Re: LLVM JIT: any JIT-compiled query crashes (SIGILL) on a libLLVM 19 + ASAN build

From: Henson Choi <assam258(at)gmail(dot)com>
To: Andres Freund <andres(at)anarazel(dot)de>, Tatsuo Ishii <ishii(at)postgresql(dot)org>
Cc: Tomas Vondra <tomas(at)vondra(dot)me>, Noah Misch <noah(at)leadboat(dot)com>, Matheus Alcantara <matheusssilv97(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, jian he <jian(dot)universality(at)gmail(dot)com>
Subject: Re: LLVM JIT: any JIT-compiled query crashes (SIGILL) on a libLLVM 19 + ASAN build
Date: 2026-11-08 14:57:10
Message-ID: CAAAe_zCVuAskr8LRL-Xajvwb4Xo5MtJYOiSPi-kkceKJrzqykg@mail.gmail.com
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Hi Andres,

> Because of a negative interaction with an upcoming fix, I plan to
> apply Henson's 0004 to 17 to master.

Thanks for pushing it (0607aa61090).

With it in, the CI for the Row Pattern Recognition entry [1] is
green again. Its Linux - Meson (64-bit) task had been failing with
this crash since you first pointed it out in June [2], and the first
CFBot run on the new master (d0a4f66217c) passed every task.

Thanks also to Greg for testing v4.

[1] https://commitfest.postgresql.org/patch/4460/
[2]
https://www.postgresql.org/message-id/p7r5bekdbl2zcazid7agvfo2nfnq5bim2a5jkckqygld32n325%40fctfp6ou6qnb

Best regards,
Henson

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