var args in kernel?

[Gerd Knorr]

On Fri, Nov 19, 2004 at 02:41:46PM -0700, Kevin P. Fleming wrote:
> Gerd Knorr wrote:
> >Yet another kobject bug.  It uses the varargs list twice in a illegal
> >way.  That doesn't harm on i386 by pure luck, but blows things up on
> >amd64 machines.  The patch below fixes it.
> 
> Is this safe? The normal glibc varargs implementation says you can't 
> even call va_start on the same args list twice, you have to use va_copy 
> to make a clone and then call va_start on that, _before_ you ever call 
> va_start the first time.

Hmm, maybe.  I'm not sure who actually implements the varargs (gcc?
Or glibc/kernel?) and whenever the above applies to the kernel as well
or not ...

Cc'ing the kernel list for comments.

  Gerd

-- 
#define printk(args...) fprintf(stderr, ## args)
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