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Date: Thu, 25 Feb 2021 12:27:12 -0800
From: David Goldblatt <>
Subject: Re: Sized deallocation for C

On Thu, Feb 25, 2021 at 12:20 PM enh <> wrote:
> (bionic maintainer here...)
> "Two allocators (TCMalloc and jemalloc) expose this functionality under the name sdallocx. The latter is the system allocator for a number of BSD distributions; the extension is available under this name for the FreeBSD and NetBSD libcs, and some versions of Bionic (the android libc)."
> note that the part about bionic is incorrect. no version of Android that used jemalloc[1] was built without a linker script explicitly declaring our exports, so even though this was in jemalloc at the time Android used jemalloc, it wasn't exported.

My mistake, I'll update in the draft. I also made this mistake with
NetBSD, too -- they don't actually export sdallocx as being available
to end-users, just declare it in a header.

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