// Copyright 2019 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.

// This is an overly-simplified main to serve as a base executable for the
// example. Note that using a main like this directly as a base is not a good
// idea because of over-reporting size increases due to standard functionality
// like memmove; this is just to illustrate the most basic setup.
int main(int argc, char** argv) {
  (void)argc;
  (void)argv;
  return 0;
}
