Zdenek Kotala <[EMAIL PROTECTED]> writes:
> By the way, do you need CRC as a first page member? Is it for future 
> development 
> like CLOG integration into buffers? Why not put it on the end as and mark it 
> as 
> a special? It will reduce space requirement when CRC is not enabled.

... and make life tremendously more complex for indexes, plus turning
CRC checking on or off on-the-fly would be problematic.  I think Alvaro
has the right idea: just put the field there all the time.

                        regards, tom lane

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