Re: BUG #18657: Using JSON_OBJECTAGG with volatile function leads to segfault

Amit Langote <amitlangote09@gmail.com> 于2024年10月16日周三 17:06写道：

> On Wed, Oct 16, 2024 at 5:20 PM Tender Wang <tndrwang@gmail.com> wrote:
> > Amit Langote <amitlangote09@gmail.com> 于2024年10月16日周三 08:35写道：
> >>
> >> On Wed, Oct 16, 2024 at 9:19 AM Michael Paquier <michael@paquier.xyz>
> wrote:
> >> > On Tue, Oct 15, 2024 at 11:00:01AM +0000, PG Bug reporting form wrote:
> >> > > First bad commit for this anomaly is b6e1157e7.
> >> >
> >> > Amit, any thoughts?
> >>
> >> Will look into it, thanks.
> > Hi,
> >
> > I debug this issue, and I find that:
> > after  b6e1157e7,  we shouldn't walk JsonValueExpr.raw_expr in
> expression_tree_walker_impl(), which
> > is called in preprocess_aggrefs().
> >
> > I try to above solution, no crashed again.
>
> Thanks for the analysis.  That is my conclusion as well.
>
> Attached a patch.
>
>
Yeah, yours look more better than mine.  And the typo in my attached patch,
is that right?
JSON_OBJECT() should be JSON_OBJECTAGG()  near  transformJsonObjectAgg()

-- 
Thanks,
Tender Wang