diff -ur apache-log4cxx-0.10.0.orig/src/test/cpp/xml/domtestcase.cpp apache-log4cxx-0.10.0.gcc6-tests/src/test/cpp/xml/domtestcase.cpp
--- apache-log4cxx-0.10.0.orig/src/test/cpp/xml/domtestcase.cpp	2008-04-01 00:33:13.000000000 +0200
+++ apache-log4cxx-0.10.0.gcc6-tests/src/test/cpp/xml/domtestcase.cpp	2016-12-22 13:24:18.277648230 +0100
@@ -190,12 +190,12 @@
                 DOMConfigurator::configure(LOG4CXX_TEST_STR("input/xml/DOMTestCase3.xml"));
                 LOG4CXX_INFO(logger, "File name is expected to end with a superscript 3");
 #if LOG4CXX_LOGCHAR_IS_UTF8
-                const logchar fname[] = { 0x6F, 0x75, 0x74, 0x70, 0x75, 0x74, 0x2F, 0x64, 0x6F, 0x6D, 0xC2, 0xB3, 0 };
+                const unsigned char fname[] = { 0x6F, 0x75, 0x74, 0x70, 0x75, 0x74, 0x2F, 0x64, 0x6F, 0x6D, 0xC2, 0xB3, 0 };
 #else
-                const logchar fname[] = { 0x6F, 0x75, 0x74, 0x70, 0x75, 0x74, 0x2F, 0x64, 0x6F, 0x6D, 0xB3, 0 };
+                const unsigned char fname[] = { 0x6F, 0x75, 0x74, 0x70, 0x75, 0x74, 0x2F, 0x64, 0x6F, 0x6D, 0xB3, 0 };
 #endif
                 File file;
-                file.setPath(fname);
+                file.setPath((const logchar *)fname);
                 Pool p;
                 bool exists = file.exists(p);
                 LOGUNIT_ASSERT(exists);
@@ -209,12 +209,12 @@
                 DOMConfigurator::configure(LOG4CXX_TEST_STR("input/xml/DOMTestCase4.xml"));
                 LOG4CXX_INFO(logger, "File name is expected to end with an ideographic 4");
 #if LOG4CXX_LOGCHAR_IS_UTF8
-                const logchar fname[] = { 0x6F, 0x75, 0x74, 0x70, 0x75, 0x74, 0x2F, 0x64, 0x6F, 0x6D, 0xE3, 0x86, 0x95, 0 };
+                const unsigned char fname[] = { 0x6F, 0x75, 0x74, 0x70, 0x75, 0x74, 0x2F, 0x64, 0x6F, 0x6D, 0xE3, 0x86, 0x95, 0 };
 #else
-                const logchar fname[] = { 0x6F, 0x75, 0x74, 0x70, 0x75, 0x74, 0x2F, 0x64, 0x6F, 0x6D, 0x3195, 0 };
+                const unsigned char fname[] = { 0x6F, 0x75, 0x74, 0x70, 0x75, 0x74, 0x2F, 0x64, 0x6F, 0x6D, 0x3195, 0 };
 #endif
                 File file;
-                file.setPath(fname);
+                file.setPath((const logchar *)fname);
                 Pool p;
                 bool exists = file.exists(p);
                 LOGUNIT_ASSERT(exists);