On Sat, 2026-09-19 at 12:20 +0200, Jakub Juszczakiewicz wrote: > Thanks for quick reply! > Ok, so I need to do this check in other way. It's good to now. If you have a large legacy code base full of this kind of thing you may disable those optimizations using -fwrapv. For new code it's better to use stdckdint.h. > -- Xi Ruoyao <xry111@xry111.site>