Joe Conway <m...@joeconway.com> writes:
> On 06/18/2014 08:19 PM, Tom Lane wrote:
>> Actually, I was wondering whether we couldn't remove that
>> CreateTupleDescCopy call entirely.
> Apparently not, at least without some additional surgery.
> ExecMakeTableFunctionResult() tries to free the tupledesc and segfaults.
Hmm ... oh, I missed this bit:
/* We must get the tupledesc from call context */
if (rsinfo && IsA(rsinfo, ReturnSetInfo) &&
rsinfo->expectedDesc != NULL)
{
result = TYPEFUNC_COMPOSITE;
if (resultTupleDesc)
*resultTupleDesc = rsinfo->expectedDesc;
/* Assume no polymorphic columns here, either */
}
So it's passing back the same tupdesc passed in by the caller of
ExecMakeTableFunctionResult. We can free that all right, but the caller
won't be happy :-(
regards, tom lane
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