Index: clang-tools-extra/trunk/clangd/XRefs.cpp
===================================================================
--- clang-tools-extra/trunk/clangd/XRefs.cpp
+++ clang-tools-extra/trunk/clangd/XRefs.cpp
@@ -1230,6 +1230,8 @@
   RecursionProtectionSet RPSet;
   Optional<TypeHierarchyItem> Result =
       getTypeAncestors(*CXXRD, AST.getASTContext(), RPSet);
+  if (!Result)
+    return Result;
 
   if ((Direction == TypeHierarchyDirection::Children ||
        Direction == TypeHierarchyDirection::Both) &&