Re: possible memory leak with SRFs

Hi,

>> Can someone please explain why we do not reset the expression context
>> if an SRF is involved during execution?
>
> Consider
>        srf(foo(col))
> where foo returns a pass-by-reference datatype.  Your proposed patch
> would cut the knees out from under argument values that the SRF could
> reasonably expect to still be there on subsequent calls.
>

Yeah this is my basic confusion. But wouldn't the arguments be
evaluated afresh on the subsequent call for this SRF? In that case
freeing up the context of the *last* call should not be an issue I
would think.

And if this is indeed the case we should be using a different longer
lived context and not the ecxt_per_tuple_memory context..

Regards,
Nikhils
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