[Bug c++/23967] New: misleading error message for ambiguous namespace reference

["jens dot maurer at gmx dot net" <gcc-bugzilla at gcc dot gnu dot org>]

The namespace reference in the code below is ambiguous.  gcc 4.0.1 shows the
misleading error message

tst.cc: In function 'int main()':
tst.cc:16: error: 'N' has not been declared
tst.cc:16: error: 'f' was not declared in this scope


namespace N {
  void f();
}

namespace A {
  namespace N {
    void f();
  }
}

using namespace A;

int main()
{
  N::f();
}

-- 
           Summary: misleading error message for ambiguous namespace
                    reference
           Product: gcc
           Version: 4.0.1
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jens dot maurer at gmx dot net
                CC: Jens dot Maurer at is-teledata dot com,gcc-bugs at gcc
                    dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23967