https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112789
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- So just for future reference __builtin_c[lt]zs is for short. But with GCC 14 (trunk) added __builtin_ct[lt]g, there is no need to add __builtin_c[lt]zs to GCC. You could just do: #if __has_builtin(__builtin_ctzg) && !__has_builtin(__builtin_ctzs) #define ctzs(a) __builtin_ctzg((short)a) #elif __has_builtin(__builtin_ctzs) #define ctzs(a) __builtin_ctzs((short)a) #else #error implement fall back for not both cases #endif
