Memory leaks occured when obtain some value related to URLResourceKey

[baju0218]

When I try to obtain free disk space size through the example code in the document below, but it seems that memory leak occurs when using all api related to URLResourceKey. Running with instrument, it seems that objects such as CFString are not released inside Foundation.

https://developer.apple.com/documentation/foundation/urlresourcekey/checking_volume_storage_capacity

example)

while (true) {
  let fileURL = URL(fileURLWithPath:"/")
  do {
      let values = try fileURL.resourceValues(forKeys: [.volumeAvailableCapacityForImportantUsageKey])
      if let capacity = values.volumeAvailableCapacityForImportantUsage {
          print("Available capacity for important usage: \(capacity)")
      } else {
          print("Capacity is unavailable")
      }
  } catch {
      print("Error retrieving capacity: \(error.localizedDescription)")
  }
}

[jrflat]

Wrapping the do/catch in an autoreleasepool prevents the memory leak, but we should fix this internally. I'll forward this to the responsible team, thanks for filing!

[baju0218]

Actually, I want to use above code in objective-c side. In swift, it's possible to prevent memory leakage by wrapping with autoreleasepool, but objective-c can't prevent it with the @autoreleasepool.