Index: include/clang/Tooling/Refactoring/Rename/RenamingAction.h
===================================================================
--- include/clang/Tooling/Refactoring/Rename/RenamingAction.h
+++ include/clang/Tooling/Refactoring/Rename/RenamingAction.h
@@ -76,7 +76,7 @@
 
 private:
   QualifiedRenameRule(const NamedDecl *ND,
-                      std::string NewQualifiedName)
+                      const std::string &NewQualifiedName)
       : ND(ND), NewQualifiedName(std::move(NewQualifiedName)) {}
 
   Expected<AtomicChanges>