Index: uspace/lib/c/include/macros.h
===================================================================
--- uspace/lib/c/include/macros.h	(revision 03362fbdd97fb8df65b78ada498e07140aaa9080)
+++ uspace/lib/c/include/macros.h	(revision faf83cf9ad0f66d170fa21d6bd2f1a5ba5abe52d)
@@ -40,4 +40,5 @@
 #define abs(a)     ((a) >= 0 ? (a) : (-a))
 
+#define ARRAY_SIZE(array)   (sizeof(array) / sizeof(array[0]))
 
 #define KiB2SIZE(kb)  ((kb) << 10)