Bug in _VFPRINTF_R

[Eric Blake]

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According to Samuel Vinson on 9/15/2007 6:34 AM:
> I'm sorry Eric, but I gave you a specific example :
>    printf("%.*s\n",len,(char *)NULL) /* len = 0 */
> 
> and not printf("%s", (char *)NULL)

OK, I see what you are complaining about (this was the first time you
explicitly mentioned the case where precision is less than 6).  Indeed, as
long as newlib is providing an extension for a replacement string for
NULL, it should take precision into account.  Jeff, okay to apply this
patch?  [However, I still maintain that your code has a bug for expecting
any sane behavior when passing a NULL argument for %s.]

2007-09-15  Eric Blake  <ebb9@byu.net>

	* libc/stdio/vfprintf.c (_VFPRINTF_R): Take precision into account
	for %s on NULL.  Skip NULL check when optimizing for size.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9@byu.net
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