[Bug c++/60265] New: [C++11] using-declarator of enumerator fails if fully qualified

[Bug c++/60265] New: [C++11] using-declarator of enumerator fails if fully qualified

[roger.ferrer at bsc dot es]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60265

            Bug ID: 60265
           Summary: [C++11] using-declarator of enumerator fails if fully
                    qualified
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: roger.ferrer at bsc dot es

Hi,

a using-declarator the nested-name of which includes an enumerator-name fails,
as g++ seems to expect only namespace-names at this point.

This seems a specific lookup problem of the using-declarator. Other
qualified-ids, seem to work, as shown in the snippet below.

// -- enum.cc
namespace A
{
    enum E { V };
}

namespace B
{
    void f1()
    {
        int x;
        x = A::E::V; // OK
        x = A::V;    // OK
    }

    void f2()
    {
        using A::V; // OK
        int x;
        x = V;
    }

    void f3()
    {
        using A::E::V; // ERR (but should be OK)
        int x;
        x = V;
    }
}
// -- end of enum.cc

$ ~/soft/gcc-experiment/gcc-install/bin/g++ -std=c++11 --version
g++ (GCC) 4.9.0 20140218 (experimental)

$ g++ -std=c++11 -c enum.cc
enum.cc: In function ‘void B::f3()’:
enum.cc:24:21: error: ‘A::E’ is not a namespace
         using A::E::V; // ERR
                     ^
enum.cc:26:13: error: ‘V’ was not declared in this scope
         x = V;
             ^
enum.cc:26:13: note: suggested alternative:
enum.cc:3:14: note:   ‘V’
     enum E { V };

Kind regards,
>From gcc-bugs-return-444116-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 18 18:21:30 2014
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/60265] [C++11] using-declarator of enumerator fails if fully qualified
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id`265

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |rejects-valid
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-02-18
     Ever confirmed|0                           |1

[Bug c++/60265] [C++11] using-declaration of enumerator fails if fully qualified

[paolo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60265

--- Comment #1 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Wed Jun 11 17:28:14 2014
New Revision: 211479

URL: http://gcc.gnu.org/viewcvs?rev=211479&root=gcc&view=rev
Log:
/cp
2014-06-11  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/60265
    * parser.c (cp_parser_using_declaration): Handle unscoped enums.
    * name-lookup.c (validate_nonmember_using_decl): Adjust error
    message.

/testsuite
2014-06-11  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/60265
    * g++.dg/cpp0x/using-enum-1.C: New.
    * g++.dg/cpp0x/using-enum-2.C: Likewise.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/using-enum-1.C
    trunk/gcc/testsuite/g++.dg/cpp0x/using-enum-2.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/name-lookup.c
    trunk/gcc/cp/parser.c
    trunk/gcc/testsuite/ChangeLog

[Bug c++/60265] [C++11] using-declaration of enumerator fails if fully qualified

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60265

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |4.10.0

--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed for 4.10.0.

[Bug c++/60265] [C++11] using-declaration of enumerator fails if fully qualified

[ppluzhnikov at google dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60265

Paul Pluzhnikov <ppluzhnikov at google dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ppluzhnikov at google dot com

--- Comment #3 from Paul Pluzhnikov <ppluzhnikov at google dot com> ---
Can this be backported to 4_9-branch?

Google ref: b/15617537