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From: Thomas Munro <[email protected]>
To: PostgreSQL Hackers <[email protected]>
Subject: Re: LLVM 22
Date: Sun, 4 Jan 2026 18:02:00 +1300
Message-ID: <CA+hUKGJv+QUOy8yOHe_0VfRGTSrHaCvo0xZG-1JGTqBurcPkOw@mail.gmail.com> (raw)
In-Reply-To: <CA+hUKGJTumad75o8Zao-LFseEbt=enbUFCM7LZVV=c8yg2i7dg@mail.gmail.com>
References: <CA+hUKGJTumad75o8Zao-LFseEbt=enbUFCM7LZVV=c8yg2i7dg@mail.gmail.com>

On Sat, Jan 3, 2026 at 3:02 PM Thomas Munro <[email protected]> wrote:
> 1.  We won't need our local llvm::backport::SectionMemoryManager for
> LLVM 22, so it will be nice to draw a line under that messy business.
> See commit message for details.

While that's true, there is a problem with the patch I posted:
"ReserveAlloc" is not enabled when called from C.  I can't actually
reproduce the issue locally due to lack of RAM connected to an ARM
CPU, or I'd have noticed that...  I'll attempt to do something about
that upstream[1], let's see...  if not, we can still use the new
in-tree SectionMemoryManager, but we'll still need some C++ glue code.

[1] https://github.com/llvm/llvm-project/issues/174305

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