is duplicated by:

• SR-5425 Data slices do not convert to String properly

Issue Description:

If a Data slice is constructed using a partial range, and that slice is converted to an NSData, that NSData will crash the next time it is printed.

import Foundation

let data = "FooBar".data(using: .ascii)!
let slice = data[3...]

let nsSlice = slice as NSData
print(nsSlice) // terminated due to signal: SEGMENTATION FAULT (11)

If the slice is constructed using 3..<6 instead of 3... , then this works.