Program: 110322
Project: 110322
Buggy source:
void handleEvent(Message msg){
switch (msg.what) {
case ExoPlayerImplInternal.MSG_STATE_CHANGED:
{
      playbackState=msg.arg1;
      for (      EventListener listener : listeners) {
        listener.onPlayerStateChanged(playWhenReady,playbackState);
      }
      break;
    }
case ExoPlayerImplInternal.MSG_LOADING_CHANGED:
{
    isLoading=msg.arg1 != 0;
    for (    EventListener listener : listeners) {
      listener.onLoadingChanged(isLoading);
    }
    break;
  }
case ExoPlayerImplInternal.MSG_TRACKS_CHANGED:
{
  TrackInfo trackInfo=(TrackInfo)msg.obj;
  tracksSelected=true;
  trackGroups=trackInfo.groups;
  trackSelections=trackInfo.selections;
  trackSelector.onSelectionActivated(trackInfo.info);
  for (  EventListener listener : listeners) {
    listener.onTracksChanged(trackGroups,trackSelections);
  }
  break;
}
case ExoPlayerImplInternal.MSG_SEEK_ACK:
{
pendingSeekAcks-=msg.arg1;
if (pendingSeekAcks == 0) {
  playbackInfo=(ExoPlayerImplInternal.PlaybackInfo)msg.obj;
  for (  EventListener listener : listeners) {
    listener.onPositionDiscontinuity();
  }
}
break;
}
case ExoPlayerImplInternal.MSG_POSITION_DISCONTINUITY:
{
if (pendingSeekAcks == 0) {
playbackInfo=(ExoPlayerImplInternal.PlaybackInfo)msg.obj;
for (EventListener listener : listeners) {
  listener.onPositionDiscontinuity();
}
}
break;
}
case ExoPlayerImplInternal.MSG_SOURCE_INFO_REFRESHED:
{
@SuppressWarnings("String_Node_Str") Pair<Timeline,Object> timelineAndManifest=(Pair<Timeline,Object>)msg.obj;
timeline=timelineAndManifest.first;
manifest=timelineAndManifest.second;
for (EventListener listener : listeners) {
listener.onTimelineChanged(timeline,manifest);
}
break;
}
case ExoPlayerImplInternal.MSG_ERROR:
{
ExoPlaybackException exception=(ExoPlaybackException)msg.obj;
for (EventListener listener : listeners) {
listener.onPlayerError(exception);
}
break;
}
}
}

Fixed version (ground truth):
void handleEvent(Message msg){
switch (msg.what) {
case ExoPlayerImplInternal.MSG_STATE_CHANGED:
{
      playbackState=msg.arg1;
      for (      EventListener listener : listeners) {
        listener.onPlayerStateChanged(playWhenReady,playbackState);
      }
      break;
    }
case ExoPlayerImplInternal.MSG_LOADING_CHANGED:
{
    isLoading=msg.arg1 != 0;
    for (    EventListener listener : listeners) {
      listener.onLoadingChanged(isLoading);
    }
    break;
  }
case ExoPlayerImplInternal.MSG_TRACKS_CHANGED:
{
  TrackInfo trackInfo=(TrackInfo)msg.obj;
  tracksSelected=true;
  trackGroups=trackInfo.groups;
  trackSelections=trackInfo.selections;
  trackSelector.onSelectionActivated(trackInfo.info);
  for (  EventListener listener : listeners) {
    listener.onTracksChanged(trackGroups,trackSelections);
  }
  break;
}
case ExoPlayerImplInternal.MSG_SEEK_ACK:
{
if (--pendingSeekAcks == 0) {
  playbackInfo=(ExoPlayerImplInternal.PlaybackInfo)msg.obj;
  for (  EventListener listener : listeners) {
    listener.onPositionDiscontinuity();
  }
}
break;
}
case ExoPlayerImplInternal.MSG_POSITION_DISCONTINUITY:
{
if (pendingSeekAcks == 0) {
playbackInfo=(ExoPlayerImplInternal.PlaybackInfo)msg.obj;
for (EventListener listener : listeners) {
  listener.onPositionDiscontinuity();
}
}
break;
}
case ExoPlayerImplInternal.MSG_SOURCE_INFO_REFRESHED:
{
SourceInfo sourceInfo=(SourceInfo)msg.obj;
timeline=sourceInfo.timeline;
manifest=sourceInfo.manifest;
playbackInfo=sourceInfo.playbackInfo;
pendingSeekAcks-=sourceInfo.seekAcks;
for (EventListener listener : listeners) {
listener.onTimelineChanged(timeline,manifest);
}
break;
}
case ExoPlayerImplInternal.MSG_ERROR:
{
ExoPlaybackException exception=(ExoPlaybackException)msg.obj;
for (EventListener listener : listeners) {
listener.onPlayerError(exception);
}
break;
}
}
}