Apparently unsigned types really are necessary

[Kagamin]

On Sunday, 22 January 2012 at 22:17:10 UTC, Marco Leise wrote:
>> If you ignore type limits, you're asking for trouble. Imagine 
>> you have 2 gigs of ram and 3 gig pagefile on 32-bit OS. What 
>> is the total size of available memory?
>
> I can use up to 4GB of that in the address space of my 
> application - the value range of a uint, qed

With PAE it's possible to access more than that. AFAIK some 
web-servers do it.