Re: [PATCH v2 02/10] x86/percpu: Clean up percpu_to_op()

[Peter Zijlstra]

On Sat, May 30, 2020 at 06:11:19PM -0400, Brian Gerst wrote:
> +     if (0) {                                                        \
> +             typeof(_var) pto_tmp__;                                 \
> +             pto_tmp__ = (_val);                                     \
> +             (void)pto_tmp__;                                        \
> +     }                                                               \

This is repeated at least once more; and it looks very similar to
__typecheck() and typecheck() but is yet another variant afaict.