[Bug c++/54216] Missing diagnostic for ill-formed anonymous enum declarations

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54216

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

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

--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> 2013-04-10 00:41:06 UTC ---
Hi Jason. I'm working on this and the patch is trivial but I suspect that quite
a few testcases (in the library too) need adjusting. Thus, before I start to do
that, wanted to ask: is it Ok a pedwarn for the first case:

enum {}; //-std=c++98 or -std=c++11

and an hard error for the other two:

enum class {}; //-std=c++11

enum class { x }; //-std=c++11

? Like:

54216.C:1:6: warning: anonymous enumeration may not be empty [-Wpedantic]
 enum {}; //-std=c++98 or -std=c++11
      ^
54216.C:3:12: error: scoped enumeration without a name
 enum class {}; //-std=c++11
            ^
54216.C:5:12: error: scoped enumeration without a name
 enum class { x }; //-std=c++11
            ^