On Mon, 5 Feb 2018 16:22:19 +0100
Adam Borowski <kilob...@angband.pl> wrote:

> My change touches %px only, where your concern doesn't apply.
> 
> You're right, though, when it comes to %pK:
>     printk("%%pK: %pK, %%px: %px\n", 0, 0);
> says
>     %pK: 00000000ba8bdc0a, %px: 0000000000000000
> 
> So what should we do?  Avoid hashing 0?  Print a special value?

My personal opinion is that NULL should stay NULL and not be hashed.
What security issue could be leaked by a NULL? I'm not a security
person, that's a real question.

-- Steve

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