[Bug c++/54537] New: undiagnosed using-declaration conflicting with used function

[Bug c++/54537] New: undiagnosed using-declaration conflicting with used function

[fabien at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54537

             Bug #: 54537
           Summary: undiagnosed using-declaration conflicting with used
                    function
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: fabien@gcc.gnu.org


Noticed while working on DR39, the below is wrongly accepted. A diagnostic is
issued if the function f is not used.

namespace a
{
  void f(int);
}

namespace b
{
  void f(int);
  void g()
  {
    f (3);
  }
  using a::f; // { dg-error "already declared" }
}

I have a patch for it.

[Bug c++/54537] undiagnosed using-declaration conflicting with used function

[fabien at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54537

fabien at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2012-09-09
         AssignedTo|unassigned at gcc dot       |fabien at gcc dot gnu.org
                   |gnu.org                     |
     Ever Confirmed|0                           |1
      Known to fail|                            |4.6.3, 4.8.0

[Bug c++/54537] undiagnosed using-declaration conflicting with used function

[bergner at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54537

Peter Bergner <bergner at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
                URL|                            |http://gcc.gnu.org/ml/gcc-p
                   |                            |atches/2012-11/msg01166.htm
                   |                            |l
                 CC|                            |bergner at gcc dot gnu.org
         Resolution|---                         |FIXED

--- Comment #1 from Peter Bergner <bergner at gcc dot gnu.org> ---
Given the OK by Paolo, I retested the patch from:

    http://gcc.gnu.org/ml/gcc-patches/2012-11/msg01166.html

It needed a small change to the expected error message from using9.C, but
otherwise bootstrapped and regtested with no errors.  Committed to mainline as
revision 201414.

I have also asked about the appropriateness of backporting it to the FSF 4.8
branch.

[Bug c++/54537] undiagnosed using-declaration conflicting with used function

[bergner at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54537

Peter Bergner <bergner at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #2 from Peter Bergner <bergner at gcc dot gnu.org> ---
Fixed in mainline.