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Date: Fri, 30 Nov 2012 13:33:00 -0000
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Subject: Re: [PATCH] Filter out -fsanitize=address if not in combined tree in libiberty
From: Richard Biener <richard.guenther@gmail.com>
To: "H.J. Lu" <hjl.tools@gmail.com>
Cc: gcc-patches@gcc.gnu.org
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On Fri, Nov 30, 2012 at 2:17 PM, H.J. Lu <hjl.tools@gmail.com> wrote:
> On Fri, Nov 30, 2012 at 12:45 AM, Richard Biener
> <richard.guenther@gmail.com> wrote:
>> On Thu, Nov 29, 2012 at 6:40 PM, H.J. Lu <hongjiu.lu@intel.com> wrote:
>>> Hi,
>>>
>>> When GCC is configured with --with-build-config="bootstrap-asan", all
>>> -flto tests will fail since -fsanitize=address is used to compile host
>>> libiberty, which is used to create liblto_plugin.so, and linker isn't
>>> compiled with -fsanitize=address.  This patch filters out
>>> -fsanitize=address from CFLAGS if we aren't in a combined tree with
>>> binutils.  OK to install?
>>
>> Why not simply ensure that only host _executables_ are sanitized?
>>
>
> Host libiberty library is used to create both host executables and
> host plugins. We don't have separate host libiberty libraries for them.

So don't instrument libiberty then.

Richard.

>
> --
> H.J.