Program: 42475
Project: 42475
Buggy source:
private boolean setupButtons(){
  View defaultButton=null;
  int BIT_BUTTON_POSITIVE=1;
  int BIT_BUTTON_NEGATIVE=2;
  int BIT_BUTTON_NEUTRAL=4;
  int whichButtons=0;
  mButtonPositive=(Button)mWindow.findViewById(R.id.button1);
  mButtonPositive.setOnClickListener(mButtonHandler);
  if (TextUtils.isEmpty(mButtonPositiveText)) {
    mButtonPositive.setVisibility(View.GONE);
  }
 else {
    mButtonPositive.setText(mButtonPositiveText);
    mButtonPositive.setVisibility(View.VISIBLE);
    defaultButton=mButtonPositive;
    whichButtons=whichButtons | BIT_BUTTON_POSITIVE;
  }
  mButtonNegative=(Button)mWindow.findViewById(R.id.button2);
  mButtonNegative.setOnClickListener(mButtonHandler);
  if (TextUtils.isEmpty(mButtonNegativeText)) {
    mButtonNegative.setVisibility(View.GONE);
  }
 else {
    mButtonNegative.setText(mButtonNegativeText);
    mButtonNegative.setVisibility(View.VISIBLE);
    if (defaultButton == null) {
      defaultButton=mButtonNegative;
    }
    whichButtons=whichButtons | BIT_BUTTON_NEGATIVE;
  }
  mButtonNeutral=(Button)mWindow.findViewById(R.id.button3);
  mButtonNeutral.setOnClickListener(mButtonHandler);
  if (TextUtils.isEmpty(mButtonNeutralText)) {
    mButtonNeutral.setVisibility(View.GONE);
  }
 else {
    mButtonNeutral.setText(mButtonNeutralText);
    mButtonNeutral.setVisibility(View.VISIBLE);
    if (defaultButton == null) {
      defaultButton=mButtonNeutral;
    }
    whichButtons=whichButtons | BIT_BUTTON_NEUTRAL;
  }
  if (whichButtons == BIT_BUTTON_POSITIVE) {
    centerButton(mButtonPositive);
  }
 else   if (whichButtons == BIT_BUTTON_NEGATIVE) {
    centerButton(mButtonNeutral);
  }
 else   if (whichButtons == BIT_BUTTON_NEUTRAL) {
    centerButton(mButtonNeutral);
  }
  return whichButtons != 0;
}

Fixed version (ground truth):
private boolean setupButtons(){
  int BIT_BUTTON_POSITIVE=1;
  int BIT_BUTTON_NEGATIVE=2;
  int BIT_BUTTON_NEUTRAL=4;
  int whichButtons=0;
  mButtonPositive=(Button)mWindow.findViewById(R.id.button1);
  mButtonPositive.setOnClickListener(mButtonHandler);
  if (TextUtils.isEmpty(mButtonPositiveText)) {
    mButtonPositive.setVisibility(View.GONE);
  }
 else {
    mButtonPositive.setText(mButtonPositiveText);
    mButtonPositive.setVisibility(View.VISIBLE);
    whichButtons=whichButtons | BIT_BUTTON_POSITIVE;
  }
  mButtonNegative=(Button)mWindow.findViewById(R.id.button2);
  mButtonNegative.setOnClickListener(mButtonHandler);
  if (TextUtils.isEmpty(mButtonNegativeText)) {
    mButtonNegative.setVisibility(View.GONE);
  }
 else {
    mButtonNegative.setText(mButtonNegativeText);
    mButtonNegative.setVisibility(View.VISIBLE);
    whichButtons=whichButtons | BIT_BUTTON_NEGATIVE;
  }
  mButtonNeutral=(Button)mWindow.findViewById(R.id.button3);
  mButtonNeutral.setOnClickListener(mButtonHandler);
  if (TextUtils.isEmpty(mButtonNeutralText)) {
    mButtonNeutral.setVisibility(View.GONE);
  }
 else {
    mButtonNeutral.setText(mButtonNeutralText);
    mButtonNeutral.setVisibility(View.VISIBLE);
    whichButtons=whichButtons | BIT_BUTTON_NEUTRAL;
  }
  if (whichButtons == BIT_BUTTON_POSITIVE) {
    centerButton(mButtonPositive);
  }
 else   if (whichButtons == BIT_BUTTON_NEGATIVE) {
    centerButton(mButtonNeutral);
  }
 else   if (whichButtons == BIT_BUTTON_NEUTRAL) {
    centerButton(mButtonNeutral);
  }
  return whichButtons != 0;
}