Index: libcfa/src/bits/debug.hfa
===================================================================
--- libcfa/src/bits/debug.hfa	(revision 4069faade93e68df42b8c7af24253b6a041b469b)
+++ libcfa/src/bits/debug.hfa	(revision 1268ad8ea58487a8428bbedb6801b68c2ddd7c85)
@@ -107,4 +107,9 @@
 #	define __CFADBG_PRINT_GROUP_io(...) ((void)0)
 #endif
+#if defined(__CFA_DEBUG_PRINT__) || defined(__CFA_DEBUG_PRINT_IO__) || defined(__CFA_DEBUG_PRINT_IO_CORE__)
+#	define __CFADBG_PRINT_GROUP_io_core(...) __VA_ARGS__
+#else
+#	define __CFADBG_PRINT_GROUP_io_core(...) ((void)0)
+#endif
 #if defined(__CFA_DEBUG_PRINT__) || defined(__CFA_DEBUG_PRINT_MONITOR__)
 #	define __CFADBG_PRINT_GROUP_monitor(...) __VA_ARGS__