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Date: Thu, 15 Feb 2024 10:18:47 +0100
From: Szabolcs Nagy <>
To: enh <>
Cc: Rich Felker <>,
	William Roberts <>,
Subject: Re: PAC/BTI Support on aarch64

* enh <> [2024-02-14 16:22:05 -0800]:
> On Wed, Feb 14, 2024 at 4:03 PM Szabolcs Nagy <> wrote:
> > i.e. no equivalent to -Wa,--noexecstack we use for GNU_STACK
> > (this was an oversight, llvm added an option, binutils gas has none).
> what's the option? (since Android only supports llvm, that might be
> worth considering as a slight cleanup for us...)


> > as far as i know openssl is the reason android does not enable pac:
> > they added the hint instructions incorrectly at first so there are
> > binaries that fail if the hw enables pac.
> that was one reason why "android does not enable pac" _by default in
> the android target triples for app developers_, yes --- though i think
> we're at the point where we think we should flip that default (not
> least because the number of users whose devices would actually
> _benefit_ from the extra instructions is a lot larger now!):

i see

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