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Date: Fri, 12 Aug 2011 12:11:14 +0200 (CEST)
From: "Gilles Chanteperdrix" <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai-core] gcc-4.6 issue
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To: Daniele Nicolodi <daniele@domain.hid>
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Daniele Nicolodi wrote:
> On 12/08/11 10:18, Daniele Nicolodi wrote:
>> On 12/08/11 01:18, Gilles Chanteperdrix wrote:
>>> The following patch seems to do the trick. It makes the assumption that
>>> when compiling with -fomit-frame-pointer, we have one more register, so
>>> the "R" constraint will always be able to avoid choosing eax, and eax
>>> will be free for the muxcode, so that the compiler will not choose the
>>> "m" alternative.
>>
>> It works, indeed. Thank you Gilles.
>
> I've spoken to early. The patch does not work for the posix skin.
> Posix skin services return "function not implemented" errors when
> xenomai user space is compiled with the patch and gcc-4.6, they work
> just fine when compiled with gcc-4.4 (without the patch).

Not really surprising. Then just compile with -fno-omit-frame-pointer.

-- 
                    Gilles.