Xcode 调试 Cannot create __weak reference in file using manual reference counting

如题
升级了Xcode工具 ，发现出现这个error
Cannot create __weak reference in file using manual reference counting
修改方法


 

Set Build Settings -> Apple LLVM 8.0 - Language - Objective C -> Weak References in Manual Retain Release to YES.

默认是NO，修改成YES

 




 

 


方法来源：http://stackoverflow.com/questions/36147625/xcode-7-3-cannot-create-weak-reference-in-file-using-manual-reference-counting