = [B alloc];
[o2 initWithInt:0]; // expected-warning {{expression result unused}}
B *o3 = [[B alloc] myInit];
[[B alloc] myInit]; // expected-warning {{expression result unused}}
}
// rdar://8925835
@interface rdar8925835
- (void)foo:(void (^)(unsigned captureCount, I * const capturedStrings[captureCount]))block;
@end
void test5(void) {
extern void test5_helper(__autoreleasing id *);
id x;
// Okay because of magic temporaries.
test5_helper(&x);
__autoreleasing id *a = &x; // expected-error {{initializing '__autoreleasing id *' with an expression of type '__strong id *' changes retain/release properties of pointer}}
__autoreleasing id *aa;
aa = &x; // expected-error {{assigning '__strong id *' to '__autoreleasing id *' changes retain/release properties of pointer}}
extern void test5_helper2(id const *);
test5_helper2(&x);
extern void test5_helper3(__weak id *); // expected-note {{passing argument to parameter here}}
test5_helper3(&x); // expected-error {{passing '__strong id *' to parameter of type '__weak id *' changes retain/release properties of pointer}}
}
// rdar://problem/8937869
void test6(unsigned cond) {
switch (cond) {
case 0:
;
id x; // expected-note {{jump bypasses initialization of __strong variable}}
case 1: // expected-error {{cannot jump}}
break;
}
}
void test6a(unsigned cond) {
switch (cond) {
case 0:
;
__weak id x; // expected-note {{jump bypasses initialization of __weak variable}}
case 1: // expected-error {{cannot jump}}
break;
}
}
@class NSError;
void test7(void) {
extern void test7_helper(NSError **);
NSError *err;
test7_helper(&err);
}
void test7_weak(void) {
extern void test7_helper(NSError **);
__weak NSError *err;
test7_helper(&err);
}
void test7_unsafe(void) {
extern void test7_helper(NSError **); // expected-note {{passing argument to parameter here}}
__unsafe_unretained NSError *err;
test7_helper(&err); // expected-error {{passing 'NSError *__unsafe_unretained *' to parameter of type 'NSError *__autoreleasing *' changes retain/release properties of pointer}}
}
@class Test8_incomplete;
@interface Test8_complete @end;
@interface Test8_super @end;
@interface Test8 : Test8_super
- (id) init00;
- (id) init01; // expected-note {{declaration in interface}} \
// expected-note{{overridden method}}
- (id) init02; // expected-note{{overridden method}}
- (id) init03; // covariance
- (id) init04; // covariance
- (id) init05; // expected-note{{overridden method}}
- (void) init10; // expected-note {{declaration in interface is not in the 'init' family because its result type is not an object pointer}}
- (void) init11;
- (void) init12;
- (void) init13; // expected-note {{declaration in interface is not in the 'init' family because its result type is not an object pointer}}
- (void) init14; // expected-note {{declaration in interface is not in the 'init' family because its result type is not an object pointer}}
- (void) init15;
// These should be invalid to actually call.
