[clang] [C23] Fix typeof handling in enum declarations (PR #146394)

[via cfe-commits]

Sirraide wrote:

> ```c++
> typeof(int){} x; // Probably parsed as typeof(int{})
> ```

Actually, I’m not sure what we think this is supposed to be; I haven’t checked.


https://github.com/llvm/llvm-project/pull/146394