ref is unsafe

[Rob T]

On Thursday, 3 January 2013 at 23:06:03 UTC, David Nadlinger 
wrote:
>> The problem with that idea, is that a ref return with no 
>> arguments may call another ref return that returns something 
>> that escapes the scope it was created in. If the source code 
>> is not available, then there's no way for the compiler to 
>> determine that this is going on.
>
> I am not quite sure what you are trying to say. If the compiler 
> never sees the source code for the functions, then codegen is 
> going to be difficult. ;)
>

See my post directly above this one that has an example.

--rt