1 // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s 2 // expected-no-diagnostics 3 4 // If type deduction cannot be done for any P/A pair, or if for any 5 // pair the deduction leads to more than one possible set of deduced 6 // values, or if different pairs yield different deduced values, or if 7 // any template argument remains neither deduced nor explicitly 8 // specified, template argument deduction fails. 9 10 template<typename ...> struct tuple; 11 12 template<typename T, typename U> 13 struct same_tuple { 14 static const bool value = false; 15 }; 16 17 template<typename ...Types1> 18 struct same_tuple<tuple<Types1...>, tuple<Types1...> > { 19 static const bool value = true; 20 }; 21 22 int same_tuple_check1[same_tuple<tuple<int, float>, tuple<int, double>>::value? -1 : 1]; 23 int same_tuple_check2[same_tuple<tuple<float, double>, tuple<float, double>>::value? 1 : -1]; 24 25
