bug in typeof or wrong enum specs?

[Rainer Schuetze]

On 29.08.2013 01:28, captaindet wrote:
> a recent discussion (
> http://forum.dlang.org/thread/kvje4r$1tff$1@digitalmars.com ) about the
> official enum dox ( http://dlang.org/enum.html ) was not conclusive whether
>
>      enum IDENTIFIER;
>
> is officially allowed/supported. jacob pointed out that it has an
> important use case in that it can serve as UDA. as UDAs are fairly new,
> this cannot be the reason why this syntax was allowed in the first place
> though, *if* it is allowed. also, it might be used in meta stuff similar
> to "#define IDENTIFIER" in C - playing with this idea i run into this
> issue...

enum IDENTIFIER;

was used to help resolving forward references to type IDENTIFIER when 
the resolving of forward references was a lot less capable than it is 
now. I don't think it is still needed for that. The same syntax exists 
for struct or class.

Please also note that using it as in C/C++ to declare a type that is 
actually defined in another module does not work. The type is bound to 
the current module and the definition has to be in that module.