Hi,

On 2014-04-24 19:40:30 -0400, Tom Lane wrote:
> * Because HeapTupleGetDatum might allocate a new tuple, the wrong thing
> might happen if the caller changes CurrentMemoryContext between
> heap_form_tuple and HeapTupleGetDatum.

It's fscking ugly to allocate memory in a PG_RETURN_... But I don't
really have a better backward compatible idea :(

Greetings,

Andres Freund


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