Index: include/clang/AST/DeclBase.h
===================================================================
--- include/clang/AST/DeclBase.h
+++ include/clang/AST/DeclBase.h
@@ -386,6 +386,11 @@
     if (StatisticsEnabled) add(DK);
   }
 
+  Decl(const Decl &) = delete;
+  Decl(Decl &&) = delete;
+  Decl &operator=(const Decl &) = delete;
+  Decl &operator=(Decl &&) = delete;
+
   virtual ~Decl();
 
   /// Update a potentially out-of-date declaration.
Index: include/clang/AST/Stmt.h
===================================================================
--- include/clang/AST/Stmt.h
+++ include/clang/AST/Stmt.h
@@ -1042,6 +1042,11 @@
     return static_cast<StmtClass>(StmtBits.sClass);
   }
 
+  Stmt(const Stmt &) = delete;
+  Stmt(Stmt &&) = delete;
+  Stmt &operator=(const Stmt &) = delete;
+  Stmt &operator=(Stmt &&) = delete;
+
   const char *getStmtClassName() const;
 
   bool isOMPStructuredBlock() const { return StmtBits.IsOMPStructuredBlock; }
Index: include/clang/AST/Type.h
===================================================================
--- include/clang/AST/Type.h
+++ include/clang/AST/Type.h
@@ -1813,7 +1813,9 @@
   friend class ASTWriter;
 
   Type(const Type &) = delete;
+  Type(Type &&) = delete;
   Type &operator=(const Type &) = delete;
+  Type &operator=(Type &&) = delete;
 
   TypeClass getTypeClass() const { return static_cast<TypeClass>(TypeBits.TC); }