Anonymous enums are not recognized

[James-Dengel]

Environment

• OS and Version: MacOS Catalina

• VS Code Version:
  Version: 1.72.0 (Universal)
  Commit: 64bbfbf67ada9953918d72e1df2f4d8e537d340e
  Date: 2022-10-04T23:21:58.256Z
  Electron: 19.0.17
  Chromium: 102.0.5005.167
  Node.js: 16.14.2
  V8: 10.2.154.15-electron.0
  OS: Darwin x64 19.6.0
  Sandboxed: No

• C/C++ Extension Version: v1.12.4

Bug Summary and Steps to Reproduce

Using anonymous enums with a size produces a swiggle under the colon for the error:
expected either a definition or a tag name (C/C++ 110)

then a swiggle under the open curly bracket:
expected an identifier (C/C++ 40)

The values of the enum are then unrecognised:
identifier "ZERO" is undefined

typedef enum : uint8_t {
ZERO = 0x00, // zero
ONE = 0x01, // one
TWO = 0x02, // two
FOUR = 0x04, // Four
} NUMBERS;

Configuration and Logs

c_cpp_properties.json;
{
    "configurations": [
        {
            "name": "Mac",
            "includePath": [
                "${workspaceFolder}/**",
                "${workspaceFolder}/src/**"
            ],
            "defines": [],
            "macFrameworkPath": [
                "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk/System/Library/Frameworks"
            ],
            "compilerPath": "/usr/bin/clang",
            "cStandard": "c17",
            "cppStandard": "c++11",
            "intelliSenseMode": "macos-clang-x64",
            "compileCommands": "compile_command.json"
        }
    ],
    "version": 4
}

Other Extensions

No response

Additional context

No response

[browntarik]

Thank you for submitting this issue! We are currently looking into this and will get back to you soon.

[browntarik]

We have filed a bug with the Visual Studio team (1741473) and a fix should be made soon. This GitHub issue will track the progress of the fix.

[James-Dengel]

@browntarik Is there a link for this issue in the Visual Studio Code that I can follow ?

[sean-mcmanus]

@James-Dengel It would be this issue. The 1741473 is the internal issue number. I don't think we know if/when a fix will be made. I think it's a bug with our EDG compiler. I've sent an email/ping about it.

[bobbrow]

In the screenshot I see the icon for "C" language and this is not valid syntax until C23 (though I believe this language feature is not implemented in our parser for C23 yet).

This appears to be more of an issue of the wrong language being used unless C23 is being specified in the compile_commands.json file. Is the error occurring in a header file or a source file? Are you expecting C or C++ for this?

[sean-mcmanus]

@bobbrow Clang and Gcc both implement it as an extension and EDG is supposed to mimic clang/gcc behavior when passed those args.