HotSpot doesn't use NULL

[Kim Barrett]

On 11/26/24 8:37 AM, Julian Waters wrote:
> Both VC and gcc support pragmas that force disable all uses of an 
> identifier whatsoever, deprecated for VC and poison for gcc. This 
> would probably depend on whether you want to forbid null everywhere or 
> whether you need some places where NULL has to be used

This fails the "makes it unusable seems problematic because it
might affect non-HotSpot code." criteria.