Proposal 2: Exceptions and @nogc

[MysticZach via Digitalmars-d]

On Sunday, 9 April 2017 at 20:14:24 UTC, Walter Bright wrote:
> ... a general mechanism for safe refcounting of classes has 
> eluded us.

Regardless of my other comments, which are maybe a little 
uninformed, DIP74 seems pretty good:

https://wiki.dlang.org/DIP74

Manu started a thread asking about it, but that thread dissolved 
into a bitter dispute:

http://forum.dlang.org/post/mailman.1002.1444519548.22025.digitalmars-d@puremagic.com

The only valuable information regarding the question was in this 
post of Andrei's, which did not say very much:

http://forum.dlang.org/post/mvgoa9$1gda$1@digitalmars.com

So what are the corner cases of DIP74? What are the actual 
problems with it?