[Bug c++/61491] New: An explicit specialization of a member enumeration of a class template is rejected

[Bug c++/61491] New: An explicit specialization of a member enumeration of a class template is rejected

[ville.voutilainen at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61491

            Bug ID: 61491
           Summary: An explicit specialization of a member enumeration of
                    a class template is rejected
           Product: gcc
           Version: 4.10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ville.voutilainen at gmail dot com

#include <iostream>

template <class D> struct Base 
{ 
    enum class E : unsigned; 
    E e; 
    Base(E e) : e(e) {} 
}; 

struct X; 

template<> enum class Base<X>::E : unsigned { a, b }; 

struct X : Base<X> 
{ 
    X() : Base<X>(E::b) {} 
};

int main()
{ 
    X x; 
    std::cout << static_cast<unsigned>(x.e) << std::endl;
}

[ville@localhost ~]$ g++ --std=c++11 -pedantic -o plash plash.cpp 
plash.cpp:12:52: warning: template specialization of ‘enum class Base<X>::E’
not allowed by ISO C++ [-Wpedantic]
 template<> enum class Base<X>::E : unsigned { a, b }; 
                                                    ^
Clang accepts the code.
>From gcc-bugs-return-454063-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jun 12 21:55:44 2014
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From: "davejohansen at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/60731] [4.7/4.8/4.9 Regression] dynamic library not getting reinitialized on multiple calls to dlopen()
Date: Thu, 12 Jun 2014 21:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id`731

--- Comment #11 from Dave Johansen <davejohansen at gmail dot com> ---
Can this please be reopened? It was determined in the glibc bugzilla that this
is a gcc problem because of the incorrect setting of unique flag.

[Bug c++/61491] An explicit specialization of a member enumeration of a class template is rejected

[ville.voutilainen at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61491

--- Comment #1 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
This is part of DR1206:
http://open-std.org/JTC1/SC22/WG21/docs/cwg_defects.html#1206

[Bug c++/61491] An explicit specialization of a member enumeration of a class template is rejected

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61491

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-12-14
     Ever confirmed|0                           |1
      Known to fail|4.10.0                      |5.0

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Looks like we just need to remove the pedwarn.

[Bug c++/61491] An explicit specialization of a member enumeration of a class template is rejected

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61491

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |paolo.carlini at oracle dot com

--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Mine.