1// RUN: %clang_cc1 -fsyntax-only -verify %s
2
3namespace N { struct X { }; };
4
5namespace A = N;
6
7int B; // expected-note {{previous definition is here}}
8namespace B = N; // expected-error {{redefinition of 'B' as different kind of symbol}}
9
10namespace C { } // expected-note {{previous definition is here}}
11namespace C = N; // expected-error {{redefinition of 'C'}}
12
13int i;
14namespace D =
15i; // expected-error {{expected namespace name}}
16
17namespace E1 = N::
18Foo; // expected-error {{expected namespace name}}
19namespace E2 = N::
20X; // expected-error {{expected namespace name}}
21
22namespace F {
23  namespace A { namespace B { } } // expected-note {{candidate found by name lookup is 'F::A::B'}}
24  namespace B { } // expected-note {{candidate found by name lookup is 'F::B'}}
25  using namespace A;
26  namespace D = B; // expected-error {{reference to 'B' is ambiguous}}
27}
28
29namespace G {
30  namespace B = N;
31}
32
33namespace H {
34  namespace A1 { }
35  namespace A2 { }
36
37  // These all point to A1.
38  namespace B = A1; // expected-note {{previous definition is here}}
39  namespace B = A1;
40  namespace C = B;
41  namespace B = C;
42
43  namespace B = A2; // expected-error {{redefinition of 'B' as different kind of symbol}}
44}
45
46namespace I {
47  namespace A1 { int i; }
48
49  namespace A2 = A1;
50}
51
52int f() {
53  return I::A2::i;
54}
55
56namespace J {
57  namespace A {
58    namespace B { void func (); }
59  }
60
61  namespace C = A;
62
63  using namespace C::B;
64
65  void g() {
66    func();
67  }
68}
69
70namespace K {
71  namespace KA { void func(); }
72
73  void f() {
74    namespace KB = KA;
75    KB::func();
76  }
77
78  template <class T> void g() {
79    namespace KC = KA;
80    KC::func();
81  }
82  template void g<int>();
83  template void g<long>();
84
85  void h() {
86    KB::func(); // expected-error {{undeclared identifier 'KB'}}
87    KC::func(); // expected-error {{undeclared identifier 'KC'}}
88  }
89}
90
91namespace {
92  class C1;
93}
94namespace {
95  class C1;
96}
97C1 *pc1 = 0;
98
99namespace N {
100  namespace {
101    class C2;
102  }
103}
104namespace N {
105  namespace {
106    class C2;
107  }
108}
109N::C2 *pc2 = 0;
110
111// PR6341
112namespace A = N;
113namespace N { }
114namespace A = N;
115
116A::X nx;
117
118namespace PR7014 {
119  namespace X
120  {
121    namespace Y {}
122  }
123
124  using namespace X;
125
126  namespace Y = X::Y;
127}
128