DIP77 - Fix unsafe RC pass by 'ref'

[Walter Bright via Digitalmars-d]

On 4/11/2015 2:28 AM, "Marc =?UTF-8?B?U2Now7x0eiI=?= <schuetzm at gmx.net>" wrote:
> It's not acceptable that it happens behind the user's back. Costly operations
> must be explicit.

Don't know of a better solution.