On 09/03/2016 08:59 PM, Tom Lane wrote:
Andreas Seltenreich <seltenre...@gmx.de> writes:
Digging in the coredumps, it looks like set_var_from_num() is invoked on
an uninitialized NumericVar.  Sample gdb session below.

Hm, yeah, looks like numeric_poly_deserialize is missing a required
init_var() step.  Slightly astonishing that this got through even
minimal testing.

For the archives' sake: I could not reproduce this at default settings,
because the aggregate calls don't get parallelized.  But it fails fairly
quickly with
set parallel_tuple_cost = 0;
set parallel_setup_cost = 0;
set min_parallel_relation_size = 0;

Thanks for the report!

Thanks for fixing this so quickly. For the record, I did test parallelization at one point, but maybe it was with an older patch version or I screwed up something in the tests - otherwise I clearly would've hit that.

- Heikki

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