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
5namespace PR8965 {
6  template<typename T>
7  struct X {
8    typedef int type;
9
10    T field; // expected-note{{in instantiation of member class}}
11  };
12
13  template<typename T>
14  struct Y {
15    struct Inner;
16
17    typedef typename X<Inner>::type // expected-note{{in instantiation of template class}}
18      type; // expected-note{{not-yet-instantiated member is declared here}}
19
20    struct Inner {
21      typedef type field; // expected-error{{no member 'type' in 'PR8965::Y<int>'; it has not yet been instantiated}}
22    };
23  };
24
25  Y<int> y; // expected-note{{in instantiation of template class}}
26}
27
28template<typename T>
29class X {
30public:
31  struct C { T &foo(); };
32
33  struct D {
34    struct E { T &bar(); }; // expected-error{{cannot form a reference to 'void'}}
35    struct F; // expected-note{{member is declared here}}
36  };
37};
38
39X<int>::C *c1;
40X<float>::C *c2;
41
42X<int>::X *xi; // expected-error{{qualified reference to 'X' is a constructor name rather than a type wherever a constructor can be declared}}
43X<float>::X *xf; // expected-error{{qualified reference to 'X' is a constructor name rather than a type wherever a constructor can be declared}}
44
45void test_naming() {
46  c1 = c2; // expected-error{{assigning to 'X<int>::C *' from incompatible type 'X<float>::C *'}}
47  xi = xf;  // expected-error{{assigning to 'X<int>::X<int> *' from incompatible type 'X<float>::X<float> *'}}
48    // FIXME: error above doesn't print the type X<int>::X cleanly!
49}
50
51void test_instantiation(X<double>::C *x,
52                        X<float>::D::E *e,
53                        X<float>::D::F *f) {
54  double &dr = x->foo();
55  float &fr = e->bar();
56  f->foo(); // expected-error{{implicit instantiation of undefined member 'X<float>::D::F'}}
57
58}
59
60
61X<void>::C *c3; // okay
62X<void>::D::E *e1; // okay
63X<void>::D::E e2; // expected-note{{in instantiation of member class 'X<void>::D::E' requested here}}
64
65// Redeclarations.
66namespace test1 {
67  template <typename T> struct Registry {
68    struct node;
69    static node *Head;
70    struct node {
71      node(int v) { Head = this; }
72    };
73  };
74  void test() {
75    Registry<int>::node node(0);
76  }
77}
78
79// Redeclarations during explicit instantiations.
80namespace test2 {
81  template <typename T> class A {
82    class Foo;
83    class Foo {
84      int foo();
85    };
86  };
87  template class A<int>;
88
89  template <typename T> class B {
90    class Foo;
91    class Foo {
92    public:
93      typedef int X;
94    };
95    typename Foo::X x;
96  };
97  template class B<int>;
98
99  template <typename T> class C {
100    class Foo;
101  };
102  template <typename T> class C<T>::Foo {
103    int x;
104  };
105  template class C<int>;
106}
107
108namespace AliasTagDef {
109  template<typename T>
110  struct F {
111    using S = struct U {
112#if __cplusplus <= 199711L
113    // expected-warning@-2 {{alias declarations are a C++11 extension}}
114#endif
115      T g() {
116        return T();
117      }
118    };
119  };
120
121  int m = F<int>::S().g();
122  int n = F<int>::U().g();
123}
124
125namespace rdar10397846 {
126  template<int I> struct A
127  {
128    struct B
129    {
130      struct C { C() { int *ptr = I; } };
131#if __cplusplus >= 201103L
132      // expected-error@-2 {{cannot initialize a variable of type 'int *' with an rvalue of type 'int'}}
133#else
134      // expected-warning@-4 {{expression which evaluates to zero treated as a null pointer constant of type 'int *'}}
135#endif
136      // expected-error@-6 {{cannot initialize a variable of type 'int *' with an rvalue of type 'int'}}
137    };
138  };
139
140  template<int N> void foo()
141  {
142    class A<N>::B::C X; // expected-note 2 {{in instantiation of member function}}
143    int A<N+1>::B::C::*member = 0;
144  }
145
146  void bar()
147  {
148    foo<0>(); // expected-note{{in instantiation of function template}}
149    foo<1>(); // expected-note{{in instantiation of function template}}
150  }
151}
152