Zombie CADisplayLink?

Is it possible开发者_StackOverflow社区 that a CADisplayLink gets called one or two more times even after being invalidated?

It looks that way to me, and this is causing me a problem because the target object is called where it's already gone so it crashes.

Thanks!

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According to the docs, "The newly constructed display link retains the target." so it shouldn't crash in any case.

EDIT: Try setting the environment variables NSZombieEnabled=YES and NSDeallocateZombies=NO (the latter is the default, apparently), which may help debug the crash.