Re: BUG #18705: Segmentation fault when create brin index on user-defined type.

Tomas Vondra <tomas(at)vondra(dot)me> 于2024年11月14日周四 21:48写道：

> On 11/14/24 03:40, PG Bug reporting form wrote:
> > ...
> >
> > CREATE OPERATOR CLASS sva_special_ops FOR TYPE text using brin AS
> OPERATOR 1
> > <#,
> > OPERATOR 2 <=#, OPERATOR 3 >=#, OPERATOR 4 >#, function 1
> > si_same(text,text);
> > CREATE INDEX idx_special1 ON t_sva using brin(sva sva_special_ops);
> >
>
> I think this is a bit confused about CREATE OPERATOR CLASS. For BRIN
> indexes this expects these 4 functions:
>
> Support Function 1 internal function brin_minmax_opcinfo()
> Support Function 2 internal function brin_minmax_add_value()
> Support Function 3 internal function brin_minmax_consistent()
> Support Function 4 internal function brin_minmax_union()
>
> No wonder it crashes if CREATE OPERATOR CLASS passes si_same() instead
> of brin_minmax_opcinfo.
>

Can we report errors not crash if users pass an unexpected function?

--
Thanks,
Tender Wang