[Bug c++/80635] std::optional and bogus -Wmaybe-uninitialized warning

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80635

--- Comment #31 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to Pedro Alves from comment #30)
> I assume so, but do we really want to zero-initialize the buffer?  T might
> be large, and I'd think that pessimization to quiet a warning isn't the
> right way to go?

The usual way to quiet a maybe-uninit warning is to add redundant
initialization; this doesn't seem that different, apart from it being in a
library that could potentially be used in performance-sensitive code.