Open Radar

 
Summary:
I was writing a binary search in Swift without looking at a reference, to see how well the new interactive environment works.

Steps to Reproduce:
1. Open Xcode
2. File -> New -> File
3. Playground
4. Replace code with the following:



func binarySearch(needle: Int, haystack: Int[]) -> Int? {
    func inner(low: Int, high: Int) -> Int? {
        if low > high {
            return nil
        }

        let index = (high + low) / 2
        let guess = haystack[index]
        if guess == needle {
            return index
        }
        else if (needle > guess) {
            return inner(low, index-1)
        }
        else {
            return inner(index+1, high)
        }
    }
    return inner(0, haystack.count - 1)
}

/*
binarySearch(0, [1, 2, 3, 4, 5])
binarySearch(1, [1, 2, 3, 4, 5])
binarySearch(2, [1, 2, 3, 4, 5])
binarySearch(3, [1, 2, 3, 4, 5])
binarySearch(4, [1, 2, 3, 4, 5])
binarySearch(5, [1, 2, 3, 4, 5])
binarySearch(6, [1, 2, 3, 4, 5])
binarySearch(-100, [1, 2, 3, 4, 5])
binarySearch(100, [1, 2, 3, 4, 5])
*/


Expected Results:
Xcode doesn't crash :)

Actual Results:
Xcode crashes, and the code that was pasted in is was not saved (it reverts to the default Playground template code)

Version:
Xcode 6 beta 1 (Version 6.0 (6A215l))
OS X Mavericks 10.9.3

Notes:


Configuration:
Late 2013 retina MBP 13"

Attachments: