[Bug libstdc++/93456] No overflow check in __atomic_futex_unsigned_base::_M_futex_wait_until

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93456

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed on trunk by the patch above and a few other recent commits today.