Re: LLVM 22

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Thomas Munro <thomas(dot)munro(at)gmail(dot)com>
Cc: Devrim Gündüz <devrim(at)gunduz(dot)org>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Matheus Alcantara <matheusssilv97(at)gmail(dot)com>, Anthonin Bonnefoy <anthonin(dot)bonnefoy(at)datadoghq(dot)com>
Subject: Re: LLVM 22
Date: 2026-04-02 04:26:42
Message-ID: 3191452.1775104002@sss.pgh.pa.us
Views: Whole Thread | Raw Message | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

Thomas Munro <thomas(dot)munro(at)gmail(dot)com> writes:
> On Thu, Apr 2, 2026 at 4:31 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> Just out of curiosity: I see you back-patched that all the way,
>> but midge had only been failing on v18 and HEAD. Were you just
>> being defensive, or is there something deeper there?

> It was failing locally for me on all branches.

Ah, thanks for that detail.

> I don't know why midge wasn't failing on 14-17. Could jit be disabled
> somewhere secret? Aarch64 vs amd64, but this issue doesn't seem to be
> architecture related, it's IR-level.

Definitely not arch-specific, because I reproduced it on x86_64.
midge's lack of failure is odd then, but I'm not sure it's worth
expending a lot of brain cells on.

regards, tom lane

In response to

Browse pgsql-hackers by date

  From Date Subject
Next Message Fujii Masao 2026-04-02 05:01:37 Re: Use SIGTERM instead of SIGUSR1 for slotsync worker to exit during promotion?
Previous Message Tom Lane 2026-04-02 04:22:48 Re: Small and unlikely overflow hazard in bms_next_member()