This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: [PATCH] PR target/65248: [5 Regression] Copy relocation in PIE against protected symbol
- From: Uros Bizjak <ubizjak at gmail dot com>
- To: "H.J. Lu" <hjl dot tools at gmail dot com>
- Cc: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, Jakub Jelinek <jakub at redhat dot com>
- Date: Mon, 2 Mar 2015 08:48:47 +0100
- Subject: Re: [PATCH] PR target/65248: [5 Regression] Copy relocation in PIE against protected symbol
- Authentication-results: sourceware.org; auth=none
- References: <20150228164223 dot GA22402 at gmail dot com>
On Sat, Feb 28, 2015 at 5:42 PM, H.J. Lu <hjl.tools@gmail.com> wrote:
> Ue copy relocation in PIE improves performance. But copy relocation
> can't be used to access protected symbols defined in shared libaries
> and linker in binutils 2.26 enforces doesn't allow it. GCC doesn't
> know if an external definition is protected or not. This option adds
> -mcopyreloc-in-pie to give user an option to turn it off to avoid problem
> at link-time. OK for trunk?
If the option does not work universally for all cases, then the
default should be off.
Uros.