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Re: [PATCH 1/5] Use protected visibility for _rtld_global and _rtld_global_ro

From: Mike Frysinger <vapier at gentoo dot org>
To: libc-alpha at sourceware dot org
Cc: Peter Collingbourne <pcc at google dot com>, Richard Henderson <rth at twiddle dot net>
Date: Tue, 14 May 2013 14:17:19 -0400
Subject: Re: [PATCH 1/5] Use protected visibility for _rtld_global and _rtld_global_ro
References: <1368459372-2415-1-git-send-email-pcc at google dot com> <51911545 dot 6060907 at twiddle dot net> <CAMn1gO4NgTqacgt7wMSjh9KuRgDjQ14Thp9JdpuOKtH+K0t1FQ at mail dot gmail dot com>

On Monday 13 May 2013 13:48:24 Peter Collingbourne wrote:
> On Mon, May 13, 2013 at 6:31 PM, Richard Henderson <rth@twiddle.net> wrote:
> > On 05/13/2013 08:36 AM, Peter Collingbourne wrote:
> >> _rtld_local was created back in 2002 (see commit 0d01dac), and the
> >> protected attribute removed on _rtld_global, for an undocumented
> >> reason...
> > 
> > Protected visibility requires more runtime overhead in the dynamic
> > linker.
> 
> Ah.  Now that I've read Ian's article (properly) I see what the issue is.
> I'll try a few things and also see if this can be dealt with on the LLVM
> side.

post a patch to add a comment as to why things are the way they are ? :)
-mike

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References:
- [PATCH 0/5] Using LLVM (DragonEgg) to compile glibc
  - From: Peter Collingbourne
- Re: [PATCH 1/5] Use protected visibility for _rtld_global and _rtld_global_ro
  - From: Richard Henderson
- Re: [PATCH 1/5] Use protected visibility for _rtld_global and _rtld_global_ro
  - From: Peter Collingbourne

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