1// RUN: cp %s %t
2// RUN: %clang_cc1 -fsyntax-only -verify %s
3// RUN: not %clang_cc1 -x c++ -fixit %t -Werror -DFIXIT
4// RUN: %clang_cc1 -x c++ %t -DFIXIT
5// RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++1z -Wc++14-compat
6
7namespace foo1::foo2::foo3 {
8#if __cplusplus <= 201400L
9// expected-warning@-2 {{nested namespace definition is a C++1z extension; define each namespace separately}}
10#else
11// expected-warning@-4 {{nested namespace definition is incompatible with C++ standards before C++1z}}
12#endif
13  int foo(int x) { return x; }
14}
15
16#ifndef FIXIT
17inline namespace goo::bar { // expected-error {{nested namespace definition cannot be 'inline'}} expected-warning 0-1{{C++11 feature}}
18  int n;
19}
20
21int m = goo::bar::n;
22#endif
23
24int foo(int x) {
25  return foo1::foo2::foo3::foo(x);
26}
27
28namespace bar1 {
29  namespace bar2 {
30    namespace bar3 {
31      int bar(int x) { return x; }
32    }
33  }
34}
35
36int bar(int x) {
37  return bar1::bar2::bar3::bar(x);
38}
39