The root cause of "KVO blocks API causing KVO crashes on object dealloc"

[peiyun007]

I came across the same problem as https://github.com/pandamonia/BlocksKit/issues/200.
PS:I run my simulator in ios 7
Finally,I found the root cause of this problem.Below is the cause:

• (NSMapTable *)bk_observersMapTable this method will be called only one time every time you start the app.So BlocksKit will swizzle the dealloc method of instances for the first class,for example ABCViewController.For the other class,BlocksKit will not swizzle the dealloc method any more.So it will lead to leak even crash.You can create a breakpoint in the bk_observersMapTable to find the root cause.

[peiyun007]

I'm sorry,i was wrong.