default arguments for const ref parameters in extern C++ functions

[60rntogo]

On Monday, 14 September 2020 at 12:44:34 UTC, 60rntogo wrote:
> ---
> struct Foo
> {
>   int x;
> }
>
> extern(C++) void fun(const ref Foo foo = Foo(1));
> ---

I suppose this should have been:

---
extern(C++):

struct Foo
{
   int x;
}

void fun(const ref Foo foo = Foo(1));
---

Not that it changes the question in any way.