1 // RUN: %clang_cc1 -fsyntax-only -verify %s
2 // expected-no-diagnostics
3 
4 // C++0x [basic.lookup.unqual]p14:
5 //   If a variable member of a namespace is defined outside of the
6 //   scope of its namespace then any name used in the definition of
7 //   the variable member (after the declarator-id) is looked up as if
8 //   the definition of the variable member occurred in its namespace.
9 
10 namespace N {
11   struct S {};
12   S i;
13   extern S j;
14   extern S j2;
15 }
16 
17 int i = 2;
18 N::S N::j = i;
19 N::S N::j2(i);
20 
21 // <rdar://problem/13317030>
22 namespace M {
23   class X { };
24   inline X operator-(int, X);
25 
26   template<typename T>
27   class Y { };
28 
29   typedef Y<float> YFloat;
30 
31   namespace yfloat {
32     YFloat operator-(YFloat, YFloat);
33   }
34   using namespace yfloat;
35 }
36 
37 using namespace M;
38 
39 namespace M {
40 
41 class Other {
42   void foo(YFloat a, YFloat b);
43 };
44 
45 }
46 
foo(YFloat a,YFloat b)47 void Other::foo(YFloat a, YFloat b) {
48   YFloat c = a - b;
49 }
50 
51 // <rdar://problem/13540899>
52 namespace Other {
53   void other_foo();
54 }
55 
56 namespace M2 {
57   using namespace Other;
58 
59   extern "C" {
60     namespace MInner {
61       extern "C" {
62         class Bar {
63           void bar();
64         };
65       }
66     }
67   }
68 }
69 
bar()70 void M2::MInner::Bar::bar() {
71   other_foo();
72 }
73