On Wednesday, January 14, 2026, Ville Voutilainen wrote:

>
> So what if it does? If your function returns an rvalue reference or it
> returns a decltype(auto), that just works,
> and if your function returns a prvalue, that also works without the
> cast, the returned value is subject to auto-elision
> and auto-move.
>


The following source file fails to compile:

extern int &&CalleeFunction(void);

int &&EnclosingFunction(void)
{
 decltype(auto) x = CalleeFunction();
 if ( x ) return x;
}