[swift-evolution] Warning for possible overflow or optional

[Stéphane Lizeray]

Hello,


Don’t you think that the compiler should emit a warning for a possible overflow in the following code?


func foo(x:UInt16) {

	let y = Int16(x)		<— Shouldn’t we have a warning here? Or an optional?
	print(y)
}

This code is very very fragile and Swift is supposed to bring safety?


Thanks,


Stéphane



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