[crash] TorrentHandle.filePriorities() -> torrent_handle.get_file_priorities().get(n) broken

[gubatron]

public Priority[] filePriorities() {
        download_priority_vector v = th.get_file_priorities();
        int size = (int) v.size();
        Priority[] arr = new Priority[size];
        for (int i = 0; i < size; i++) {
            arr[i] = Priority.fromSwig(v.get(i));
        }
        return arr;
    }

When Priority.fromSwig() received the swig value out of v.get(i), it receives a value that does not correspond to any of the expected Priority enums swig values.

The swig values on each one of these enums are:

IGNORE -> int 0 NORMAL -> int 1 ... and so on.

When Priority.fromSwig(v.get(i)) is running, v.get(i) is passing something completely unexpected:

and the loop ends up throwing an IllegalArgumentException("Invalid native value");

The issue is clearly with the download_priority_vector object returned by th.get_file_priorities()

The implementation of this method in torrent_handle.java is as follows:

public download_priority_vector get_file_priorities() {
    return new download_priority_vector(libtorrent_jni.torrent_handle_get_file_priorities(swigCPtr, this), true);
  }

I played manually with the libtorrent_jni code with the debugger with no luck, my guess is that this is deeper in the stack.

[gubatron]

oh I think you got it already https://github.com/frostwire/frostwire-jlibtorrent/commit/1cdfdc1b91685cd9a43b12cb6aa704bb41cf9341