https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63218
--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> --- (In reply to H.J. Lu from comment #2) > X32 also wants long long. Is there a good way to ask for the longest of the integer types that are fast? stdint.h has things like int_fastN_t (btw, I don't like some of the choices I see for them in glibc (probably imposed by the ABI though)), but this is a different question. That may not be so well-defined though.