Re: Extending amcheck to check toast size and compression

> @@ -30,6 +30,9 @@ PG_FUNCTION_INFO_V1(verify_heapam);
>  /* The number of columns in tuples returned by verify_heapam */
>  #define HEAPCHECK_RELATION_COLS 4
>  
> +/* The largest valid toast va_rawsize */
> +#define VARLENA_SIZE_LIMIT 0x3FFFFFFF
> +

Hmm, a toasted datum cannot be larger than MaxAllocSize, because it's 
reconstituted in a palloc'd datum, right?

- Heikki