Re: BUG #16112: large, unexpected memory consumption

Andres Freund <andres@anarazel.de> writes:
> On 2019-11-13 15:50:04 +0100, Tomas Vondra wrote:
>> The attached trivial patch fixes that by adding a pfree() at the end of
>> the function.

> Hm. That's clearly an improvement. But I'm not quite sure it's really
> the right direction. It seems like a bad idea to rely on
> ExecMakeTableFunctionResult() otherwise never leaking any memory.

Considering that ExecMakeTableFunctionResult went from zero pallocs
to one, I don't see a strong reason why it should have bothered with
a private memory context before, nor do I think that's a good
response now.

            regards, tom lane