- (Test8_incomplete*) init20;
- (Test8_incomplete*) init21; // expected-note {{declaration in interface}}
- (Test8_incomplete*) init22;
- (Test8_incomplete*) init23;
- (Test8_incomplete*) init24;
- (Test8_incomplete*) init25;
- (Test8_super*) init30; // id exception to covariance
- (Test8_super*) init31; // expected-note {{declaration in interface}} \
// expected-note{{overridden method}}
- (Test8_super*) init32; // expected-note{{overridden method}}
- (Test8_super*) init33;
- (Test8_super*) init34; // covariance
- (Test8_super*) init35; // expected-note{{overridden method}}
- (Test8*) init40; // id exception to covariance
- (Test8*) init41; // expected-note {{declaration in interface}} \
// expected-note{{overridden method}}
- (Test8*) init42; // expected-note{{overridden method}}
- (Test8*) init43; // this should be a warning, but that's a general language thing, not an ARC thing
- (Test8*) init44;
- (Test8*) init45; // expected-note{{overridden method}}
- (Test8_complete*) init50; // expected-error {{init methods must return a type related to the receiver type}}
- (Test8_complete*) init51; // expected-error {{init methods must return a type related to the receiver type}}
- (Test8_complete*) init52; // expected-error {{init methods must return a type related to the receiver type}}
- (Test8_complete*) init53; // expected-error {{init methods must return a type related to the receiver type}}
- (Test8_complete*) init54; // expected-error {{init methods must return a type related to the receiver type}}
- (Test8_complete*) init55; // expected-error {{init methods must return a type related to the receiver type}}
@end
@implementation Test8
- (id) init00 { return 0; }
- (id) init10 { return 0; } // expected-error {{method implementation does not match its declaration}}
- (id) init20 { return 0; }
- (id) init30 { return 0; }
- (id) init40 { return 0; }
- (id) init50 { return 0; }
- (void) init01 {} // expected-error {{method was declared as an 'init' method, but its implementation doesn't match because its result type is not an object pointer}} \
// expected-warning{{method is expected to return an instance of its class type 'Test8', but is declared to return 'void'}}
- (void) init11 {}
- (void) init21 {} // expected-error {{method was declared as an 'init' method, but its implementation doesn't match because its result type is not an object pointer}}
- (void) init31 {} // expected-error {{method was declared as an 'init' method, but its implementation doesn't match because its result type is not an object pointer}} \
// expected-warning{{method is expected to return an instance of its class type 'Test8', but is declared to return 'void'}}
- (void) init41 {} // expected-error {{method was declared as an 'init' method, but its implementation doesn't match because its result type is not an object pointer}} \
// expected-warning{{method is expected to return an instance of its class type 'Test8', but is declared to return 'void'}}
- (void) init51 {}
- (Test8_incomplete*) init02 { return 0; } // expected-error {{init methods must return a type related to the receiver type}} \
// expected-warning{{method is expected to return an instance of its class type 'Test8', but is declared to return 'Test8_incomplete *'}}
- (Test8_incomplete*) init12 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
- (Test8_incomplete*) init22 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
- (Test8_incomplete*) init32 { return 0; } // expected-error {{init methods must return a type related to the receiver type}} \
// expected-warning{{method is expected to return an instance of its class type 'Test8', but is declared to return 'Test8_incomplete *'}}
- (Test8_incomplete*) init42 { return 0; } // expected-error {{init methods must return a type related to the receiver type}} \
// expected-warning{{method is expected to return an instance of its class type 'Test8', but is declared to return 'Test8_incomplete *'}}
- (Test8_incomplete*) init52 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
- (Test8_super*) init03 { return 0; }
- (Test8_super*) init13 { return 0; } // expected-error {{method implementation does not match its declaration}}
- (Test8_super*) init23 { return 0; }
- (Test8_super*) init33 { return 0; }
- (Test8_super*) init43 { return 0; }
- (Test8_super*) init53 { return 0; }
- (Test8*) init04 { return 0; }
- (Test8*) init14 { return 0; } // expected-error {{method implementation does not match its declaration}}
- (Test8*) init24 { return 0; }
- (Test8*) init34 { return 0; }
- (Test8*) init44 { return 0; }
- (Test8*) init54 { return 0; }
- (Test8_complete*) init05 { return 0; } // expected-error {{init methods must return a type related to the receiver type}} \
// expected-warning{{method is expected to return an instance of its class type 'Test8', but is declared to return 'Test8_complete *'}}
- (Test8_complete*) init15 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
- (Test8_complete*) init25 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
- (Test8_complete*) init35 { return 0; } // expected-error {{init methods must return a type related to the receiver type}} \
// expected-warning{{method is expected to return an instance of its class type 'Test8', but is declared to return 'Test8_complete *'}}
- (Test8_complete*) init45 { return 0; } // expected-error {{init methods must return a type related to the receiver type}} \
// expected-warning{{method is expected to return an instance of its class type 'Test8', but is declared to return 'Test8_complete *'}}
- (Test8_complete*) init55 { return 0; } // expected-error {{init methods must return a type related to the receiver type}}
@end
@class Test9_incomplete;
@interface Test9
- (Test9_incomplete*) init1; // expected-error {{init methods must return a type related to the receiver type}}
- (Test9_incomplete*) init2;
@end
id test9(Test9 *v) {
return [v init1];
}
// Test that the inference rules are different for fast enumeration variables.
