Re: BUG #19493: Assertion failure in pg_plan_advice with EXISTS subquery and DO_NOT_SCAN advice

From: Tender Wang <tndrwang(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Калинин Никита <n(dot)kalinin(at)postgrespro(dot)ru>, Michael Paquier <michael(at)paquier(dot)xyz>, pgsql-bugs(at)lists(dot)postgresql(dot)org, Pierre Forstmann <pierre(dot)forstmann(at)gmail(dot)com>
Subject: Re: BUG #19493: Assertion failure in pg_plan_advice with EXISTS subquery and DO_NOT_SCAN advice
Date: 2026-05-27 01:17:39
Message-ID: CAHewXNn7q9Bm=i=ZBMJxUsmFhavfdxwbwVzdhsV9uXZOk584HQ@mail.gmail.com
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Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> 于2026年5月27日周三 09:08写道：
>
> =?UTF-8?B?0JrQsNC70LjQvdC40L0g0J3QuNC60LjRgtCw?= <n(dot)kalinin(at)postgrespro(dot)ru> writes:
> > Could this be related to GCC? I'm using GCC 16.1.1 and I can reproduce the crash with that version.
>
> Maybe. Does it still fail if you set the optimization level to -O0 ?
I can reproduce this crash on my machine with CFLAGS="-O0 -g3". And my
GCC version is 11.4.0

--
Thanks,
Tender Wang

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