Recently I had a patch where I converted a std::pair<int, vector> to a struct to improve readability:

struct MyStruct {
    int errCode;
    std::vector items;
};

This change introduced the bug that while std::pair initializes the values to defaults (so the int gets initialized to 0), the struct doesn't do this, meaning that there might be a garbage value in the errCode field.

Can we add a clang-tidy rule to cover this case? Or does Coverity already cover it? See the comments for more info; it seems a memory sanitizer may or may not catch this bug.