Michael137 wrote:

> Nice. Now using a simple test like
> 
> ```
> // test.cpp
> int __clang_vtable;
> ```
> 
> and
> 
> ```
> clang -c test.cpp -Wreserved-identifier
> test.cpp:2:5: warning: identifier '__clang_vtable' is reserved because it 
> starts with '__' [-Wreserved-identifier]
>     2 | int __clang_vtable;
>       |     ^
> 1 warning generated.
> ```
> 
> May be add a simple test case to indicate that now that name is a Clang 
> reserved identifier.

Not sure it's worth writing a test-case for that since it'd just be testing 
whether clang warns on `__` being reserved. For which a bunch of tests already 
presumably exist. Going to merge for now. Let me know if I misunderstood the 
test suggestion and I'll add it retroactively.

https://github.com/llvm/llvm-project/pull/183617
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