[Bug c++/59423] New: Misleading warning when 'enum class' base type unresolved: elaborated-type-specifier for a scoped enum must not use the ‘class’ keyword

[gnubugzilla at drewnoakes dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59423

            Bug ID: 59423
           Summary: Misleading warning when 'enum class' base type
                    unresolved: elaborated-type-specifier for a scoped
                    enum must not use the ‘class’ keyword
           Product: gcc
           Version: 4.8.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gnubugzilla at drewnoakes dot com

If the base type of an enum class cannot be resolved, g++ gives a confusing
error message:

> warning: elaborated-type-specifier for a scoped enum must not use the ‘class’ 
> keyword

An example is given and discussed here:
http://stackoverflow.com/q/20459120/24874

enum class FaceDirection : int8
{
  Down,
  Up
};

In this example, I did not have a typedef for int8 in scope. A better error
message would state something similar to: "Unknown type name 'int8'."


g++ (Ubuntu/Linaro 4.8.1-10ubuntu9) 4.8.1 on Ubuntu 13.10, installed from
Ubuntu's repositories. Compiling using -std=c++11.