https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114995
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Oh this is the more correct syntax: [[assume((uintptr_t(x_array) & (32-1)) == 0)]]; [[assume((uintptr_t(mul_array) & (32-1)) == 0)]]; [[assume((uintptr_t(add_array) & (32-1)) == 0)]];