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When compiling an older project in Xcode 4.5, there is a warning:
‘__bridge’ casts have no effect when not using ARC
What’s the proper way to get rid of this warning, such that the code works well in both ARC and non-ARC projects?
Any individual source file has to either be compiled with ARC or not compiled with ARC. You should just make up your mind which it is and always use that method for the particular source file. Provided you stick to the memory management naming conventions, you can mix ARC and non ARC source files in the same project.
The reason I say the above, is that if you have code that was written for ARC and you compile it without ARC, there will be memory leaks and premature deallocations all over the place thanks to the fact that all of the retains, releases and autoreleases are missing.