[clang] [C23] More improved type compatibility for enumerations (PR #150946)

[via cfe-commits]

================
@@ -511,6 +511,14 @@ def note_odr_number_of_bases : Note<
   "class has %0 base %plural{1:class|:classes}0">;
 def note_odr_enumerator : Note<"enumerator %0 with value %1 here">;
 def note_odr_missing_enumerator : Note<"no corresponding enumerator here">;
+def note_odr_incompatible_fixed_underlying_type : Note<
----------------
Sirraide wrote:

This note appears unused

https://github.com/llvm/llvm-project/pull/150946