[swift-users] UnsafeMutablePointer<String> vs. UnsafeMutablePointer<Int>

[Adrian Zubarev]

I played around with UnsafeMutablePointer and realized one behavior:

let pString = UnsafeMutablePointer<String>.alloc(1)
pString.initialize("test")
pString.predecessor().memory // will crash ax expected
pString.predecessor() == pString.advancedBy(-1) // true
pString.destroy()
pString.dealloc(1)
where

let iInt = UnsafeMutablePointer<String>.alloc(1)
iInt.initialize("test")
iInt.predecessor().memory // will not crash
iInt.predecessor() == iInt.advancedBy(-1) // true
iInt.predecessor().memory = 42 // did I just modified some memory I don't own?
iInt.destroy()
iInt.dealloc(1)
Is this intended? This is really the case where its unsafe.



-- 
Adrian Zubarev
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