1 // RUN: %clang_cc1 -fsyntax-only -verify %s
2 
3 template<typename T> class A;
4 
5 extern "C++" {
6   template<typename T> class B;
7 }
8 
9 namespace N {
10   template<typename T> class C;
11 }
12 
13 extern "C" {
14   template<typename T> class D; // expected-error{{templates must have C++ linkage}}
15 }
16 
17 template<class U> class A; // expected-note{{previous template declaration is here}}
18 
19 template<int N> class A; // expected-error{{template parameter has a different kind in template redeclaration}}
20 
21 template<int N> class NonTypeTemplateParm;
22 
23 typedef int INT;
24 
25 template<INT M> class NonTypeTemplateParm; // expected-note{{previous non-type template parameter with type 'INT' (aka 'int') is here}}
26 
27 template<long> class NonTypeTemplateParm; // expected-error{{template non-type parameter has a different type 'long' in template redeclaration}}
28 
29 template<template<typename T> class X> class TemplateTemplateParm;
30 
31 template<template<class> class Y> class TemplateTemplateParm; // expected-note{{previous template declaration is here}} \
32       // expected-note{{previous template template parameter is here}}
33 
34 template<typename> class TemplateTemplateParm; // expected-error{{template parameter has a different kind in template redeclaration}}
35 
36 template<template<typename T, int> class X> class TemplateTemplateParm; // expected-error{{too many template parameters in template template parameter redeclaration}}
37 
38 template<typename T>
39 struct test {}; // expected-note{{previous definition}}
40 
41 template<typename T>
42 struct test : T {}; // expected-error{{redefinition}}
43 
44 class X {
45 public:
46   template<typename T> class C;
47 };
48 
49 void f() {
50   template<typename T> class X; // expected-error{{expression}}
51 }
52 
53 template<typename T> class X1 var; // expected-error{{declared as a template}}
54 
55 namespace M {
56 }
57 
58 template<typename T> class M::C3 { }; // expected-error{{out-of-line definition of 'C3' does not match any declaration in namespace 'M'}}
59 
60 namespace 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