On Thu, Sep 7, 2017 at 12:59 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> The idea I'd had was to apply the masking only if pd_lower >=
> SizeOfPageHeaderData, or if you wanted to be stricter, only if
> pd_lower != 0.
If putting a check, it seems to me that the stricter one makes the
most sense. pd_lower should remain at 0 on pre-10 servers.
--
Michael