Re: [C++ patch] PR 20420

[Paolo Carlini <paolo dot carlini at oracle dot com>]

. thus, in short, what is happening is that, for this testcase:

class B
{
protected:
  enum E { E1, E2, E3 };
};

class D : private B
{
public:
  using B::E;

private:
  enum E { };
};

we parse the new declaration enum E { }; and we reach 
supplement_binding_1 before setting the underlying type of the new 
declaration. The old declaration is fine, would not ICE dependent_type_p.

Paolo.