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Date: Mon, 11 Jul 2011 20:43:04 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai-core] Problems with gcc 4.6.0 (rt_task_shadow fails
 with	ENOSYS)
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To: Anders Blomdell <anders.blomdell@domain.hid>
Cc: xenomai@xenomai.org

On 07/07/2011 11:47 PM, Anders Blomdell wrote:
> When compiling kernel 2.6.37.3 and xenomai 2.5.6 with "gcc version 4.6.0 
> 20110530 (Red Hat 4.6.0-9) (GCC)", programs fail with -ENOSYS in 
> rt_task_shadow. If compiled with "gcc version 4.5.1 20100924 (Red Hat 
> 4.5.1-4) (GCC)" everything works as expected.

I think it is due to the modifications of syscall.h I made to implement
pseudo-signals handling, which implementation was never finished, and
removed in xenomai-head. Could you try xenomai-head to see if you get
the failure? I tried backporting it, but the code evolved too much in
both repositories, the backport needs to spend some time on it, so, I
would like to know whether it is really needed.

-- 
                                                                Gilles.