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6c07fb4ad1
The syntax being reverted added busywork and noise to the common case where you want to say "I have the right address, but the wrong type," without adding any real safety. Also it eliminated the ability to write UnsafePointer<T>(otherPointer), without adding ".self" to T. Overall, it was not a win. This reverts commits r21324 and r21342 Swift SVN r21424
49 lines
1.4 KiB
Swift
49 lines
1.4 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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// 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_AssociationPolicy(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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