Is there an object on given memory address?

[via Digitalmars-d-learn]

On Thursday, 12 February 2015 at 10:04:29 UTC, tcak wrote:
> BTW, I have already got the address of object into a "size_t" 
> type variable and sent it. That is not the problem part.

How reliable do you want? You would have to either "pin the 
object" by registering a root to it to prevent it from being 
moved or freed.

http://dlang.org/phobos/core_memory.html#.GC.addRoot

Or send a hash of the object along with the memory address, then 
query the GC wether the memory is still allocated.