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objc_AssociationPolicy is now a proper enum, but the official build of Swift doesn't use those SDKs yet. Accomodate those of us who are with a hack (and filed rdar://problem/19494514 to remove it). Swift SVN r24470
57 lines
1.5 KiB
Swift
57 lines
1.5 KiB
Swift
// RUN: %target-run-simple-swift | FileCheck %s
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import Foundation
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class Canary: NSObject {
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deinit {
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println("died")
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}
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}
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var CanaryAssocObjectHandle: UInt8 = 0
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// Hack to build with both older and newer SDKs.
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// rdar://problem/19494514
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extension UInt {
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static let OBJC_ASSOCIATION_RETAIN_NONATOMIC: UInt = 1
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}
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// Attach an associated object with a loud deinit so we can see that the
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// object died.
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func hangCanary(o: AnyObject) {
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objc_setAssociatedObject(o, &CanaryAssocObjectHandle, Canary(),
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.OBJC_ASSOCIATION_RETAIN_NONATOMIC)
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}
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// CHECK-LABEL: NSData:
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println("NSData:")
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autoreleasepool {
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var bytes: UnsafeMutablePointer<UInt8>
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do {
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let data = NSData(bytes: [2, 3, 5, 7] as [UInt8], length: 4)
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hangCanary(data)
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bytes = UnsafeMutablePointer<UInt8>(data.bytes)
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} while false // CHECK-NOT: died
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println(bytes[0]) // CHECK: 2
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println(bytes[1]) // CHECK-NEXT: 3
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println(bytes[2]) // CHECK-NEXT: 5
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println(bytes[3]) // CHECK-NEXT: 7
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} // CHECK-NEXT: died
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// CHECK-LABEL: AnyObject:
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println("AnyObject:")
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autoreleasepool {
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var bytes: UnsafeMutablePointer<UInt8>
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do {
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let data = NSData(bytes: [11, 13, 17, 19] as [UInt8], length: 4)
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hangCanary(data)
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let dataAsAny: AnyObject = data
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bytes = UnsafeMutablePointer<UInt8>(dataAsAny.bytes!)
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} while false // CHECK-NOT: died
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println(bytes[0]) // CHECK: 11
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println(bytes[1]) // CHECK-NEXT: 13
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println(bytes[2]) // CHECK-NEXT: 17
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println(bytes[3]) // CHECK-NEXT: 19
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} // CHECK-NEXT: died
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