gcc/testsuite/g++.old-deja/g++.pt/crash46.C

// Build don't link:
// Origin: Leon Bottou <leonb@research.att.com>

class AA { protected:
  template <class T> struct BB { T x; BB(const T &x) : x(x) { }; };
  template <class T> struct CC : public BB<T> { CC(const T &x) : BB<T>(x) { };
};
};