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Re: [PATCH 03/17 v6] Do not stack-protect ifunc resolvers.

From: Mike Frysinger <vapier at gentoo dot org>
To: Nix <nix at esperi dot org dot uk>
Cc: libc-alpha at sourceware dot org
Date: Sat, 9 Apr 2016 23:59:00 -0400
Subject: Re: [PATCH 03/17 v6] Do not stack-protect ifunc resolvers.
Authentication-results: sourceware.org; auth=none
References: <1457882222-22599-1-git-send-email-nix at esperi dot org dot uk> <1457882222-22599-4-git-send-email-nix at esperi dot org dot uk>

On 13 Mar 2016 15:16, Nix wrote:
> When dynamically linking, ifunc resolvers are called before TLS is
> initialized, so they cannot be safely stack-protected.
> 
> We avoid disabling stack-protection on large numbers of files by
> using __attribute__ ((__optimize__ ("-fno-stack-protector")))
> to turn it off just for the resolvers themselves.  (We provide
> the attribute even when statically linking, because we will later
> use it elsewhere too.)

this looks OK to me
-mike

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