Re: [PATCH 20/26] xfs_db: report bigtime format timestamps

[Christoph Hellwig <hch@xxxxxxxxxxxxx>]

> +static void
> +fp_time64(
> +	time64_t		sec)
>  {
> +	time_t			tt = sec;
>  	char			*c;
> +
> +	BUILD_BUG_ON(sizeof(long) != sizeof(time_t));

Why?