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infer_clone/infer/documentation/issues/STRONG_SELF_NOT_CHECKED.md

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When a block captures weakSelf in the following pattern:

__weak __typeof(self) weakSelf = self;
  int (^my_block)() = ^() {
    __strong __typeof(weakSelf) strongSelf = weakSelf;
    int y = strongSelf->x;

the variable strongSelf should be checked for null before being used, otherwise this could cause a crash because the weak pointer weakSelf could be null.