llvm/clang/test/SemaObjC/arc-property.m

// RUN: %clang_cc1 -triple x86_64-apple-darwin11 -fobjc-runtime-has-weak -fsyntax-only -fobjc-arc -fblocks -fobjc-exceptions -verify -Wno-objc-root-class %s

@interface MyClass {
        id __weak myString; // expected-error {{existing instance variable 'myString' for strong property 'myString' may not be __weak}}
        id StrongIvar;
        id __weak myString2; // expected-error {{existing instance variable 'myString2' for strong property 'myString2' may not be __weak}}
        id __weak myString3;
        id StrongIvar5; // expected-error {{existing instance variable 'StrongIvar5' for __weak property 'myString5' must be __weak}}
}
@property (strong) id myString; // expected-note {{property declared here}}
@property (strong) id myString1;
@property (retain) id myString2; // expected-note {{property declared here}}
//
@property (weak) id myString3;
@property (weak) id myString4;
@property __weak id myString5; // expected-note {{property declared here}}
@end

@implementation MyClass
@synthesize myString; // expected-note {{property synthesized here}}
@synthesize myString1 = StrongIvar; // OK
@synthesize myString2 = myString2; // expected-note {{property synthesized here}}
//
@synthesize myString3; // OK
@synthesize myString4; // OK
@synthesize myString5 = StrongIvar5; // expected-note {{property synthesized here}}

@end

@interface Foo {
@public
    id __unsafe_unretained x; // expected-error {{existing instance variable 'x' for __weak property 'x' must be __weak}}
    id __strong y;  // expected-error {{existing instance variable 'y' for __weak property 'y' must be __weak}}
    id __autoreleasing z; // expected-error {{instance variables cannot have __autoreleasing ownership}}
}
@property(weak) id x; // expected-note {{property declared here}}
@property(weak) id y; // expected-note {{property declared here}}
@property(weak) id z;
@end

@implementation Foo
@synthesize x; // expected-note {{property synthesized here}}
@synthesize y; // expected-note {{property synthesized here}}
@synthesize z;  // suppressed
@end

// Don't crash.
@interface Test2
// Minor FIXME: kill the redundant error
@property (strong) UndeclaredClass *test2;  // expected-error {{unknown type name 'UndeclaredClass'}} expected-error {{must be of object type}}
@end
@implementation Test2
@synthesize test2;
@end

@interface Test3
@property (strong) id exception;
@end
void test3(Test3 *t3) {
  @throw t3.exception;
}