GC API: What can change for precise scanning?

[Sean Kelly]

On Apr 18, 2012, at 4:02 PM, deadalnix wrote:

> Le 18/04/2012 20:53, Sean Kelly a écrit :
>> On Apr 18, 2012, at 2:56 AM, deadalnix wrote:
>>> 
>>> I think you certainly can remove all indirection. Additionally, I wonder why most of theses functions are extern(C).
>> 
>> So the GC implementation is opaque and the GC can therefore be chosen at link-time.  Similar to how the compiler runtime code hides behind a raft of extern© functions.
> 
> I know, but this is now impossible anyway because of the modification of TypeInfo anyway.

I'm not sure I follow.  Are you saying the change breaks having the GC behind extern C functions?  How?