message: More linux compile warning fixes
diff: @@ -367,7 +367,7 @@ PoplarExecutor::ExecuteEngine(poplar::Engine* engine,
  for (size_t a = 0; a < args.size(); a++) {
  auto mem = args[a];
  TensorControl *tc = reinterpret_cast<TensorControl *>(mem.opaque());
  - if (tc->on_device == false || tc->input_handle != a || engine_changed) {
  + if (tc->on_device == false || tc->input_handle != (int64)a || engine_changed) {
  void *buf(static_cast<void *>(tc->data));
  if (input_convertors[a]) {
  std::vector<char> converted = input_convertors[a](buf, tc->size, 0);
  