Re: remove_useless_joins vs. bug #19560

From: Richard Guo <guofenglinux(at)gmail(dot)com>
To: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Tender Wang <tndrwang(at)gmail(dot)com>, Thom Brown <thom(at)linux(dot)com>, Jacob Brazeal <jacob(dot)brazeal(at)gmail(dot)com>, pgsql-hackers(at)lists(dot)postgresql(dot)org
Subject: Re: remove_useless_joins vs. bug #19560
Date: 2026-09-16 00:38:52
Message-ID: CAMbWs4_pf3+4-fRkUnM4dOpR4e+p2B1LGs8cNTVz=_qoOORrnQ@mail.gmail.com
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On Wed, Sep 16, 2026 at 1:28 AM Fujii Masao <masao(dot)fujii(at)gmail(dot)com> wrote:
> On Mon, Sep 14, 2026 at 2:10 PM Richard Guo <guofenglinux(at)gmail(dot)com> wrote:
> > Thanks! Pushed and back-patched to v16.

> I used Codex to review this commit, and it reported two cases that could
> cause assertion failures. I confirmed that both cases actually cause
> assertion failures:

Thanks for the report! I expected some fallout from this commit,
though I didn't expect them quite so soon :-)

I'll take a look.

- Richard

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