[Bug c/85744] Returning INT_FAST64_MIN become zero

[cerlane at nscc dot sg]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85744

--- Comment #2 from cerlane <cerlane at nscc dot sg> ---
(In reply to Andrew Pinski from comment #1)
> Try 0x8000000000000000ULL

No unfortunately, it still returns 0x0.