Open Radar

 
24-Oct-2012 04:56 PM Heath Borders:
Summary:
If a class C and protocol P both define a property Q, and class D, which is a subclass of C, has a category E that makes D conform to P, clang warns that Q's implementation is missing, while it has been implemented by C.

Steps to Reproduce:

@interface C

@property Q

@end

@protocol P

@property Q

@end

@interface D : C

@end

@interface D(E)<P>

@end

@implementation D(E) // clang will warn that D(E) has no implementation of getP, setP:.

@end

Build and run the attached project, observe the warnings.

Expected Results:

There should be no warnings.

Actual Results:

These warnings exist:

HBClass+HBCategory.m:11:17: Property 'myProperty' requires method 'myProperty' to be defined - use @dynamic or provide a method implementation in this category

HBClass+HBCategory.m:11:17: Property 'myProperty' requires method 'setMyProperty:' to be defined - use @dynamic or provide a method implementation in this category

Regression:

I can workaround this by providing @dynamic myProperty.

Notes:


24-Oct-2012 04:56 PM Heath Borders:
'ClangMissesSuperclassPropertyForProtocol.zip' was successfully uploaded