fix compilation with gcc6.3

diff --git a/src/MEDLoader/MEDFileBlowStrEltUp.cxx b/src/MEDLoader/MEDFileBlowStrEltUp.cxx
index 9601a4a5c7f264f534d70997c2d28d3f60bf2779..a502625d635243f613a9019a158cda628354285a 100644 (file)
--- a/src/MEDLoader/MEDFileBlowStrEltUp.cxx
+++ b/src/MEDLoader/MEDFileBlowStrEltUp.cxx
@@ -23,6 +23,7 @@
 #include "MEDFileFieldVisitor.hxx"
 #include "MEDCouplingPartDefinition.hxx"
 #include "MCAuto.txx"
+#include <numeric>
 
 using namespace MEDCoupling;