[boost] Re: boost::function & gcc 2.96 problem

From: Gennaro Prota (gennaro_prota_at_[hidden])
Date: 2004-02-12 18:27:04

On Thu, 12 Feb 2004 18:02:13 -0500, Douglas Gregor <gregod_at_[hidden]>
wrote:

>Shortly after this message this message hit the Boost list (and before I saw 
>it), I received this helpful little note from a friend:
>
>	"You might want to arm yourself with 5.2.10/8 and 4.10/1."
>
>He's right, I think. 0 is the null pointer constant, which is a null pointer 
>value,

No. It becomes a null pointer value *if* converted to a pointer type.
5.2.10/8 is telling you can do this:

  0 -> pointer type -> reinterpret_cast<void*>

while you are doing, directly

  0 -> reinterpret_cast<void*>

This way, you are converting an int.

>[...]
>But if you don't agree, I'm just as happy replacing it with a static_cast 
>instead of starting a long discussion. It's just not worth it :)

Yes :)

Genny.