diff --git a/clang/lib/Sema/TypeLocBuilder.h b/clang/lib/Sema/TypeLocBuilder.h
--- a/clang/lib/Sema/TypeLocBuilder.h
+++ b/clang/lib/Sema/TypeLocBuilder.h
@@ -53,6 +53,9 @@
       delete[] Buffer;
   }
 
+  TypeLocBuilder(const TypeLocBuilder &) = delete;
+  TypeLocBuilder &operator=(const TypeLocBuilder &) = delete;
+
   /// Ensures that this buffer has at least as much capacity as described.
   void reserve(size_t Requested) {
     if (Requested > Capacity)