Re: [C++ Patch] for c++/23211

[Jason Merrill]

This seems problematic to me; it could be that a dependent scope ends up 
matching a non-dependent base in the end, i.e.

struct A { int x; };
template <class T>
struct B: A
{
  using T::x;
};

B<A> b;

this code is silly, but I think well-formed, and that your patch will 
break it.

I think that just changing dependent_type_p (scope) to dependent_scope_p 
(scope) will have the desired effect on this testcase.

Jason