Program: 93942
Project: 93942
Buggy source:
public void onDescriptorRead(BluetoothGattDescriptor desc,byte[] value,int gattStatus){
  if (!isFor(desc)) {
    return;
  }
  if (Utils.isSuccess(gattStatus)) {
    if (Arrays.equals(value,mNameSpaceAndDescription)) {
      if (false == getDevice().getNativeGatt().readCharacteristic(desc.getCharacteristic())) {
        fail(BleDevice.ReadWriteListener.Status.FAILED_TO_SEND_OUT,BleStatuses.GATT_STATUS_NOT_APPLICABLE,BleDevice.ReadWriteListener.Target.DESCRIPTOR,desc.getCharacteristic().getUuid(),BleDevice.ReadWriteListener.ReadWriteEvent.NON_APPLICABLE_UUID);
      }
 else {
      }
    }
 else {
      batteryChars.remove(desc.getCharacteristic());
      if (batteryChars.size() == 0) {
        fail(BleDevice.ReadWriteListener.Status.NO_MATCHING_TARGET,BleStatuses.GATT_STATUS_NOT_APPLICABLE,BleDevice.ReadWriteListener.Target.DESCRIPTOR,desc.getCharacteristic().getUuid(),desc.getUuid());
      }
 else {
        final BluetoothGattCharacteristic ch=batteryChars.get(0);
        final BluetoothGattDescriptor descr=ch.getDescriptor(Uuids.CHARACTERISTIC_PRESENTATION_FORMAT_DESCRIPTOR_UUID);
        if (!getDevice().getNativeGatt().readDescriptor(descr)) {
          fail(BleDevice.ReadWriteListener.Status.FAILED_TO_SEND_OUT,BleStatuses.GATT_STATUS_NOT_APPLICABLE,BleDevice.ReadWriteListener.Target.DESCRIPTOR,ch.getUuid(),descr.getUuid());
        }
 else {
        }
      }
    }
  }
 else {
    fail(BleDevice.ReadWriteListener.Status.REMOTE_GATT_FAILURE,gattStatus,getDefaultTarget(),getCharUuid(),getDescUuid());
  }
}

Fixed version (ground truth):
public void onDescriptorRead(BluetoothGattDescriptor desc,byte[] value,int gattStatus){
  if (!batteryChars.contains(desc.getCharacteristic())) {
    return;
  }
  if (Utils.isSuccess(gattStatus)) {
    final byte[] nmdesc=Arrays.copyOfRange(value,4,7);
    if (Arrays.equals(nmdesc,mNameSpaceAndDescription)) {
      if (false == getDevice().getNativeGatt().readCharacteristic(desc.getCharacteristic())) {
        fail(BleDevice.ReadWriteListener.Status.FAILED_TO_SEND_OUT,BleStatuses.GATT_STATUS_NOT_APPLICABLE,BleDevice.ReadWriteListener.Target.DESCRIPTOR,desc.getCharacteristic().getUuid(),BleDevice.ReadWriteListener.ReadWriteEvent.NON_APPLICABLE_UUID);
      }
 else {
      }
    }
 else {
      batteryChars.remove(desc.getCharacteristic());
      if (batteryChars.size() == 0) {
        fail(BleDevice.ReadWriteListener.Status.NO_MATCHING_TARGET,BleStatuses.GATT_STATUS_NOT_APPLICABLE,BleDevice.ReadWriteListener.Target.DESCRIPTOR,desc.getCharacteristic().getUuid(),desc.getUuid());
      }
 else {
        final BluetoothGattCharacteristic ch=batteryChars.get(0);
        final BluetoothGattDescriptor descr=ch.getDescriptor(Uuids.CHARACTERISTIC_PRESENTATION_FORMAT_DESCRIPTOR_UUID);
        if (!getDevice().getNativeGatt().readDescriptor(descr)) {
          fail(BleDevice.ReadWriteListener.Status.FAILED_TO_SEND_OUT,BleStatuses.GATT_STATUS_NOT_APPLICABLE,BleDevice.ReadWriteListener.Target.DESCRIPTOR,ch.getUuid(),descr.getUuid());
        }
 else {
        }
      }
    }
  }
 else {
    fail(BleDevice.ReadWriteListener.Status.REMOTE_GATT_FAILURE,gattStatus,getDefaultTarget(),getCharUuid(),getDescUuid());
  }
}