[RFC PATCH 04/12] print_fields.h: add PRINT_FIELD_LEN macro

[Dmitry V. Levin]

On Fri, Jun 12, 2020 at 04:33:48PM +0200, Ákos Uzonyi wrote:
> * print_fields.h (PRINT_FIELD_LEN): New macro.
[...]
> diff --git a/print_fields.h b/print_fields.h
> index 02c56bf9..2de7d613 100644
> --- a/print_fields.h
> +++ b/print_fields.h
> @@ -277,4 +277,18 @@
>  			       (size_), (hwtype_));			\
>  	} while (0)
>  
> +# define PRINT_FIELD_LEN(prefix_, struct_t_, struct_val_, field_, len_,	\
> +			print_func_, args...)				\
> +do {									\
> +	unsigned int start = offsetof(struct struct_t_, field_);	\
> +	unsigned int end = start + sizeof(struct_val_.field_);		\

Isn't struct_t_ argument redundant?
Can struct struct_t_ be replaced with typeof(struct_val_)?


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