Assigning an existing CGColor to a CGColor property works in iOS Simulator, not iOS device. Why?

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Because of ARC the color is released too early in the end of the method.

i use: CGColorRetain

CGColorRef whiteColor = CGColorRetain([UIColor colorWithRed:1.0 green:1.0
                                         blue:1.0 alpha:1.0].CGColor);

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