message: Fix hcc::device_vector<T>::push_back()
diff: @@ -297,6 +297,8 @@ void device_vector<T, Alloc>::push_back(typename device_vector<T, Alloc>::value_
  hc::accelerator_view av = alloc_.accelerator().get_default_view();
  av.copy(&x, data_ + size_, sizeof(T));
  +
  + ++size_;
  }
  // TODO: pop_back() and swap()
  