diff --git a/clang/include/clang/Parse/Parser.h b/clang/include/clang/Parse/Parser.h
index 47f72135c97cff..eb8a851da7e04e 100644
--- a/clang/include/clang/Parse/Parser.h
+++ b/clang/include/clang/Parse/Parser.h
@@ -1355,6 +1355,10 @@ class Parser : public CodeCompletionHandler {
     void ParseLexedAttributes() override;
     void ParseLexedPragmas() override;
 
+    // Delete copy constructor and copy assignment operator.
+    LateParsedClass(const LateParsedClass &) = delete;
+    LateParsedClass &operator=(const LateParsedClass &) = delete;
+
   private:
     Parser *Self;
     ParsingClass *Class;