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.