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Date:      Fri, 18 Nov 2016 15:20:26 -0500
From:      Ed Maste <emaste@freebsd.org>
To:        Paul Eggert <eggert@cs.ucla.edu>
Cc:        Ashish SHUKLA <ashish.is@lostca.se>,  "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>, 24892@debbugs.gnu.org
Subject:   Re: bug#24892: {s, }brk removed from FreeBSD 11.x and later, arm64 architecture
Message-ID:  <CAPyFy2AL_OZWYpp%2BtiLSro_3WK1-H8Pdjy4-ZhUQChMQqageUw@mail.gmail.com>
In-Reply-To: <5ec481c4-41e1-c7dd-433d-f533653b132f@cs.ucla.edu>
References:  <82a03552-8f33-2dbe-6bb5-54f649b29db7@cs.ucla.edu> <86vavxs2cn.fsf@members.fsf.org> <5adee8d9-8f08-9536-a95f-ae64719d6a0f@cs.ucla.edu> <mvminrxc7f2.fsf@hawking.suse.de> <c9396165-da2e-3c41-ec2b-070ce9c885bb@cs.ucla.edu> <mvmtwbfachr.fsf@hawking.suse.de> <40f8df50-b431-1ebd-221c-df2aa453aa81@cs.ucla.edu> <mvmfumz8e2u.fsf@hawking.suse.de> <06ee71fd-1a64-d32b-862e-c725807aef4e@cs.ucla.edu> <mvm60nv8cky.fsf@hawking.suse.de> <876cf047-82fb-f08c-bbb3-024206f6fabd@cs.ucla.edu> <83twb6dnkm.fsf@gnu.org> <8637ipm0nb.fsf@lostca.se> <5ec481c4-41e1-c7dd-433d-f533653b132f@cs.ucla.edu>

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On 18 November 2016 at 11:21, Paul Eggert <eggert@cs.ucla.edu> wrote:
>
> In the meantime we respectfully request that sbrk functionality be kept in
> FreeBSD 11.x arm64 for a while. It is fine to mark it as deprecated or
> obsolete, or even rename it, but please do not remove the functionality
> entirely.

Hi Paul,

I want to clarify one point: arm64 support was first available in a
release in FreeBSD 11.0, without sbrk, and sbrk never existed on the
stable/11 branch.

It's important for us that emacs works on FreeBSD (including
FreeBSD/arm64) and there are folks willing to help make that happen. I
had a quick look at emacs' source, and it seems there's an
implementation that allocates memory out of a large array in .bss used
for some platforms - could we make use of that here?



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