| // Copyright 2022 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. |
| |
| #include "pw_result/result.h" |
| |
| pw::Result<int> Multiply(int a, int b) { return a * b; } |
| |
| pw::Result<int> AddTwo(int x) { return x + 2; } |
| |
| int volatile* unoptimizable; |
| |
| int main() { |
| pw::Result result = Multiply(*unoptimizable, *unoptimizable).and_then(AddTwo); |
| |
| if (!result.ok()) { |
| return -1; |
| } |
| |
| return *result; |
| } |