test/SemaTemplate/temp_class_spec_neg.cpp

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