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//===--- checked_cast_test.swift ------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2018 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
// RUN: %target-run-simple-swift
// REQUIRES: executable_test
// Test that we emit proper ARC here and do not crash.
private class Foo {
init() {}
}
final private class Bar : Foo {
}
final private class Baz : Foo {
}
private func checked_cast_default(_ f: Foo) -> Int {
switch f {
case is Bar:
return 0
case is Baz:
return 1
default:
return 2
}
}
private func checked_cast_exhaustive(_ f: Foo) -> Int {
switch f {
case is Bar:
return 0
case is Baz:
return 1
case is Foo:
return 2
}
}
func main() {
let b = Baz()
let x = checked_cast_default(b)
precondition(x == 1)
let y = checked_cast_exhaustive(b)
precondition(y == 1)
}
main()
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