void test10(id collection) {
for (id x in collection) {
__strong id *ptr = &x; // expected-warning {{initializing '__strong id *' with an expression of type 'const __strong id *' discards qualifiers}}
}
for (__strong id x in collection) {
__weak id *ptr = &x; // expected-error {{initializing '__weak id *' with an expression of type '__strong id *' changes retain/release properties of pointer}}
}
}
// rdar://problem/9078626
#define nil ((void*) 0)
void test11(id op, void *vp) {
_Bool b;
b = (op == nil);
b = (nil == op);
b = (vp == nil);
b = (nil == vp);
// FIXME: Shouldn't these be consistent?
b = (vp == op); // expected-error {{implicit conversion of Objective-C pointer type 'id' to C pointer type 'void *' requires a bridged cast}} expected-note {{use __bridge}} expected-note {{use CFBridgingRetain call}}
b = (op == vp);
}
void test12(id collection) {
for (id x in collection) {
x = 0; // expected-error {{fast enumeration variables cannot be modified in ARC by default; declare the variable __strong to allow this}}
}
for (const id x in collection) { // expected-note {{variable 'x' declared const here}}
x = 0; // expected-error {{cannot assign to variable 'x' with const-qualified type 'const __strong id'}}
}
for (__strong id x in collection) {
x = 0;
}
}
@interface Test13
- (id) init0;
- (void) noninit;
@end
@implementation Test13
- (id) init0 {
self = 0;
}
- (void) noninit {
self = 0; // expected-error {{cannot assign to 'self' outside of a method in the init family}}
}
@end
// <rdar://problem/10274056>
@interface Test13_B
- (id) consumesSelf __attribute__((ns_consumes_self));
@end
@implementation Test13_B
- (id) consumesSelf {
self = 0; // no-warning
}
@end
// rdar://problem/9172151
@class Test14A, Test14B;
void test14(void) {
extern void test14_consume(id *);
extern int test14_cond(void);
extern float test14_nowriteback(id __autoreleasing const *); // expected-note{{passing argument to parameter here}}
Test14A *a;
Test14B *b;
id i;
id cla[10];
id vla[test14_cond() + 10];
test14_consume((__strong id*) &a);
test14_consume((test14_cond() ? (__strong id*) &b : &i));
test14_consume(test14_cond() ? 0 : &a);
test14_consume(test14_cond() ? (void*) 0 : (&a));
test14_consume(cla); // expected-error {{passing address of non-scalar object to __autoreleasing parameter for write-back}}
test14_consume(vla); // expected-error {{passing address of non-scalar object to __autoreleasing parameter for write-back}}
test14_consume(&cla[5]); // expected-error {{passing address of non-scalar object to __autoreleasing parameter for write-back}}
__strong id *test14_indirect(void);
test14_consume(test14_indirect()); // expected-error {{passing address of non-local object to __autoreleasing parameter for write-back}}
extern id test14_global;
test14_consume(&test14_global); // expected-error {{passing address of non-local object to __autoreleasing parameter for write-back}}
extern __strong id *test14_global_ptr;
test14_consume(test14_global_ptr); // expected-error {{passing address of non-local object to __autoreleasing parameter for write-back}}
static id static_local;
test14_consume(&static_local); // expected-error {{passing address of non-local object to __autoreleasing parameter for write-back}}
__weak id* wip;
test14_nowriteback(&static_local); // okay, not a write-back.
