Those obnoxious "mktemp is not safe" warnings

[Richard Henderson]

On Wed, Mar 21, 2001 at 08:49:13PM +0000, Joseph S. Myers wrote:
> Surely a properly typed NULL is needed for variadic functions?  I'd
> presumed that was the point of these definitions.

Distinguishing NULL vs 0 is definitely needed -- the former may
be a 64-bit pointer and the later a 32-bit integer. 

NULL vs NULL_RTX needn't be distinguished on any supported platform.


r~