On Mon, Dec 5, 2011 at 2:47 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Peter Eisentraut <peter_e@gmx.net> writes:
>> To clarify, I believe the rule is that the first variable-length field
>> can be accessed as a struct field. Are there any exceptions to this?
>
> If it is known not null, yes, but I wonder just how many places actually
> depend on that. It might be better to remove all varlena fields from C
> visibility and require use of the accessor functions. We should at
> least look into what that would cost us.
My impression is that all the varlena fields also allow nulls. So I
think there's no point in trying to keep the first one C-accessible.
--
Robert Haas
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