tests BUGFIX include compatibility code to run in different environments
diff --git a/tests/src/test_xml.c b/tests/src/test_xml.c
index 8758fa8..9e6240e 100644
--- a/tests/src/test_xml.c
+++ b/tests/src/test_xml.c
@@ -16,6 +16,7 @@
 #include "../../src/set.c"
 #include "../../src/xml.c"
 #include "../../src/common.c"
+#include "../../src/compat.c"
 #include "../../src/log.c"
 #include <stdarg.h>
 #include <stddef.h>