GSoC 2016 - Precise GC

[Leandro Lucarella via Digitalmars-d-announce]

On Tuesday, 3 May 2016 at 18:15:20 UTC, Jeremy DeHaan wrote:
> Not sure if it is something I can get to in the course of my 
> project though. Scanning only unions conservatively is still 
> pretty good.

And the stack, and the CPU registers, but yeah, it should be a 
minority.