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: 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 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?

Accepted Answer

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

```
__unsafe_unretained MyClass *weakWeakSelf = weakSelf;
```

Nested blocks and references to self

Solution

Problem