[clang] [clang-tools-extra] Associate documentation comments with macro definitions (PR #198452)

[Oliver Hunt via cfe-commits]

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@@ -331,21 +362,37 @@ void ASTContext::addComment(const RawComment &RC) {
   Comments.addComment(RC, LangOpts.CommentOpts, BumpAlloc);
 }
 
-const RawComment *ASTContext::getRawCommentForAnyRedecl(
-                                                const Decl *D,
-                                                const Decl **OriginalDecl) const {
-  if (!D) {
+const RawComment *
+ASTContext::getRawCommentForAnyRedecl(RawCommentLookupKey Key,
+                                      const Decl **OriginalDecl) const {
+  if (Key.isNull()) {
     if (OriginalDecl)
-      OriginalDecl = nullptr;
+      *OriginalDecl = nullptr;
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ojhunt wrote:

Ah, the best \o/ 

https://github.com/llvm/llvm-project/pull/198452