[klibc] Register parameters are unsafe with gcc 3.3.2

[H. Peter Anvin]

Alexander E. Patrakov wrote:
> 
> Other shell redirections don't work either. When I comment out the 
> following line in klibc/klibc/arch/i386/MCONFIG:
> 
> # REGPARM_OPT := -mregparm=3 -DREGPARM
> 
> and rebuild klibc, everything works. Please take some action against 
> this error, e.g. update the README file.
> 

It's not a gcc problem, it seems to be a bug in the klibc open() 
function.  open() is a problematic function since it's technically 
defined as being varadic, and with regparm varadic and non-varadic 
functions have calling conventions.

Thus, it's either a klibc or an ash problem, so it's in my court.  I'll 
take care of it.

	-hpa