1 files changed, 11 insertions, 5 deletions
diff --git a/clang-tools-extra/clangd/index/Merge.cpp b/clang-tools-extra/clangd/index/Merge.cpp
index 76c5955893e..0c9d0c8d3b1 100644
--- a/clang-tools-extra/clangd/index/Merge.cpp
+++ b/clang-tools-extra/clangd/index/Merge.cpp
@@ -186,11 +186,17 @@ Symbol mergeSymbol(const Symbol &L, const Symbol &R) {
     S.Signature = O.Signature;
   if (S.CompletionSnippetSuffix == "")
     S.CompletionSnippetSuffix = O.CompletionSnippetSuffix;
-  // Don't accept documentation from bare forward declarations, if there is a
-  // definition and it didn't provide one. S is often an undocumented class,
-  // and O is a non-canonical forward decl preceded by an irrelevant comment.
-  if (S.Documentation == "" && !S.Definition)
-    S.Documentation = O.Documentation;
+  if (S.Documentation == "") {
+    // Don't accept documentation from bare forward class declarations, if there
+    // is a definition and it didn't provide one. S is often an undocumented
+    // class, and O is a non-canonical forward decl preceded by an irrelevant
+    // comment.
+    bool IsClass = S.SymInfo.Kind == index::SymbolKind::Class ||
+                   S.SymInfo.Kind == index::SymbolKind::Struct ||
+                   S.SymInfo.Kind == index::SymbolKind::Union;
+    if (!IsClass || !S.Definition)
+      S.Documentation = O.Documentation;
+  }
   if (S.ReturnType == "")
     S.ReturnType = O.ReturnType;
   if (S.Type == "")