https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89192
--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> --- On the other hand, it looks like an "easy" case where the front-end could notice that we are using b as an rvalue before it is initialized and warn about it without relying on the middle-end. It could fall under order-of-initialization instead of uninitialized.