test14_nowriteback(wip); // expected-error{{passing '__weak id *' to parameter of type '__autoreleasing id const *' changes retain/release properties of pointer}}
}
void test15(void) {
__block __autoreleasing id x; // expected-error {{__block variables cannot have __autoreleasing ownership}}
}
struct Test16;
@interface Test16a
- (void) test16_0: (int) x;
- (int) test16_1: (int) x; // expected-note {{one possibility}}
- (int) test16_2: (int) x; // expected-note {{one possibility}}
- (id) test16_3: (int) x __attribute__((ns_returns_retained)); // expected-note {{one possibility}}
- (void) test16_4: (int) x __attribute__((ns_consumes_self)); // expected-note {{one possibility}}
- (void) test16_5: (id) __attribute__((ns_consumed)) x; // expected-note {{one possibility}}
- (void) test16_6: (id) x;
@end
@interface Test16b
- (void) test16_0: (int) x;
- (int) test16_1: (char*) x; // expected-note {{also found}}
- (char*) test16_2: (int) x; // expected-note {{also found}}
- (id) test16_3: (int) x; // expected-note {{also found}}
- (void) test16_4: (int) x; // expected-note {{also found}}
- (void) test16_5: (id) x; // expected-note {{also found}}
- (void) test16_6: (struct Test16 *) x;
@end
void test16(void) {
id v;
[v test16_0: 0];
[v test16_1: 0]; // expected-error {{multiple methods named 'test16_1:' found with mismatched result, parameter type or attributes}}
[v test16_2: 0]; // expected-error {{multiple methods named}}
[v test16_3: 0]; // expected-error {{multiple methods named}}
[v test16_4: 0]; // expected-error {{multiple methods named}}
[v test16_5: 0]; // expected-error {{multiple methods named}}
[v test16_6: 0];
}
@class Test17; // expected-note 3{{forward declaration of class here}}
@protocol Test17p
- (void) test17;
+ (void) test17;
@end
void test17(void) {
Test17 *v0;
[v0 test17]; // expected-error {{receiver type 'Test17' for instance message is a forward declaration}}
Test17<Test17p> *v1;
[v1 test17]; // expected-error {{receiver type 'Test17<Test17p>' for instance message is a forward declaration}}
[Test17 test17]; // expected-error {{receiver 'Test17' for class message is a forward declaration}}
}
void test18(void) {
id x;
[x test18]; // expected-error {{instance method 'test18' not found ; did you mean 'test17'?}}
}
extern struct Test19 *test19a;
struct Test19 *const test19b = 0;
void test19(void) {
id x;
x = (id) test19a; // expected-error {{bridged cast}} \
// expected-note{{use __bridge to convert directly (no change in ownership)}} \
// expected-note{{use CFBridgingRelease call to transfer ownership of a +1 'struct Test19 *' into ARC}}
x = (id) test19b; // expected-error {{bridged cast}} \
// expected-note{{use __bridge to convert directly (no change in ownership)}} \
// expected-note{{use CFBridgingRelease call to transfer ownership of a +1 'struct Test19 *' into ARC}}
}
// rdar://problem/8951453
static __thread id test20_implicit; // expected-error {{thread-local variable has non-trivial ownership: type is '__strong id'}}
static __thread __strong id test20_strong; // expected-error {{thread-local variable has non-trivial ownership: type is '__strong id'}}
static __thread __weak id test20_weak; // expected-error {{thread-local variable has non-trivial ownership: type is '__weak id'}}
static __thread __autoreleasing id test20_autoreleasing; // expected-error {{thread-local variable has non-trivial ownership: type is '__autoreleasing id'}} expected-error {{global variables cannot have __autoreleasing ownership}}
static __thread __unsafe_unretained id test20_unsafe;
void test20(void) {
static __thread id test20_implicit; // expected-error {{thread-local variable has non-trivial ownership: type is '__strong id'}}
static __thread __strong id test20_strong; // expected-error {{thread-local variable has non-trivial ownership: type is '__strong id'}}
static __thread __weak id test20_weak; // expected-error {{thread-local variable has non-trivial ownership: type is '__weak id'}}
static __thread __autoreleasing id test20_autoreleasing; // expected-error {{thread-local variable has non-trivial ownership: type is '__autoreleasing id'}} expected-error {{global variables cannot have __autoreleasing ownership}}
static __thread __unsafe_unretained id test20_unsafe;
}
// rdar://9310049
_Bool fn(id obj) {
return (_Bool)obj;
}
// Check casting w/ ownership qualifiers.
