make std::accumulate visible on osx/clang

diff --git a/pdns/test-dnsname_cc.cc b/pdns/test-dnsname_cc.cc
index 7758f28087935e85c21f363125f715403e4a0316..aa506b436490301438c0defd1dccd84395a037cc 100644 (file)
--- a/pdns/test-dnsname_cc.cc
+++ b/pdns/test-dnsname_cc.cc
@@ -2,6 +2,7 @@
 #define BOOST_TEST_NO_MAIN
 #include <boost/test/unit_test.hpp>
 #include <boost/assign/std/map.hpp>
+#include <numeric>
 #include "dnsname.hh"
 #include "misc.hh"
 #include "dnswriter.hh"