1// RUN: %clang_cc1 -fsyntax-only -verify %s
2
3template<typename T> class A;
4
5extern "C++" {
6  template<typename T> class B;
7}
8
9namespace N {
10  template<typename T> class C;
11}
12
13extern "C" {
14  template<typename T> class D; // expected-error{{templates must have C++ linkage}}
15}
16
17template<class U> class A; // expected-note{{previous template declaration is here}}
18
19template<int N> class A; // expected-error{{template parameter has a different kind in template redeclaration}}
20
21template<int N> class NonTypeTemplateParm;
22
23typedef int INT;
24
25template<INT M> class NonTypeTemplateParm; // expected-note{{previous non-type template parameter with type 'INT' (aka 'int') is here}}
26
27template<long> class NonTypeTemplateParm; // expected-error{{template non-type parameter has a different type 'long' in template redeclaration}}
28
29template<template<typename T> class X> class TemplateTemplateParm;
30
31template<template<class> class Y> class TemplateTemplateParm; // expected-note{{previous template declaration is here}} \
32      // expected-note{{previous template template parameter is here}}
33
34template<typename> class TemplateTemplateParm; // expected-error{{template parameter has a different kind in template redeclaration}}
35
36template<template<typename T, int> class X> class TemplateTemplateParm; // expected-error{{too many template parameters in template template parameter redeclaration}}
37
38template<typename T>
39struct test {}; // expected-note{{previous definition}}
40
41template<typename T>
42struct test : T {}; // expected-error{{redefinition}}
43
44class X {
45public:
46  template<typename T> class C;
47};
48
49void f() {
50  template<typename T> class X; // expected-error{{expression}}
51}
52
53template<typename T> class X1 var; // expected-error{{declared as a template}}
54
55namespace M {
56}
57
58template<typename T> class M::C3 { }; // expected-error{{out-of-line definition of 'C3' does not match any declaration in namespace 'M'}}
59
60namespace PR8001 {
61  template<typename T1>
62  struct Foo {
63    template<typename T2> class Bar;
64    typedef Bar<T1> Baz;
65
66   template<typename T2>
67   struct Bar {
68     Bar() {}
69   };
70  };
71
72  void pr8001() {
73    Foo<int>::Baz x;
74    Foo<int>::Bar<int> y(x);
75  }
76}
77
78namespace rdar9676205 {
79  template <unsigned, class _Tp> class tuple_element;
80
81  template <class _T1, class _T2> class pair;
82
83  template <class _T1, class _T2>
84  class tuple_element<0, pair<_T1, _T2> >
85  {
86    template <class _Tp>
87    struct X
88    {
89      template <class _Up, bool = X<_Up>::value>
90      struct Y
91        : public X<_Up>,
92          public Y<_Up>
93      { };
94    };
95  };
96}
97
98namespace redecl {
99  int A; // expected-note {{here}}
100  template<typename T> struct A; // expected-error {{different kind of symbol}}
101
102  int B; // expected-note {{here}}
103  template<typename T> struct B { // expected-error {{different kind of symbol}}
104  };
105
106  template<typename T> struct F;
107  template<typename T> struct K;
108
109  int G, H; // expected-note {{here}}
110
111  struct S {
112    int C; // expected-note {{here}}
113    template<typename T> struct C; // expected-error {{different kind of symbol}}
114
115    int D; // expected-note {{here}}
116    template<typename T> struct D { // expected-error {{different kind of symbol}}
117    };
118
119    int E;
120    template<typename T> friend struct E { // expected-error {{cannot define a type in a friend}}
121    };
122
123    int F;
124    template<typename T> friend struct F; // ok, redecl::F
125
126    template<typename T> struct G; // ok
127
128    template<typename T> friend struct H; // expected-error {{different kind of symbol}}
129
130    int I, J, K;
131
132    struct U {
133      template<typename T> struct I; // ok
134      template<typename T> struct J { // ok
135      };
136      template<typename T> friend struct K; // ok, redecl::K
137    };
138  };
139}
140