[Bug c++/122083] [15/16 Regression] Bogus -Wnonnull for call to memcmp with length determined using <=> operator

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122083

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #1)
> Seems to be a regression caused by
> r15-3328-g673a448aa24efedd5ac140ebf7bfe652d7a6a846
> 
> "Optimize initialization of small padded objects"

That's what I found from bisection, although it doesn't seem to make much sense
to me.