Xcode 6.0.1分段错误11

Question

I cannot build my project due to an error(Segmentation Fault 11). With commenting things out, I found that the error is thrown by this line:

typealias functionType = ([Expression], [String: NSNumber], inout AnyObject) -> Expression!;

If I remove the typealias and use the raw type instead, the error gets still thrown, so the mistake is probably not the typealias, but the closure.

Edit:
If I replace the type Expression with AnyObject the error gets still thrown. But if I just declare the typealias, I can use it for a global variable but not for a member variable.

Answer 1

I also got this error (following an online tutorial), I removed all the code I entered before to get this error and the problem persist, it seems to me as the project was corrupted. I'm not an expert so please take this report with caution.

This is happened just after appeared an error HUD telling sourceKitService Crashed...

The probably offending code was this one:

---

         override func viewWillAppear(animated: Bool) {
     if var storedtoDoItems: AnyObject! = NSUserDefaults.standardUserDefaults().objectForKey("toDoItems") {

        toDoItems = []
         for var i = 0; i < storedtoDoItems.count; ++i {
             toDoItems.append(storedtoDoItems[i] as NSString)
          }
         println(storedtoDoItems)
    }

     taskTable.reloadData()
 }

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