On Sun, Dec 16 2018 at 14:36:26 EET Bernd Edlinger wrote:
> Hi,
> 
> if I understood that right, then clobbering sp is and has always been
> ignored.
>
> If that is right, then I would much prefer a warning, that says exactly
> that, because that would also help to understand why removing that clobber
> statement is safe even for old gcc versions.
> 
> Since your patch did not actually change the handling of the PIC register,
> that one should of course stay an error.

Thank you. Looks like general consensus is to have a warning. See attached 
patch that switches the error to a warning.

Regards,
Dimitar