Index: uspace/lib/c/include/macros.h
===================================================================
--- uspace/lib/c/include/macros.h	(revision 623bab8f043f0e60c5e6d04af58ed83d9338327b)
+++ uspace/lib/c/include/macros.h	(revision 0c96e6cbb2dc59f725618a8977250a3aa50919ad)
@@ -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)