Categories in Objective-C aren't working

Question

I\'m developing an iOS application that needs to deploy to iOS 3.1.3. I need to extend some of the functionality of the NSData class and am using the following code inside N

Answer 1

I had the same issue with ARC project which was linking with non-ARC module having category extension.

Fixed the issue by adding "Other Linker Flags: -all_load" in parent ARC project.