[Bug c++/53368] New: [4.7/4.8 regression] c++11 reject-valid-code

[Bug c++/53368] New: [4.7/4.8 regression] c++11 reject-valid-code

[ppluzhnikov at google dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53368

             Bug #: 53368
           Summary: [4.7/4.8 regression] c++11 reject-valid-code
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ppluzhnikov@google.com


We've noticed this using 4.7 branch, confirmed exists in current trunk,
does not appear to exist in 4.6.

/// --- cut ---
// g++ -c -std=c++11 t.cc
// Fails: g++ (GCC) 4.8.0 20120515 (experimental)

class Message;  // comment out -> works

namespace proto {
struct Message {
  virtual void Copy(const Message&);
};
}

struct MessageSet: public proto::Message {
  // using Message::Copy;  // this works
  using proto::Message::Copy;
};
/// --- cut ---


$ g++ -c t.cc
$ g++ -c t.cc -std=c++11
t.cc:15:25: error: type 'Message' is not a base type for type 'MessageSet'
   using proto::Message::Copy;
                         ^

[Bug c++/53368] [4.7/4.8 regression] c++11 reject-valid-code

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53368

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |fabien at gcc dot gnu.org

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-05-16 02:14:20 UTC ---
are you sure this isn't just another dup of PR 52841 ?

[Bug c++/53368] [4.7/4.8 regression] c++11 reject-valid-code

[ppluzhnikov at google dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53368

Paul Pluzhnikov <ppluzhnikov at google dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |DUPLICATE

--- Comment #2 from Paul Pluzhnikov <ppluzhnikov at google dot com> 2012-05-16 03:09:56 UTC ---
Yes, looks like a dup of 52841.

*** This bug has been marked as a duplicate of bug 52841 ***

[Bug c++/53368] [4.7/4.8 regression] c++11 reject-valid-code

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53368

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2012-05-16 03:19:27 UTC ---
This is triggered by revision 181118:

http://gcc.gnu.org/ml/gcc-cvs/2011-11/msg00406.html