[Bug c++/111771] Incorrect "is used uninitialized" warning, as if zero-initialization didn't propagate through user-provided default constructors

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111771

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
-fno-lifetime-dse fixes the issue (and the diagnostic)