Index: tests/concurrent/clib.c
===================================================================
--- tests/concurrent/clib.c	(revision df65c0c2be6ff4d5d64f16da465106c77c1a5f82)
+++ tests/concurrent/clib.c	(revision e0c072c3bbbe8115f3120141f3503d077cada4be)
@@ -2,4 +2,5 @@
 #include <stdlib.h>
 #include <clib/cfathread.h>
+#include <bits/defs.hfa>
 
 extern "C" {