Re: AW: [Xenomai-help] undefinedreference __xnarch_xchg_called_with_bad_pointer

[Heikki Lindholm <holindho@domain.hid>]

Uh. I guess the compiler isn't killing the *_bad_pointer function as 
dead code when debug is enabled (although it is dead-code.) As a 
work-around, I think, you could just comment the line, where 
*_bad_pointer is called.

-- Heikki Lindholm

Roderik_Wildenburg@domain.hid kirjoitti:
> You are right, but who is somebody ?  The example definitly does not call any xchg-function directly. The only thing I did, was to activate debugging and recompile all the libraries (make clean; configure --debug-enable;  make ) and soon I get this error message when compiling the demo (I don´t get an error message when debugging is disabled) . Amazingly I don´t get this error message when compiling the native examples (ksrc/skins/native/demos) (debug enabled).
> Any ideas ?
> 
> Roderik
> 
> 
> 
> 
>>-----Ursprüngliche Nachricht-----
>>Von: xenomai-help-bounces@domain.hid 
>>[mailto:xenomai-help-bounces@domain.hid] Im Auftrag von Heikki Lindholm
>>Gesendet: Dienstag, 28. Februar 2006 15:48
>>An: Wildenburg, Roderik RAEK3 MRA
>>Cc: xenomai@xenomai.org
>>Betreff: Re: [Xenomai-help] undefinedreference 
>>__xnarch_xchg_called_with_bad_pointer
>>
>>Roderik_Wildenburg@domain.hid kirjoitti:
>>
>>>Dear Gurus,
>>>
>>>I have compiled ppc(!)-xenomai with debug information 
>>
>>(configure --enable-debug), so far so good (compiling of 
>>xenomai itself and it´s libraries, testsuite etc. was successful).  
>>
>>>Buuuut ..., when compiling the vxWorks-demos 
>>
>>(ksrc/skins/vxworks/demos/*.c), I get an error message about 
>>an undefined refernce __xnarch_xchg_called_with_bad_pointer. 
>>I searched for this mysterious function, but could only find 
>>it in asm-powerpc/atomic.h, where it is declared as external 
>>(extern void __xnarch_xchg_called_with_bad_pointer(void);).
>>
>>>Does anybody know, where I can get the implementation of 
>>
>>this function, or what I have to do else to get rid of the 
>>error message ?
>>
>>You might also want to read the comment near the extern 
>>declaration of the function in atomic.h, where it says that 
>>the function is not even intended to be implemented. The 
>>error means somebody called *atomic_xchg with wrong arguments 
>>(or there's something else wrong like inlines not working).
>>
>>-- Heikki Lindholm
>>
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