Crash on cancel: [__NSTaggedDate countByEnumeratingWithState:objects:count:]: unrecognized selector sent to instance #2441
Description
Getting the following sporadic crash. Seems like we are using strict concurrency but a number of cases of unchecked means that we bypass the guarantee.
Here's some code from the trace
actor CachedAsyncImageCacheProcessor: CachedAsyncImageCacheProcessable {
...
func cancel(url: URL) {
guard let downloadTaskCount = pendingTasksURLMap[url] else { return }
if downloadTaskCount.`count` == 0 {
downloadTaskCount.task.cancel()
pendingTasksURLMap[url] = nil
imageRetriever.cancel(url: url) // traces here
} else {
pendingTasksURLMap[url] = TaskCount(task: downloadTaskCount.task, count: downloadTaskCount.count - 1)
}
}
...
}
class RemoteImageManager: CachedAsyncImageRetrievable {
...
func cancel(url: URL) {
worker.cancelDownload(url: url) // traces here
}
...
}
final class KingfisherWorker: RemoteImageWorkable {
...
func cancelDownload(url: URL) {
KingfisherManager.shared.downloader.cancel(url: url) // traces here
}
...