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      1 // RUN: %clang_cc1 -std=c++11 -verify %s
      2 
      3 // From core issue 1227.
      4 
      5 template <class T> struct A { using X = typename T::X; }; // expected-error {{no members}}
      6 template <class T> typename T::X f(typename A<T>::X);
      7 template <class T> void f(...) {}
      8 template <class T> auto g(typename A<T>::X) -> typename T::X; // expected-note {{here}} expected-note {{substituting}}
      9 template <class T> void g(...) {}
     10 
     11 void h()
     12 {
     13   f<int>(0); // ok, SFINAE in return type
     14   g<int>(0); // not ok, substitution inside A<int> is a hard error
     15 }
     16