clang/test/SemaTemplate/temp_class_spec_neg.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s
   3 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
   4 template<typename T> struct vector;
   5
   6 // C++ [temp.class.spec]p6:
   7 namespace N {
   8   namespace M {
   9     template<typename T> struct A;
  10   }
  11 }
  12
  13 template<typename T>
  14 struct N::M::A<T*> { };
  15
  16 // C++ [temp.class.spec]p9
  17 //   bullet 1, as amended by DR1315
  18 template <int I, int J> struct A {};
  19 template <int I> struct A<I+5, I*2> {}; // expected-error{{cannot be deduced}} expected-note {{'I'}}
  20 template <int I, int J> struct B {};
  21 template <int I> struct B<I, I> {}; //OK
  22
  23 //   bullet 2
  24 template <class T, T t> struct C {};  // expected-note{{declared here}}
  25 template <class T> struct C<T, 1>; // expected-error{{specializes}}
  26 template <class T, T* t> struct C<T*, t>; // okay
  27
  28 template< int X, int (*array_ptr)[X] > class A2 {}; // expected-note{{here}}
  29 int array[5];
  30 template< int X > class A2<X, &array> { }; // expected-error{{specializes}}
  31
  32 template<typename T, int N, template<typename X> class TT>
  33 struct Test0;
  34
  35 //   bullet 3
  36 template<typename T, int N, template<typename X> class TT>
  37 struct Test0<T, N, TT>; // expected-error{{does not specialize}}
  38
  39 // C++ [temp.class.spec]p10
  40 template<typename T = int, // expected-error{{default template argument}}
  41          int N = 17, // expected-error{{default template argument}}
  42          template<typename X> class TT = ::vector> // expected-error{{default template argument}}
  43   struct Test0<T*, N, TT> { };
  44
  45 template<typename T> struct Test1;
  46 template<typename T, typename U>  // expected-note{{non-deducible}}
  47   struct Test1<T*> { }; // expected-error{{never be used}}