[Bug c++/36163] Friend declaration confused by namespace/using

[redi at gcc dot gnu dot org]

--- Comment #4 from redi at gcc dot gnu dot org  2009-10-30 12:14 ---
(In reply to comment #2)
 Isn't ::foo the using'd class from name?

No, see 7.3.1.2 [namespace.memdef]/3 - an unqualified friend declaration refers
to a member of the innermost enclosing namespace. Names brought into a
namespace scope by a using directive are not members of a namespace.

 If not, how does one befriend a class
 that comes from a using?

You don't, you need to qualify it with the namespace


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36163

[Bug c++/36163] Friend declaration confused by namespace/using

[redi at gcc dot gnu dot org]

--- Comment #5 from redi at gcc dot gnu dot org  2009-10-30 12:15 ---
(In reply to comment #3)
 I think it is a bug, because the class test is declared at the scope ::

A friend declaration specifies a class that belongs to the innermost enclosing
namespace scope, outer scopes are not considered.

This is not a bug.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36163

[Bug c++/36163] Friend declaration confused by namespace/using

[paolo dot carlini at oracle dot com]

--- Comment #6 from paolo dot carlini at oracle dot com  2009-10-30 12:24 
---
Ok, let's close it as invalid. For the record, Comeau 4.3.10.1 Beta2 also
rejects it.


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paolo dot carlini at oracle dot com changed:

   What|Removed |Added

 Status|UNCONFIRMED |RESOLVED
 Resolution||INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36163

[Bug c++/36163] Friend declaration confused by namespace/using

[mdjones0978-gccbugs at yahoo dot com]

--- Comment #3 from mdjones0978-gccbugs at yahoo dot com  2009-10-30 02:48 
---
I think it is a bug, because the class test is declared at the scope :: (before
the namespace), then used below.  The solution is to explicitly state the fact
it is from ::

#include assert.h

class Test;

namespace Boo {
  class Outer {
friend class Test;  // replace with ::Test to fix
  private:
int _o;
class Inner {
  friend class Test; // replace with ::Test to fix
  int _i;
};
  };
}

class Test {
public:
  void DoTest() {
Boo::Outer::Inner  oi;
assert(oi._i == 3);
  }
};

main(int argc, char *argv[]) {

  Test x;
  x.DoTest();

}


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36163

[Bug c++/36163] Friend declaration confused by namespace/using

[pinskia at gcc dot gnu dot org]

--- Comment #1 from pinskia at gcc dot gnu dot org  2008-05-06 21:31 ---
I don't think this is a bug, the friend class here is really ::foo.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36163

[Bug c++/36163] Friend declaration confused by namespace/using

[igodard at pacbell dot net]

--- Comment #2 from igodard at pacbell dot net  2008-05-06 21:39 ---
Isn't ::foo the using'd class from name? If not, how does one befriend a class
that comes from a using?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36163