[Bug sanitizer/70717] -fsanitize=object-size as warning

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70717

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
You might get the warning with -D_FORTIFY_SOURCE=1 but I have not tried it
myself.