[clang] [C23] Accept an _Atomic underlying type (PR #147802)

[Erich Keane via cfe-commits]

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@@ -9364,6 +9364,14 @@ def warn_atomic_implicit_seq_cst : Warning<
   InGroup<DiagGroup<"atomic-implicit-seq-cst">>, DefaultIgnore;
 def err_atomic_unsupported : Error<
   "atomic types are not supported in '%0'">;
+def warn_cv_stripped_in_enum : Warning<
+  "%select{'const' and 'volatile' qualifiers|'const' qualifier|'volatile' "
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erichkeane wrote:

Seems like a perfect time for an `enum_select` :)

https://github.com/llvm/llvm-project/pull/147802