Re: Fix NO_OOM handling in MemoryContextAllocAligned

From: Chao Li <li(dot)evan(dot)chao(at)gmail(dot)com>
To: David Rowley <dgrowleyml(at)gmail(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Fix NO_OOM handling in MemoryContextAllocAligned
Date: 2026-08-04 04:45:35
Message-ID: FB315383-8BEF-4478-8C7A-C6D78EE27707@gmail.com
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> On Aug 4, 2026, at 12:11, David Rowley <dgrowleyml(at)gmail(dot)com> wrote:
>
> On Mon, 3 Aug 2026 at 20:50, Chao Li <li(dot)evan(dot)chao(at)gmail(dot)com> wrote:
>> MemoryContextAllocAligned() calls MemoryContextAllocExtended() and passes “flags" with only MCXT_ALLOC_ZERO removed. When “flags" includes MCXT_ALLOC_NO_OOM, MemoryContextAllocExtended() may return NULL, but MemoryContextAllocAligned() doesn't handle the returned NULL, which may
>> lead to a crash.
>
> Thanks. Pushed.
>
> David

Thanks for pushing.

Best regards,
--
Chao Li (Evan)
HighGo Software Co., Ltd.
https://www.highgo.com/

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