On 9/11/21 1:19 PM, Christian Weisgerber wrote:
> +/* See the definition of 'struct sigcontext' in
> +   openbsd-src/sys/arch/powerpc64/include/signal.h.  */
> +
> +#  define SIGSEGV_FAULT_STACKPOINTER  scp->sc_sp

Thanks for the heads-up. What you suggested looks safe so I installed 
the attached patch into Gnulib master on savannah. The "(tiny change)" 
means the change is so small we needn't worry about copyright papers.

Bruno may eventually have a better patch in mind.

Are similar changes needed for other OpenBSD architectures?