[Bug libstdc++/127005] Wmaybe-uninitialized with optional>

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127005

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Comment 2 is definitely undefined. 

https://eel.is/c++draft/library#reentrancy-2