[Bug middle-end/105424] Bogus -Wstringop-overread with non-overread condition

[byteslice at airmail dot cc]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105424

--- Comment #3 from Liam White <byteslice at airmail dot cc> ---
Compile with c++ -std=gnu++20 -O1 -Werror=stringop-overread to reproduce.