Program: 62842
Project: 62842
Buggy source:
@Override protected void onCreate(Bundle savedInstanceState){
  super.onCreate(savedInstanceState);
  setContentView(R.layout.debug_log);
  final LibVLC instance;
  try {
    instance=VLCInstance.getLibVlcInstance();
  }
 catch (  LibVlcException e) {
    return;
  }
  final Button startLog=(Button)findViewById(R.id.start_log);
  final Button stopLog=(Button)findViewById(R.id.stop_log);
  startLog.setEnabled(!instance.isDebugBuffering());
  stopLog.setEnabled(instance.isDebugBuffering());
  startLog.setOnClickListener(new View.OnClickListener(){
    @Override public void onClick(    View v){
      instance.startDebugBuffer();
      startLog.setEnabled(false);
      stopLog.setEnabled(true);
    }
  }
);
  stopLog.setOnClickListener(new View.OnClickListener(){
    @Override public void onClick(    View v){
      instance.stopDebugBuffer();
      stopLog.setEnabled(false);
      startLog.setEnabled(true);
    }
  }
);
  Button clearLog=(Button)findViewById(R.id.clear_log);
  clearLog.setOnClickListener(new View.OnClickListener(){
    @Override public void onClick(    View v){
      instance.clearBuffer();
      updateTextView(instance);
    }
  }
);
  updateTextView(instance);
  Button copyToClipboard=(Button)findViewById(R.id.copy_to_clipboard);
  if (((TextView)findViewById(R.id.textview)).getText().length() > 0)   copyToClipboard.setEnabled(true);
  copyToClipboard.setOnClickListener(new View.OnClickListener(){
    @Override public void onClick(    View v){
      copyTextToClipboard();
      Toast.makeText(DebugLogActivity.this,R.string.copied_to_clipboard,Toast.LENGTH_SHORT).show();
    }
  }
);
}

Fixed version (ground truth):
@Override protected void onCreate(Bundle savedInstanceState){
  super.onCreate(savedInstanceState);
  setContentView(R.layout.debug_log);
  final LibVLC instance;
  try {
    instance=VLCInstance.getLibVlcInstance();
  }
 catch (  LibVlcException e) {
    return;
  }
  final Button startLog=(Button)findViewById(R.id.start_log);
  final Button stopLog=(Button)findViewById(R.id.stop_log);
  startLog.setEnabled(!instance.isDebugBuffering());
  stopLog.setEnabled(instance.isDebugBuffering());
  startLog.setOnClickListener(new View.OnClickListener(){
    @Override public void onClick(    View v){
      instance.startDebugBuffer();
      startLog.setEnabled(false);
      stopLog.setEnabled(true);
    }
  }
);
  stopLog.setOnClickListener(new View.OnClickListener(){
    @Override public void onClick(    View v){
      instance.stopDebugBuffer();
      stopLog.setEnabled(false);
      startLog.setEnabled(true);
    }
  }
);
  Button clearLog=(Button)findViewById(R.id.clear_log);
  clearLog.setOnClickListener(new View.OnClickListener(){
    @Override public void onClick(    View v){
      instance.clearBuffer();
      updateTextView(instance);
    }
  }
);
  updateTextView(instance);
  Button copyToClipboard=(Button)findViewById(R.id.copy_to_clipboard);
  copyToClipboard.setEnabled(((TextView)findViewById(R.id.textview)).getText().length() > 0);
  copyToClipboard.setOnClickListener(new View.OnClickListener(){
    @Override public void onClick(    View v){
      copyTextToClipboard();
      Toast.makeText(DebugLogActivity.this,R.string.copied_to_clipboard,Toast.LENGTH_SHORT).show();
    }
  }
);
}