Removed use of clone().

diff --git a/source/base/function_parser.cc b/source/base/function_parser.cc
index f1c30add30df5feddd03a6398f23bedcc2812929..a4446325bf5687b599f10127fccf8cbb92ab1715 100644 (file)
--- 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,