[clang] [APINotes] Diagnose invalid Where.Parameters selectors (PR #209408)

[John Hui via cfe-commits]

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@@ -1072,6 +1073,69 @@ getAPINotesParameterSelectorCandidates(const Sema &S, const FunctionDecl *FD) {
   return Candidates;
 }
 
+static api_notes::APINotesFunctionSelectorKey
+getBroadAPINotesSelectorKey(api_notes::APINotesFunctionSelectorKey Key) {
+  Key.ParameterTypeIDs = std::nullopt;
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j-hui wrote:

Sorry if I've missed something from elsewhere, but why does this field need to be set here?

https://github.com/llvm/llvm-project/pull/209408