duplicates:

• SR-479 Weak properties in protocols not checked in concrete classes

Issue Description:

The following code compiles and gives no warning.

protocol TestProtocol: class {
    weak var weakView: UIView? {get set}
}

class TestSwiftClass: TestProtocol {
    var weakView: UIView?
}

But I believe that you should be forced to have weak property in TestSwiftClass.
For example in ObjC following code gives a warning: " retain (or strong)' attribute on property 'view' does not match the property inherited from 'TestObjcProtocol' "

@protocol TestObjcProtocol <NSObject>

@property (weak,nonatomic,nullable) UIView *view;

@end

@interface TestObject : NSObject <TestObjcProtocol>

@property (nonatomic,nullable) UIView *view;

@end