https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82299
Bug ID: 82299
Summary: -Wuseless-cast errors on typed enums used in member
data initializers in c++1z
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: matt at godbolt dot org
Target Milestone: ---
The follow code:
```
// compile with -Wuseless-cast -std=c++1z
enum Enum : char { A = 0, B = 1 };
struct S {
Enum e { Enum::A };
};
```
Compiled with `-Wuseless-cast -std=c++1z` yields the following erroneous
warning:
```
5 : <source>:5:20: warning: useless cast to type 'enum class Enum'
[-Wuseless-cast]
Enum e { Enum::A };
^
```
This only happens if the `enum` is typed (e.g. the `char` above), and it's
compiled with std=c++1z.
Seems to have been introduced in GCC 7, still present in trunk.
(see https://godbolt.org/g/ehKEau )
