[Bug c/80868] "Duplicate const" warning emitted in `const typeof(foo) bar;`

[ndesaulniers at google dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80868

--- Comment #4 from Nick Desaulniers <ndesaulniers at google dot com> ---
We can close this bug.  LLVM will match GCC here:
https://reviews.llvm.org/D52248