Rvalue references - The resolution

[Steven Schveighoffer]

On Sun, 26 May 2013 18:56:58 -0400, Timothee Cour  
<thelastmammoth at gmail.com> wrote:

>> In fact it's also possible to know that these don't return a reference  
>> to
> their parameter.
>
> Watch out for this:
> Struct S {double x;}
> ref double foo(ref S a){return a.x;}

That case is covered by the proposal.  It incurs a runtime check (worst  
case, best case it simply doesn't compile).

-Steve