Validity of cast(void*)size_t.max

[Steven Schveighoffer]

On 2/27/18 9:13 AM, Nordlöw wrote:
> Is `cast(void*)size_t.max` always an invalid address?

You mean, can it point at valid data? Possibly, but likely not. In my 
past as an embedded developer, a lot of times the interrupt vectors are 
stored at the end of address space.


> Is so, could it be used to indicate removed/delete elements in hash 
> tables with open addressing and a key type being either a pointer or class?
>

Why not use null?

-Steve