1 // Copyright 2022 The Pigweed Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not 4 // use this file except in compliance with the License. You may obtain a copy of 5 // the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12 // License for the specific language governing permissions and limitations under 13 // the License. 14 15 #include "pw_result/result.h" 16 Multiply(int a,int b)17pw::Result<int> Multiply(int a, int b) { return a * b; } 18 AddTwo(int x)19int AddTwo(int x) { return x + 2; } 20 21 int volatile* unoptimizable; 22 main()23int main() { 24 pw::Result result = 25 Multiply(*unoptimizable, *unoptimizable).transform(AddTwo); 26 27 if (!result.ok()) { 28 return -1; 29 } 30 31 return *result; 32 } 33