From: Rich Felker <dalias@aerifal.cx>
To: musl@lists.openwall.com
Subject: Re: [PATCH 2/3] Have different definitions of __pthread_tsd_main agree in size
Date: Mon, 11 Feb 2013 16:50:25 -0500 [thread overview]
Message-ID: <20130211215025.GV20323@brightrain.aerifal.cx> (raw)
In-Reply-To: <20130211214750.GT20323@brightrain.aerifal.cx>
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
prev parent reply other threads:[~2013-02-11 21:50 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-10 22:32 Jens Gustedt
2013-02-11 0:31 ` Rich Felker
2013-02-11 7:40 ` Jens Gustedt
2013-02-11 11:22 ` Szabolcs Nagy
2013-02-11 12:08 ` Szabolcs Nagy
2013-02-11 12:51 ` Jens Gustedt
2013-02-11 13:09 ` Szabolcs Nagy
2013-02-11 13:38 ` Jens Gustedt
2013-02-11 13:44 ` Rich Felker
2013-02-11 14:07 ` Jens Gustedt
2013-02-11 14:39 ` Szabolcs Nagy
2013-02-11 16:30 ` Jens Gustedt
2013-02-11 17:08 ` Szabolcs Nagy
2013-02-11 17:21 ` Jens Gustedt
2013-02-11 21:49 ` Rich Felker
2013-02-11 21:47 ` Rich Felker
2013-02-11 21:50 ` Rich Felker [this message]
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