28 lines · cpp
1// RUN: %clang_cc1 -fsyntax-only -verify=expected,precxx17 %std_cxx98-14 %s2// RUN: %clang_cc1 -fsyntax-only -verify=expected,cxx17 %std_cxx17- %s3template<typename T, 4 int I, 5 template<typename> class TT>6 class A; // precxx17-note 3 {{template is declared here}} \7 cxx17-note 2 {{template is declared here}} \8 cxx17-note {{candidate template ignored: couldn't infer template argument 'T'}} \9 cxx17-note {{implicit deduction guide declared as 'template <typename T, int I, template <typename> class TT> A(A<T, I, TT>) -> A<T, I, TT>'}} \10 cxx17-note {{candidate function template not viable: requires 1 argument, but 0 were provided}} \11 cxx17-note {{implicit deduction guide declared as 'template <typename T, int I, template <typename> class TT> A() -> A<T, I, TT>'}} \12 13template<typename> class X;14 15A<int, 0, X> * a1;16 17A<float, 1, X, double> *a2; // expected-error{{too many template arguments for class template 'A'}}18A<float, 1> *a3; // expected-error{{too few template arguments for class template 'A'}}19A a4; // precxx17-error{{use of class template 'A' requires template arguments}} \20 cxx17-error{{no viable constructor or deduction guide for deduction of template arguments of 'A'}}21 22namespace test0 {23 template <class t> class foo {};24 template <class t> class bar {25 bar(::test0::foo<tee> *ptr) {} // expected-error {{use of undeclared identifier 'tee'}}26 };27}28