File: cxx-using-directive.cpp

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,998,520 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (40 lines) | stat: -rw-r--r-- 1,221 bytes parent folder | download | duplicates (38)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
// RUN: %clang_cc1 -fsyntax-only -verify %s

class A {};

namespace B {
  namespace A {} // expected-note{{namespace '::B::A' defined here}} \
                 // expected-note 2{{namespace 'B::A' defined here}}
  using namespace A ;
}

namespace C {} // expected-note{{namespace 'C' defined here}}

namespace D {
  
  class C {
    
    using namespace B ; // expected-error{{not allowed}}
  };
  
  namespace B {}
  
  using namespace C ;
  using namespace B::A ; // expected-error{{no namespace named 'A' in namespace 'D::B'; did you mean '::B::A'?}}
  using namespace ::B::A ;
  using namespace ::D::F ; // expected-error{{expected namespace name}}
  using namespace ::D::C ; // expected-error{{no namespace named 'C' in namespace 'D'; did you mean simply 'C'?}}
}

using namespace ! ; // expected-error{{expected namespace name}}
using namespace A ; // expected-error{{no namespace named 'A'; did you mean 'B::A'?}}
using namespace ::A // expected-error{{no namespace named 'A' in the global namespace; did you mean 'B::A'?}} \
                    // expected-error{{expected ';' after namespace name}}
                    B ; 

void test_nslookup() {
  int B;
  class C;
  using namespace B;
  using namespace C;
}