X-Macro expansion false error.

Environment

• OS and Version: Debian GNU/Linux 13 Trixie
• VS Code Version: 1.119.0
• C/C++ Extension Version: 1.32.2

Bug Summary and Steps to Reproduce

Bug Summary:
False error with X-Macros.

Steps to reproduce:

1. Create a new C file colors.def for example with this content :

COLOR(RED)
COLOR(GREEN)
COLOR(BLUE)

3. Create another C file like main.c with this content :

enum colors_t {
#define COLOR(NAME) NAME,
#include "colors.def"
#undef COLOR
};

4. See the false error "expected an identifier" but compilation works perfectly.

Expected behavior:
No false error as the macro should expand and complete the enum.

Configuration and Logs

{
    "configurations": [
        {
            "name": "Default",
        }
    ],
    "version": 4
}

Other Extensions

Issue still persist after disabling any other extensions.

Additional context

This is not a fatal error since it is only visual but it is a problem in intellisense that shows up error even if there are not...

Reproduce the diagnostic with the two files named in the report, colors.def and main.c, using the shown X-macro pattern. Trace how IntelliSense parses the included macro expansion and identify why it reports “expected an identifier”; done means the false diagnostic disappears while the example continues to compile successfully.