Proposal 2: Exceptions and @nogc

[Dukc via Digitalmars-d]

This idea could be generalized:

-DRuntime would add an interface "ReferenceCountable".
-Throwable would implement it.
-When a new expression of ReferenceCountable type is used to 
assign to a scope variable or argument, it's guaranteed to be 
@nogc.
-Non-scoped objects, ReferenceCountable or no, are assumed to not 
be reference counted.

I wonder it this is what Jack Stouffer was thinking?