We will extend the source code of the previous recipe with a minor change in src/sum_integers.cpp, where we will add a function - sum_integers_unused:
#include "sum_integers.hpp"#include <vector>int sum_integers(const std::vector<int> integers) { auto sum = 0; for (auto i : integers) { sum += i; } return sum;}int sum_integers_unused(const std::vector<int> integers) { auto sum = 0; for (auto i : integers) { sum += i; } return sum;}
Our goal is to detect this unused code with a test coverage analysis, by using gcov (https://gcc.gnu.org/onlinedocs/gcc/Gcov.html). Apart from the preceding modification, we will use the unmodified sources of the previous recipe.
