--- testsuite-9.3.0/src/JUnitOutputDriver.cpp.nullptr	2016-12-19 14:55:38.000000000 -0800

+++ testsuite-9.3.0/src/JUnitOutputDriver.cpp	2017-02-15 11:19:22.628056889 -0800

@@ -35,7 +35,7 @@ void JUnitOutputDriver::startNewTest(std

         {

             std::stringstream suitename;

             suitename << last_group->modname;

-            if(last_group->mutatee != '\0') suitename << "." << last_group->mutatee;

+            if(last_group->mutatee != nullptr) suitename << "." << last_group->mutatee;

             log(HUMAN, "<testsuite name=\"%s\" errors=\"%d\" skipped=\"%d\" tests=\"%d\" failures=\"%d\">\n",

                 suitename.str().c_str(), group_errors, group_skips, group_tests, group_failures);

             log(HUMAN, group_output.str().c_str());