From 59a35b75e10f1de98baa18be2108b35049075ab3 Mon Sep 17 00:00:00 2001
From: Luca Heltai <luca.heltai@sissa.it>
Date: Tue, 20 Nov 2018 16:41:32 +0100
Subject: [PATCH] Removed use of clone().

---
 source/base/function_parser.cc | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/source/base/function_parser.cc b/source/base/function_parser.cc
index f1c30add30..a4446325bf 100644
--- a/source/base/function_parser.cc
+++ b/source/base/function_parser.cc
@@ -74,13 +74,12 @@ FunctionParser<dim>::FunctionParser(const std::string &expression,
 {
   auto constants_map = Patterns::Tools::Convert<ConstMap>::to_value(
     constants,
-    Patterns::Map(Patterns::Anything(),
-                  Patterns::Double(),
-                  0,
-                  Patterns::Map::max_int_value,
-                  ",",
-                  "=")
-      .clone());
+    std_cxx14::make_unique<Patterns::Map>(Patterns::Anything(),
+                                          Patterns::Double(),
+                                          0,
+                                          Patterns::Map::max_int_value,
+                                          ",",
+                                          "="));
   initialize(variable_names,
              expression,
              constants_map,
-- 
2.39.5