Nested blocks and references to self

Question

I have a block wherein I use self so I declare a weak reference to self:

__weak MyClass *weakSelf = self;

Now my questions:

1. I get an error where I define weakSelf and I don't understand what this should mean.:

   weak attribute can not be specified on an automatic variable

2. Inside my block I pass weakSelf to another block and I am not sure if I now have to do the same thing again like so:

   __weak MyClass *weakWeakSelf = weakSelf;
   

   And then pass weakWeakSelf to that block?

Answer 1

This is most likely occurring as you are targeting down to iOS 4. You should change it to be

__unsafe_unretained MyClass *weakWeakSelf = weakSelf;

Answer 2

With ARC

__weak __typeof__(self) wself = self;

Wihtout ARC

__unsafe_unretained __typeof__(self) wself = self;