| // RUN: %target-run-simple-swift | %FileCheck %s |
| // REQUIRES: executable_test |
| |
| // REQUIRES: objc_interop |
| |
| import Foundation |
| |
| class Canary: NSObject { |
| deinit { |
| print("died") |
| } |
| } |
| |
| var CanaryAssocObjectHandle: UInt8 = 0 |
| |
| |
| // Attach an associated object with a loud deinit so we can see that the |
| // object died. |
| func hangCanary(_ o: AnyObject) { |
| objc_setAssociatedObject(o, &CanaryAssocObjectHandle, Canary(), |
| .OBJC_ASSOCIATION_RETAIN_NONATOMIC) |
| } |
| |
| // CHECK-LABEL: NSData: |
| print("NSData:") |
| autoreleasepool { |
| var bytes: UnsafeMutablePointer<UInt8> |
| repeat { |
| let data = NSData(bytes: [2, 3, 5, 7] as [UInt8], length: 4) |
| hangCanary(data) |
| bytes = UnsafeMutablePointer<UInt8>(mutating: data.bytes.assumingMemoryBound(to: UInt8.self)) |
| } while false // CHECK-NOT: died |
| print(bytes[0]) // CHECK: 2 |
| print(bytes[1]) // CHECK-NEXT: 3 |
| print(bytes[2]) // CHECK-NEXT: 5 |
| print(bytes[3]) // CHECK-NEXT: 7 |
| } // CHECK-NEXT: died |
| |
| // CHECK-LABEL: AnyObject: |
| print("AnyObject:") |
| autoreleasepool { |
| var bytes: UnsafeMutablePointer<UInt8> |
| repeat { |
| let data = NSData(bytes: [11, 13, 17, 19] as [UInt8], length: 4) |
| hangCanary(data) |
| let dataAsAny: AnyObject = data |
| bytes = UnsafeMutablePointer<UInt8>(mutating: dataAsAny.bytes!.assumingMemoryBound(to: UInt8.self)) |
| } while false // CHECK-NOT: died |
| print(bytes[0]) // CHECK: 11 |
| print(bytes[1]) // CHECK-NEXT: 13 |
| print(bytes[2]) // CHECK-NEXT: 17 |
| print(bytes[3]) // CHECK-NEXT: 19 |
| } // CHECK-NEXT: died |