void test21(void) {
__strong id *sip;
(void)(__weak id *)sip; // expected-error{{casting '__strong id *' to type '__weak id *' changes retain/release properties of pointer}}
(void)(__weak const id *)sip; // expected-error{{casting '__strong id *' to type '__weak id const *' changes retain/release properties of pointer}}
(void)(__autoreleasing id *)sip; // expected-error{{casting '__strong id *' to type '__autoreleasing id *' changes retain/release properties of pointer}}
(void)(__autoreleasing const id *)sip; // okay
}
// rdar://problem/9340462
void test22(id x[]) { // expected-error {{must explicitly describe intended ownership of an object array parameter}}
}
// rdar://problem/9400219
void test23(void) {
void *ptr;
ptr = @"foo";
ptr = (ptr ? @"foo" : 0);
ptr = (ptr ? @"foo" : @"bar");
}
id test24(void) {
extern void test24_helper(void);
return test24_helper(), (void*) 0;
}
// rdar://9400841
@interface Base
@property (assign) id content;
@end
@interface Foo : Base
-(void)test;
@end
@implementation Foo
-(void)test {
super.content = 0;
}
@end
// <rdar://problem/9398437>
void test25(Class *classes) {
Class *other_classes;
test25(other_classes);
}
void test26(id y) {
extern id test26_var1;
__sync_swap(&test26_var1, 0, y); // expected-error {{cannot perform atomic operation on a pointer to type '__strong id': type has non-trivial ownership}}
extern __unsafe_unretained id test26_var2;
__sync_swap(&test26_var2, 0, y);
}
@interface Test26
- (id) init;
- (id) initWithInt: (int) x;
@end
@implementation Test26
- (id) init { return self; }
- (id) initWithInt: (int) x {
[self init]; // expected-error {{the result of a delegate init call must be immediately returned or assigned to 'self'}}
return self;
}
@end
// rdar://9525555
@interface Test27 {
__weak id _myProp1;
id myProp2;
}
@property id x;
@property (readonly) id ro;
@property (readonly) id custom_ro;
@property int y;
@property (readonly) __weak id myProp1;
@property (readonly) id myProp2;
@property (readonly) __strong id myProp3;
@end
@implementation Test27
@synthesize x;
@synthesize ro;
@synthesize y;
@synthesize myProp1 = _myProp1;
@synthesize myProp2;
@synthesize myProp3;
-(id)custom_ro { return 0; }
@end
// rdar://9569264
@interface Test28
@property (nonatomic, assign) __strong id a; // expected-error {{unsafe_unretained property 'a' may not also be declared __strong}}
@end
@interface Test28 ()
@property (nonatomic, assign) __strong id b; // expected-error {{unsafe_unretained property 'b' may not also be declared __strong}}
@end
@implementation Test28
@synthesize a;
@synthesize b;
@end
// rdar://9573962
typedef struct Bark Bark;
@interface Test29
@property Bark* P;
@end
@implementation Test29
@synthesize P;
- (id)Meth {
Bark** f = &P;
return 0;
}
@end
// rdar://9495837
@interface Test30
+ (id) new;
- (void)Meth;
@end
@implementation Test30
+ (id) new { return 0; }
- (void) Meth {
__weak id x = [Test30 new]; // expected-warning {{assigning retained object to weak variable}}
id __unsafe_unretained u = [Test30 new]; // expected-warning {{assigning retained object to unsafe_unretained variable}}
id y = [Test30 new];
x = [Test30 new]; // expected-warning {{assigning retained object to weak variable}}
u = [Test30 new]; // expected-warning {{assigning retained object to unsafe_unretained variable}}
y = [Test30 new];
}
@end
// rdar://9411838
@protocol PTest31 @end
int Test31(void) {
Class cls;
id ids;
id<PTest31> pids;
Class<PTest31> pcls;
int i = (ids->isa ? 1 : 0); // expected-error {{member reference base type 'id' is not a structure or union}}
int j = (pids->isa ? 1 : 0); // expected-error {{member reference base type 'id<PTest31>' is not a structure or union}}
int k = (pcls->isa ? i : j); // expected-error {{member reference base type 'Class<PTest31>' is not a structure or union}}
return cls->isa ? i : j; // expected-error {{member reference base type 'Class' is not a structure or union}}
}
// rdar://9612030
@interface ITest32 {
@public
id ivar;
}
@end
id Test32(__weak ITest32 *x) {
__weak ITest32 *y;
x->ivar = 0; // expected-error {{dereferencing a __weak pointer is not allowed}}
return y ? y->ivar // expected-error {{dereferencing a __weak pointer is not allowed}}
