I would do wall wextra and werror. Again mostly for my own sanity. But I'd wait to add werror until they were all fixed so regression testing would continue as

I would do wall wextra and werror. Again mostly for my own sanity. But I'd wait to add werror until they were all fixed so regression testing would continue as the warnings got fixed. Cpp_check and clang tidy would also eventually halt the pipeline. And *san on the tests as compiled in both debug and O3 with a couple compilers.