diff --git a/clang/include/clang/AST/ParentMap.h b/clang/include/clang/AST/ParentMap.h
index fae9557b217efc8885be5e98ff4c76f5fafba8c9..94890e3feb5c1949991fc044eebb339fa0d507bb 100644
--- a/clang/include/clang/AST/ParentMap.h
+++ b/clang/include/clang/AST/ParentMap.h
@@ -23,7 +23,11 @@ public:
   ParentMap(Stmt* ASTRoot);
   ~ParentMap();
 
-  Stmt* getParent(Stmt*) const;  
+  Stmt* getParent(Stmt*) const;
+
+  const Stmt* getParent(const Stmt* S) const {
+    return getParent(const_cast<Stmt*>(S));
+  }
 
   bool hasParent(Stmt* S) const {
     return getParent(S) != 0;