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From: "jlame646 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/114067] New: GCC gives wrong diagnostic in the definition
 of a static data member of same class type
Date: Fri, 23 Feb 2024 04:23:38 +0000
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X-Bugzilla-Version: 14.0
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114067

            Bug ID: 114067
           Summary: GCC gives wrong diagnostic in the definition of a
                    static data member of same class type
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jlame646 at gmail dot com
  Target Milestone: ---

The following program produces wrong diagnostic with gcc and clang:

```
struct A{
    int x;
    static const A a{1};
};
```
GCC says `in-class initialization of static data member 'const A A::a' of
incomplete type`.

While the actual problem is not that `A` is incomplete but that it is not an
integral or enumeration type.=20

Only msvc gives correct diagnostic saying:

```
 error C2864: 'A::a': a static data member with an in-class initializer must
have non-volatile const integral type or be specified as 'inline'
```

So I think gcc should say something similar to msvc instead of saying that =
`A`
being incomplete is the problem.=