Constify xbt::string::to_string_data.

[simgrid.git] / include / xbt / string.hpp

diff --git a/include/xbt/string.hpp b/include/xbt/string.hpp
index 83e2820..87ea383 100644 (file)
--- a/include/xbt/string.hpp
+++ b/include/xbt/string.hpp
@@ -174,7 +174,7 @@ public:
     return data()[i];
   }
   // Conversion
-  static string_data& to_string_data(string& s) { return s.str; }
+  static const string_data& to_string_data(const string& s) { return s.str; }
   operator std::string() const { return std::string(this->c_str(), this->size()); }
 
   // Iterators