X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/1340b2bc2a098a7e87fa45ff31591d32c864dc7a..60be9c406252ada31f35dafcb34d9559e70d6cc2:/src/smpi/include/smpi_datatype.hpp

diff --git a/src/smpi/include/smpi_datatype.hpp b/src/smpi/include/smpi_datatype.hpp
index 9318570fdd..61af1d5a19 100644
--- a/src/smpi/include/smpi_datatype.hpp
+++ b/src/smpi/include/smpi_datatype.hpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2009-2017. The SimGrid Team. All rights reserved.          */
+/* Copyright (c) 2009-2019. The SimGrid Team. All rights reserved.          */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
@@ -8,6 +8,7 @@
 
 #include "smpi_f2c.hpp"
 #include "smpi_keyvals.hpp"
+#include <string>
 
 #define DT_FLAG_DESTROYED     0x0001  /**< user destroyed but some other layers still have a reference */
 #define DT_FLAG_COMMITED      0x0002  /**< ready to be used for a send/recv operation */
@@ -111,7 +112,7 @@ public:
   bool is_valid();
   bool is_basic();
   static const char* encode(MPI_Datatype dt);
-  static MPI_Datatype decode(std::string datatype_id);
+  static MPI_Datatype decode(const std::string& datatype_id);
   bool is_replayable();
   void addflag(int flag);
   int extent(MPI_Aint* lb, MPI_Aint* extent);