Open Radar

 
This is a duplicate of rdar://17154140

var range = -1...1

var reversedRange = ReverseRange(range: range)

var createdAsReverse = 1...(-1)

for i in reversedRange {
    println(i)
}
//prints 1, 0, 0, -1

for i in createdAsReverse {
    println(i)
}
//prints 1, 2, 3.... in an infinite loop

One would except that the two ranges created in this way to behave similarly. 

Additionally there is no way to create a range where the end of the range is less than the beginning. One would expect that the 1...-1 would either work the same as reversing 1...-1, or to trap when trying to create a range where the end is less than the beginning.