[Bug c++/71273] New: [6/7 Regression] not declared method in a namespace

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71273

            Bug ID: 71273
           Summary: [6/7 Regression] not declared method in a namespace
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
  Target Milestone: ---

Hello.

GCC 6 and current trunk does not compile following snippet:

namespace Playlists {
class Playlist;
}
namespace Playlist {
class ModelStack {
public:
  static ModelStack instance;
};
}
using namespace Playlists;
void fn1() { ::Playlist::ModelStack::instance; }

$ ~/bin/gcc-6/bin/g++ /tmp/tc.cc
/tmp/tc.cc: In function ‘void fn1()’:
/tmp/tc.cc:11:26: error: ‘Playlists::Playlist::ModelStack’ has not been
declared
 void fn1() { ::Playlist::ModelStack::instance; }

While GCC 5 is OK and clang++ 3.7.0 also.

Thanks,
Martin