Open Radar

 
% xcrun clang --version
Apple clang version 4.0 (tags/Apple/clang-421.10.48) (based on LLVM 3.1svn)
Target: x86_64-apple-darwin12.0.0
Thread model: posix

% xcrun clang -fobjc-arc -c -Wsuper-class-method-mismatch mismatch.m
mismatch.m:15:31: warning: method parameter type 'NSString *__strong' does not match super
      class method parameter type 'NSString *' [-Wsuper-class-method-mismatch]
- (void)setThingy:(NSString *)val
                              ^
mismatch.m:4:33: note: previous declaration is here
@property (nonatomic) NSString *thingy;
                                ^
1 warning generated.



// mismatch.m

#import <Foundation/Foundation.h>

@interface Super : NSObject
@property (nonatomic) NSString *thingy;
@end

@implementation Super
@end


@interface Sub : Super
@end

@implementation Sub
- (void)setThingy:(NSString *)val
{
	[super setThingy:val];
}
@end



13-Aug-2012 03:30 PM Apple Developer Bug Reporting Team :
Engineering has provided the following information:

We believe this issue has been addressed in Xcode 4.5 Developer Preview 4.  Please verify with this release, and update your bug report with the results.  


13-Aug-2012 03:53 PM Jonathon Mah:
This issue has been verified as resolved and can be closed.

Btw, I _love_ being able to Google the Radar number and see the associated commits (and test cases) in the Clang and LLVM projects. Thanks!