clang/test/SemaTemplate/instantiation-order.cpp

   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}}
   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 // expected-note {{substituting}}
  15 }