Program: 83723
Project: 83723
Buggy source:
/** 
 * Call from the handler for ACTION_PACKAGE_ADDED, ACTION_PACKAGE_REMOVED and ACTION_PACKAGE_CHANGED.
 */
public void onReceive(Context context,Intent intent){
  context=mApp;
  final String packageName=intent.getData().getSchemeSpecificPart();
  ArrayList<ApplicationInfo> added=null;
  ArrayList<ApplicationInfo> removed=null;
  ArrayList<ApplicationInfo> modified=null;
  boolean update=false;
  boolean remove=false;
synchronized (mLock) {
    if (mBeforeFirstLoad) {
      return;
    }
    final String action=intent.getAction();
    final boolean replacing=intent.getBooleanExtra(Intent.EXTRA_REPLACING,false);
    if (packageName == null || packageName.length() == 0) {
      return;
    }
    if (Intent.ACTION_PACKAGE_CHANGED.equals(action)) {
      mAllAppsList.updatePackage(context,packageName);
      update=true;
    }
 else     if (Intent.ACTION_PACKAGE_REMOVED.equals(action)) {
      if (!replacing) {
        mAllAppsList.removePackage(packageName);
        remove=true;
      }
    }
 else {
      if (!replacing) {
        mAllAppsList.addPackage(context,packageName);
      }
 else {
        mAllAppsList.updatePackage(context,packageName);
        update=true;
      }
    }
    if (mAllAppsList.added.size() > 0) {
      added=mAllAppsList.added;
      mAllAppsList.added=new ArrayList<ApplicationInfo>();
    }
    if (mAllAppsList.removed.size() > 0) {
      removed=mAllAppsList.removed;
      mAllAppsList.removed=new ArrayList<ApplicationInfo>();
      for (      ApplicationInfo info : removed) {
        AppInfoCache.remove(info.intent.getComponent());
      }
    }
    if (mAllAppsList.modified.size() > 0) {
      modified=mAllAppsList.modified;
      mAllAppsList.modified=new ArrayList<ApplicationInfo>();
    }
    final Callbacks callbacks=mCallbacks != null ? mCallbacks.get() : null;
    if (callbacks == null) {
      Log.w(TAG,"String_Node_Str");
      return;
    }
    if (added != null) {
      final ArrayList<ApplicationInfo> addedFinal=added;
      mHandler.post(new Runnable(){
        public void run(){
          callbacks.bindPackageAdded(addedFinal);
        }
      }
);
    }
    if (update || modified != null) {
      final ArrayList<ApplicationInfo> modifiedFinal=modified;
      mHandler.post(new Runnable(){
        public void run(){
          callbacks.bindPackageUpdated(packageName,modifiedFinal);
        }
      }
);
    }
    if (remove || removed != null) {
      final ArrayList<ApplicationInfo> removedFinal=removed;
      mHandler.post(new Runnable(){
        public void run(){
          callbacks.bindPackageRemoved(packageName,removedFinal);
        }
      }
);
    }
  }
}

Fixed version (ground truth):
/** 
 * Call from the handler for ACTION_PACKAGE_ADDED, ACTION_PACKAGE_REMOVED and ACTION_PACKAGE_CHANGED.
 */
public void onReceive(Context context,Intent intent){
  context=mApp;
  final String packageName=intent.getData().getSchemeSpecificPart();
  ArrayList<ApplicationInfo> added=null;
  ArrayList<ApplicationInfo> removed=null;
  ArrayList<ApplicationInfo> modified=null;
synchronized (mLock) {
    if (mBeforeFirstLoad) {
      return;
    }
    final String action=intent.getAction();
    final boolean replacing=intent.getBooleanExtra(Intent.EXTRA_REPLACING,false);
    if (packageName == null || packageName.length() == 0) {
      return;
    }
    if (Intent.ACTION_PACKAGE_CHANGED.equals(action)) {
      mAllAppsList.updatePackage(context,packageName);
    }
 else     if (Intent.ACTION_PACKAGE_REMOVED.equals(action)) {
      if (!replacing) {
        mAllAppsList.removePackage(packageName);
      }
    }
 else {
      if (!replacing) {
        mAllAppsList.addPackage(context,packageName);
      }
 else {
        mAllAppsList.updatePackage(context,packageName);
      }
    }
    if (mAllAppsList.added.size() > 0) {
      added=mAllAppsList.added;
      mAllAppsList.added=new ArrayList<ApplicationInfo>();
    }
    if (mAllAppsList.removed.size() > 0) {
      removed=mAllAppsList.removed;
      mAllAppsList.removed=new ArrayList<ApplicationInfo>();
      for (      ApplicationInfo info : removed) {
        AppInfoCache.remove(info.intent.getComponent());
      }
    }
    if (mAllAppsList.modified.size() > 0) {
      modified=mAllAppsList.modified;
      mAllAppsList.modified=new ArrayList<ApplicationInfo>();
    }
    final Callbacks callbacks=mCallbacks != null ? mCallbacks.get() : null;
    if (callbacks == null) {
      Log.w(TAG,"String_Node_Str");
      return;
    }
    if (added != null) {
      final ArrayList<ApplicationInfo> addedFinal=added;
      mHandler.post(new Runnable(){
        public void run(){
          callbacks.bindPackageAdded(addedFinal);
        }
      }
);
    }
    if (modified != null) {
      final ArrayList<ApplicationInfo> modifiedFinal=modified;
      mHandler.post(new Runnable(){
        public void run(){
          callbacks.bindPackageUpdated(packageName,modifiedFinal);
        }
      }
);
    }
    if (removed != null) {
      final ArrayList<ApplicationInfo> removedFinal=removed;
      mHandler.post(new Runnable(){
        public void run(){
          callbacks.bindPackageRemoved(packageName,removedFinal);
        }
      }
);
    }
  }
}