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Message-ID: <20130211215025.GV20323@brightrain.aerifal.cx>
Date: Mon, 11 Feb 2013 16:50:25 -0500
From: Rich Felker <dalias@...ifal.cx>
To: musl@...ts.openwall.com
Subject: Re: [PATCH 2/3] Have different definitions of
__pthread_tsd_main agree in size
On Mon, Feb 11, 2013 at 04:47:50PM -0500, Rich Felker wrote:
> With that said, I don't see any reason this behavior is _desirable_ or
> beneficial, so I'm fine with changing it and always using __environ
> internally. We could even add a visibility attribute on it so that
> GOT/PC-relative accesses get used in compilers which support
> visibility, instead of the more expensive accesses through the GOT.
Actually this is wrong. __environ might be relocated to the main
executable via copy relocations, so it can't be accessed GOT-relative.
Giving it protected visibility would actually break this, because of
bugs in GCC...
Rich
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