What is this statement actually doing?

static void *AVPlayerDemoPlaybackViewControllerRateObservationContext = &
AVPlayerDemoPlaybackViewControllerRateObservationContext;

Isn't the right side evaluated first? But it doesn't yet exist? It compiles
... but seems to be a recursive definition??

http://developer.apple.com/library/ios/#samplecode/AVPlayerDemo/Listings/Classes_AVPlayerDemoPlaybackViewController_m.html#//apple_ref/doc/uid/DTS40010101-Classes_AVPlayerDemoPlaybackViewController_m-DontLinkElementID_8

Thanks,
-Luther
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