: (*x).ivar; // expected-error {{dereferencing a __weak pointer is not allowed}}
}
// rdar://9619861
extern int printf(const char*, ...);
typedef long intptr_t;
int Test33(id someid) {
printf( "Hello%ld", (intptr_t)someid);
return (int)someid;
}
// rdar://9636091
@interface I34
@property (nonatomic, retain) id newName __attribute__((ns_returns_not_retained)) ;
@property (nonatomic, retain) id newName1 __attribute__((ns_returns_not_retained)) ;
- (id) newName1 __attribute__((ns_returns_not_retained));
@property (nonatomic, retain) id newName2 __attribute__((ns_returns_not_retained)); // expected-note {{roperty declared here}}
- (id) newName2; // expected-warning {{property declared as returning non-retained objects; getter returning retained objects}}
@end
@implementation I34
@synthesize newName;
@synthesize newName1;
- (id) newName1 { return 0; }
@synthesize newName2;
@end
void test35(void) {
extern void test36_helper(id*);
id x;
__strong id *xp = 0;
test36_helper(&x);
test36_helper(xp); // expected-error {{passing address of non-local object to __autoreleasing parameter for write-back}}
// rdar://problem/9665710
__block id y;
test36_helper(&y);
^{ test36_helper(&y); }();
__strong int non_objc_type; // expected-warning {{'__strong' only applies to Objective-C object or block pointer types}}
}
void test36(int first, ...) {
// <rdar://problem/9758798>
__builtin_va_list arglist;
__builtin_va_start(arglist, first);
id obj = __builtin_va_arg(arglist, id);
__builtin_va_end(arglist);
}
@class Test37; // expected-note{{forward declaration of class here}}
void test37(Test37 *c) {
for (id y in c) { // expected-error {{collection expression type 'Test37' is a forward declaration}}
(void) y;
}
(void)sizeof(id*); // no error.
}
// rdar://problem/9887979
@interface Test38
@property int value;
@end
void test38(void) {
extern Test38 *test38_helper(void);
switch (test38_helper().value) {
case 0:
case 1:
;
}
}
// rdar://10186536
@class NSColor;
void _NSCalc(NSColor* color, NSColor* bezelColors[]) __attribute__((unavailable("not available in automatic reference counting mode")));
void _NSCalcBeze(NSColor* color, NSColor* bezelColors[]); // expected-error {{must explicitly describe intended ownership of an object array parameter}}
// rdar://9970739
@interface RestaurantTableViewCell
- (void) restaurantLocation;
@end
@interface Radar9970739
- (void) Meth;
@end
@implementation Radar9970739
- (void) Meth {
RestaurantTableViewCell *cell;
[cell restaurantLocatoin]; // expected-error {{no visible @interface for 'RestaurantTableViewCell' declares the selector 'restaurantLocatoin'}}
}
@end
// rdar://11814185
@interface Radar11814185
@property (nonatomic, weak) Radar11814185* picker1;
+ alloc;
- init;
@end
@implementation Radar11814185
@synthesize picker1;
- (void)viewDidLoad
{
picker1 = [[Radar11814185 alloc] init]; // expected-warning {{assigning retained object to weak variable; object will be released after assignment}}
self.picker1 = [[Radar11814185 alloc] init]; // expected-warning {{assigning retained object to weak property; object will be released after assignment}}
}
+ alloc { return 0; }
- init { return 0; }
@end
// <rdar://problem/12569201>. Warn on cases of initializing a weak variable
// with an Objective-C object literal.
void rdar12569201(id key, id value) {
// Declarations.
__weak id x = @"foo"; // no-warning
__weak id y = @{ key : value }; // expected-warning {{assigning dictionary literal to a weak variable; object will be released after assignment}}
__weak id z = @[ value ]; // expected-warning {{assigning array literal to a weak variable; object will be released after assignment}}
__weak id b = ^() {}; // expected-warning {{assigning block literal to a weak variable; object will be released after assignment}}
__weak id n = @42; // expected-warning {{assigning numeric literal to a weak variable; object will be released after assignment}}
__weak id e = @(42); // expected-warning {{assigning numeric literal to a weak variable; object will be released after assignment}}
__weak id m = @(41 + 1); // expected-warning {{assigning boxed expression to a weak variable; object will be released after assignment}}
// Assignments.
