The AVCam sample code by Apple fails to build in Swift 6 language settings due to failed concurrency checks ((the only modification to make in that code is to append @preconcurrency to import AVFoundation).
Here is a minimally reproducible sample code for one of the errors:
import Foundation
final class Recorder {
var writer = Writer()
var isRecording = false
func startRecording() {
Task { [writer] in
await writer.startRecording()
print("started recording")
}
}
func stopRecording() {
Task { [writer] in
await writer.stopRecording()
print("stopped recording")
}
}
func observeValues() {
Task {
for await value in await writer.$isRecording.values {
isRecording = value
}
}
}
}
actor Writer {
@Published private(set) public var isRecording = false
func startRecording() {
isRecording = true
}
func stopRecording() {
isRecording = false
}
}
The function observeValues gives an error:
Non-sendable type 'Published<Bool>.Publisher' in implicitly asynchronous access to actor-isolated property '$isRecording' cannot cross actor boundary
I tried everything to fix it but all in vain. Can someone please point out if the architecture of AVCam sample code is flawed or there is an easy fix?
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