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Re: Revert: Remove useless self-joins *and* -DREALLOCATE_BITMAPSETS make server crash, regress test fail. - Mailing list pgsql-hackers

From Tom Lane
Subject Re: Revert: Remove useless self-joins *and* -DREALLOCATE_BITMAPSETS make server crash, regress test fail.
Date
Msg-id 3972895.1715059735@sss.pgh.pa.us
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In response to Re: Revert: Remove useless self-joins *and* -DREALLOCATE_BITMAPSETS make server crash, regress test fail.  (David Rowley <dgrowleyml@gmail.com>)
Responses Re: Revert: Remove useless self-joins *and* -DREALLOCATE_BITMAPSETS make server crash, regress test fail.
Re: Revert: Remove useless self-joins *and* -DREALLOCATE_BITMAPSETS make server crash, regress test fail.
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David Rowley <dgrowleyml@gmail.com> writes:
> Yeah, before the revert, that did:
> -       sjinf->syn_lefthand = replace_relid(sjinf->syn_lefthand, relid, subst);
> That replace code seems to have always done a bms_copy()

Hmm, not always; see e0477837c.

What I'm trying to figure out here is whether we have a live bug
in this area in released branches; and if so, why we've not seen
reports of that.

            regards, tom lane

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