y = @{ key : value }; // expected-warning {{assigning dictionary literal to a weak variable; object will be released after assignment}}
z = @[ value ]; // expected-warning {{assigning array literal to a weak variable; object will be released after assignment}}
b = ^() {}; // expected-warning {{assigning block literal to a weak variable; object will be released after assignment}}
n = @42; // expected-warning {{assigning numeric literal to a weak variable; object will be released after assignment}}
e = @(42); // expected-warning {{assigning numeric literal to a weak variable; object will be released after assignment}}
m = @(41 + 1); // expected-warning {{assigning boxed expression to a weak variable; object will be released after assignment}}
}
@interface C
- (void)method:(id[])objects; // expected-error{{must explicitly describe intended ownership of an object array parameter}}
@end
// rdar://13752880
@interface NSMutableArray : NSArray @end
typedef __strong NSMutableArray * PSNS;
void test(NSArray *x) {
NSMutableArray *y = x; // expected-warning {{incompatible pointer types initializing 'NSMutableArray *' with an expression of type 'NSArray *'}}
__strong NSMutableArray *y1 = x; // expected-warning {{incompatible pointer types initializing 'NSMutableArray *' with an expression of type 'NSArray *'}}
PSNS y2 = x; // expected-warning {{incompatible pointer types initializing 'NSMutableArray *' with an expression of type 'NSArray *'}}
}
// rdar://15123684
@class NSString;
void foo(NSArray *array) {
for (NSString *string in array) {
for (string in @[@"blah", @"more blah", string]) { // expected-error {{selector element of type 'NSString *const __strong' cannot be a constant lvalue}}
}
}
}
// rdar://16627903
extern void abort(void);
#define TKAssertEqual(a, b) do{\
__typeof(a) a_res = (a);\
__typeof(b) b_res = (b);\
if ((a_res) != (b_res)) {\
abort();\
}\
}while(0)
int garf(void) {
id object;
TKAssertEqual(object, nil);
TKAssertEqual(object, (id)nil);
}
void block_capture_autoreleasing(A * __autoreleasing *a,
A **b, // expected-note {{declare the parameter __strong or capture a __block __strong variable to keep values alive across autorelease pools}}
A * _Nullable *c, // expected-note {{declare the parameter __strong or capture a __block __strong variable to keep values alive across autorelease pools}}
A * _Nullable __autoreleasing *d,
A ** _Nullable e, // expected-note {{declare the parameter __strong or capture a __block __strong variable to keep values alive across autorelease pools}}
A * __autoreleasing * _Nullable f,
id __autoreleasing *g,
id *h, // expected-note {{declare the parameter __strong or capture a __block __strong variable to keep values alive across autorelease pools}}
id _Nullable *i, // expected-note {{declare the parameter __strong or capture a __block __strong variable to keep values alive across autorelease pools}}
id _Nullable __autoreleasing *j,
id * _Nullable k, // expected-note {{declare the parameter __strong or capture a __block __strong variable to keep values alive across autorelease pools}}
id __autoreleasing * _Nullable l) {
^{
(void)*a;
(void)*b; // expected-warning {{block captures an autoreleasing out-parameter, which may result in use-after-free bugs}}
(void)*c; // expected-warning {{block captures an autoreleasing out-parameter, which may result in use-after-free bugs}}
(void)*d;
(void)*e; // expected-warning {{block captures an autoreleasing out-parameter, which may result in use-after-free bugs}}
(void)*f;
(void)*g;
(void)*h; // expected-warning {{block captures an autoreleasing out-parameter, which may result in use-after-free bugs}}
(void)*i; // expected-warning {{block captures an autoreleasing out-parameter, which may result in use-after-free bugs}}
(void)*j;
(void)*k; // expected-warning {{block captures an autoreleasing out-parameter, which may result in use-after-free bugs}}
(void)*l;
}();
}
void test_vla_fold_keeps_strong(void) {
const unsigned bounds = 1;
static id array[bounds]; // expected-warning {{variable length array folded to constant array as an extension}}
typedef __typeof__(array) array_type;
typedef id __strong array_type[1];
static id weak_array[bounds] __weak; // expected-warning {{variable length array folded to constant array as an extension}}
typedef __typeof__(weak_array) weak_array_type;
typedef id __weak weak_array_type[1];
}