Re: BUG #19484: Segmentation fault triggered by FDW

Fujita-san,

On Thu, Jun 11, 2026 at 7:44 PM Amit Langote <amitlangote09@gmail.com> wrote:
>
> Hi Fujita-san,
>
> On Thu, Jun 11, 2026 at 7:41 PM Etsuro Fujita <etsuro.fujita@gmail.com> wrote:
> >
> > Amit-san,
> >
> > On Wed, Jun 10, 2026 at 10:27 PM Amit Langote <amitlangote09@gmail.com> wrote:
> > > Before committing it, I'd like to wait briefly to see if Fujita-san
> > > has any thoughts on the FDW-side concerns, since he has already chimed
> > > in on the thread.
> >
> > I'll review the patch as early as I can next week, but if you want to
> > commit it quickly, please go ahead.
>
> No problem; I'll hold off.

A small clarification on this one: the patch makes no changes to
postgres_fdw code, only adds a regression test. The bug, which I
introduced, is in how nodeModifyTable.c supplies fdw_private from the
pruned/validated fdwPrivLists in ModifyTableState rather than the
original list in ModifyTable, so the postgres_fdw side itself is
unchanged. The substantive change is the executor re-indexing.

Still holding off on committing per our exchange, but no rush given
you may want to prioritize the v19 open items. Happy to go ahead
whenever, or wait for your comments.

-- 
Thanks, Amit Langote