Why did D leave the programming language shootout and will it return?

[Walter Bright]

On 9/20/2011 4:58 PM, Timon Gehr wrote:
> On 09/21/2011 01:37 AM, Walter Bright wrote:
>> 1. A moving garbage collector becomes practical.
>>
>
> And this is a requirement for highly efficient GC. How does it cope with
> pointers that point to memory not allocated on the GC heap though?

No problem. Only GC references get moved and hence updated.

> Would the
> overhead of tracking references just be invasive on parts of the code that uses
> manual memory management if a program uses a moving GC?

You'll still have to 'register' those blocks of memory with the GC if they hold 
any pointers into it.