Emplace vs closures

[Lodovico Giaretta via Digitalmars-d]

On Monday, 19 September 2016 at 14:22:16 UTC, Steven 
Schveighoffer wrote:
> On 9/19/16 7:27 AM, Lodovico Giaretta wrote:
>
>> What I'd like to know: is this usage widespread? Should we 
>> forbid it for
>> the sake of security?
>
> No. There is no security concern here. You are dereferencing a 
> null pointer, which is perfectly safe.
>
> -Steve

Ok, wrong wording. I meant "should we forbid it to avoid long 
hours of debugging and unexpected behaviours? One uses emplace 
expecting that it Just Works(TM), which is not true for nested 
things."