Re: Must a C state transition function use palloc on the returned value?

Tom Lane writes:
 > Dirk Lutzebaeck <lutzeb@aeccom.com> writes:
 > > I'm defining a new aggregate using a C transition function. It is of
 > > type TEXT, so the C function gets pointers (*text) to the internal-state1 and
 > > next-data-item parameters. 
 > 
 > > Question is if the returning value of type *text must be palloc'ed or
 > > can be just taken from the input parameters.
 > 
 > The result must be a fresh palloc, since both inputs will be pfreed the
 > moment you return.  7.1 will copy the result for you if you are so
 > incautious as to try to return an input, but 7.0.* just falls over :-(

Thanks! It works now...

Dirk