On 2018-Dec-28, Michael Paquier wrote:
> On Thu, Dec 27, 2018 at 04:30:21PM -0300, Alvaro Herrera wrote:
> > We allow structs to receive new members at the end of the struct, since
> > this doesn't affect the offset of existing members; thus code already
> > compiled with the previous struct definition does not break. AFAICS
> > there is no danger in backpatching that, moving that struct member at
> > the end of the struct.
>
> Sure. Now this comes to PGPROC, which I am not sure we can say is
> never manipulated as an array.
The server code allocates arrays, but that's fine because that code is
recompiled. Extensions only pass pointers around -- they don't create
any additional arrays.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
