[Bug c/87581] Misaligned 16-bit read trap on x86 platform should be either fixed or documented.

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87581

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Use -fsantizer=undefined to catch this at runtime even without sse or
otherwise.