Hi Florian, On Thu, Nov 24, 2022 at 06:28:44AM +0100, Florian Weimer wrote: > > Right? And if you look at the expansion of that glibc macro, it's just: > > > > #define INTERNAL_SYSCALL_ERROR_P(val) \ > > ((unsigned long int) (val) > -4096UL) > > > > So it looks like the same exact thing? > > syscall already does internally (with a translation to -1, not NULL), so > the caller shouldn't do it again. The userspace syscall function does > *not* return an error code. Ahh, okay. Thanks. I'll fix up the example to assume those semantics. Jason
