[RFC PATCH v2 04/12] print_fields.h: add PRINT_FIELD_LEN macro

[Dmitry V. Levin]

On Fri, Jun 12, 2020 at 08:23:58PM +0200, Ákos Uzonyi wrote:
[...]
> diff --git a/print_fields.h b/print_fields.h
> index 02c56bf9..1bca3a9b 100644
> --- a/print_fields.h
> +++ b/print_fields.h
> @@ -277,4 +277,18 @@
>  			       (size_), (hwtype_));			\
>  	} while (0)
>  
> +# define PRINT_FIELD_LEN(prefix_, where_, field_, 			\
> +			len_, print_func_, args...)			\
> +	do {								\
> +		unsigned int start = offsetof(typeof(where_), field_);	\
> +		unsigned int end = start + sizeof(where_.field_);	\
> +		if (len_ >= end) {					\
> +			print_func_(prefix_, where_, field_, ##args);	\
> +		} else if (len_ > start) {				\
> +			tprintf("%s%s=", prefix_, #field_);		\
> +			print_quoted_string((void *)&where_.field_,	\
> +					len_ - start, QUOTE_FORCE_HEX);	\
> +		}							\
> +	} while (0);

There should be no trailing semicolon.


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ldv