On Wed, Jul 31, 2024, at 18:38, Yury Norov wrote: > OK then, I see. So, is that a GCC bug or intentional behavior? I just double-checked to see what is in C23 and found that it indeed defines a 'wb' and 'wbu' suffix for arbitrarily sized integers. This is supported by gcc-14 and clang-15 or higher on 64-bit architectures. It's too early to rely on those versions though, as gcc-14 was only just released. Arnd